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Survey and Investigation
Current Status

As on Janauary-2017




Tehri Dam & HPP (1000 MW) comprises a 260.5 M high Earth & Rockfill dam which is one of the highest dams of its type in the world, a Spillway System designed for PMF of 15540 cumecs and a drop of 220m, having one Chute Spillway and four Shaft Spillways and an underground Power House housing four Turbine/ Generator sets of 250 MW each, designed to operate with a head variation of 90 m.


Project was commissioned in 2006-07 and all four machines of Tehri HPP are under commercial operation. Besides providing much needed power to the Northern Grid, the command area is availing irrigation benefits from the Project and drinking water is being supplied to Delhi and UP.




All four units (Unit-IV, Unit-III, Unit-II & Unit-I) were synchronized with the Northern Grid in July’ 06, Oct’06, Jan’07 & Mar’07 and are in commercial operation w.e.f. 22nd Sep’06,  9th Nov’06, 30th March’07 & 9th July’ 07 respectively.




    Details of generation from Tehri HPP for the previous years are as under:





    Target (MU)

    Achievement (MU)





























































Details of generation from Tehri HPP for the current F.Y. 2016-17 are as under:



Quarter/ Month


    Target (MU)

    Achievement (MU)



















(F.Y. 2016-17 target 2964.82MU)






Approved Completion cost of the project is ` 8392.45 Cr. Including IDC plus contingent liabilities on account of arbitration award/ court cases etc, as per actual but not exceeding  ` 967.38 Cr.



The tariff for the period 2006-09 had been approved by Hon’ble Central Electricity Regulatory Commission (CERC) on 16.04.13. THDCIL had filed a review petition on 29.05.14. Hon’ble CERC  has revised upward the AFCs by `19.59 Cr.  For the period 2006-09 vide order dated 05.06.14. The tariff for the period 2009-14 has been issued by Hon’ble CERC on 27.01.15.  










Koteshwar Hydro-Electric Plant (400 MW), located 22 km downstream of Tehri, is an integral part of Tehri Power Complex comprising of Tehri Dam & HPP (1000 MW), Tehri PSP (1000MW) and Koteshwar HEP (400MW) to develop Hydro-electric potential of river Bhagirathi. It facilitate the functioning of Tehri Power Complex as a major peaking station in Northern grid as reservoir created by Koteshwar Dam having a live storage capacity of 35.0 MCM function as lower (balancing) reservoir for Tehri PSP. This plant is also regulating water releases from Tehri reservoir for irrigation purpose.



Govt. of India approved the implementation of Koteshwar Hydro Electric Project (4X100 MW) in April’2000 at a cost of ` 1301.56 Cr including IDC of ` 190.04 Cr at Oct.’99 price level. PIB considered the RCE-1 proposal in its meeting held on 02.06.2016. PIB has recommended the proposal of Revised Cost Estimate (RCE-1) at an estimated completion cost of Rs. 2717.35 Cr. for the approval of CCEA.



All four units (Unit-I, Unit-II, Unit-III & Unit-IV) were synchronized with the Northern Grid in March’11, March’11, Jan’12 & Mar’12 respectively and are in commercial operation w.e.f. 1st Apr’11, 26th Oct’11, 13th Feb’12 & 1st Apr’ 12 respectively.




Details of generation from Koteshwar HEP are as under:






Target (MU)

Achievement (MU)




























Details of generation from Koteshwar HEP  for the current F.Y. 2016-17 are as under:

















    Target (MU)

    Achievement (MU)



















(F.Y. 2016-17 target 1224.30MU)







·         Excavation of Access Adit  parallel to diversion tunnel from EL 635.0 M is completed in its entire length of 60 m. Further, work of concrete sluicing and drilling of 300 mm dia bore hole is in progress.

·         After saturation of all 38 nos. large dia bore hole at El 620 M, grouting of temporary plug is under progress through 27 nos holes, grouting through one number hole is completed up to total height of diversion tunnel .

·         Total 80 nos. 300 mm dia holes are to be drilled at EL 635 m platform and in Access Tunnel constructed. Through these holes, under water concrete is to be sluiced in side Diversion Tunnel. Out of total 80 holes, drilling of 62 holes has already been completed and  concrete has already been sluiced through 38 holes. Further drilling of 01 nos bore holes is in progress in parallel to the concrete sluicing.



·         Drilling of drainage holes from Dam galleries at EL 576.50, 546.00 and 523.00 m has been completed.( Total-75 no. holes)

·         Finishing of Dam gallery walls at EL 576.50 M with 6 mm thick cement plaster has been completed in entire 330 m length.  Further, plastering works at EL 546.00 m gallery is completed in about 300 m out of total about 400 m length, balance is in  progress.



·        Drilling of drainage holes in Main Access Tunnel of Power House has been completed. Further, cleaning of surface, fixing drain outlet device and perforated PVC pipes in already drilled drainage holes and placing of chain link fabric in crown portion is completed in about 300 m length out of total 370 m. Preparation for wet shotcrete above SPL is in progress.

·         Architectural works for face uplift at MAT Portal is completed up to full height i.e. EL 596.00 m. Arrangements for painting is in process.


·         Floor finishing with Kota stone in the area of extended service bay and mechanical work shop has been completed. 

·         About 60% work of false ceiling in Machine hall has been completed further work is in progress. Part Material for wall cladding has reached site. Drawing for base structure is to be revised which is in process.



Ø  For slope stabilization above the area of diversion tunnel outlet, construction of concrete cladding wall in about 85 M at EL 585.00 m and 40 m at EL 620.00 m has been completed. Excavation from EL 700 to EL 673.00 in the area of sink hole has been completed, further work between EL 673.00 to 670.00 m is in progress.

·         Slope stabilization with shotcrete at EL 685.0 m berm is in progress.

·         For the stabilization of left bank between stilling basin and Bailey bridge, construction of retaining wall in entire 190 M length has been completed. 

·         For the stabilization of left bank from Diversion tunnel outlet to new location of bridge, cladding wall in about 160 m length has already been completed. Construction of road for left abutment of new steel girder bridge is completed in entire length of about 125 m. 



·         Berm at EL 618.0 m is stabilized from Dam Axis to D/s Ch 200.00 m. Shotcrete and Chain link fabric has been completed between Dam Axis to D/s 110 m (From EL 590.0m to EL ± 645.0m. Further application of Shotcrete and Chain link fabric in between EL 590.0 to 570.00 M is in progress.



·         Scheme for installation of double twisted rock falling net has been issued to contractor, material procurement is in process.



·         Formation of Approach in total length of about 750.0 m has been completed. 

 Placement of boulder filled gabion walls is in progress and has been completed     in average height of 6.50 m.



·         Concrete placement for the construction of right abutment of steel girder bridge at new location is completed.

·         Excavation for construction of left abutment is completed.  Concreting for first lift, mat concrete has also been completed, further works are in  progress.



Expenditure incurred by the corporation on Koteshwar Hydro Electric Project till  Jan-17 is ` 2836.86 Cr. This is including IDC & FC of ` 383.88 Cr.



During Jan-17, an expenditure of ` 5.19 Cr. has been incurred on Koteshwar HEP against budget estimate of ` 4.22 Cr.



The tariff is being charged provisionally now as per Hon’ble CERC’s order dated 15.05.14. Hon’ble CERC has considered 85% of Capital Cost as on COD of the station while determining AFC for the period 2011-14.





The wind power project of THDC India Limited at Patan Wind farm, Distt. Patan, Gujarat having an installed capacity of 50 MW comprises of  25 nos. Wind Turbine Generators (WTGs), each of  2 MW capacity. These 25 WTGs, installed in four villages namely Amrapur, Ved, Vahedpura and Anwarpura of distt. Patan, Gujarat are approximately 200 kms. from Ahmadabad and 120 kms. from Mehsana. The main characteristics of the turbines are:


·         Model / Name : Gamesa G 97 – 2000 kW

·         Rotor diameter : 97 M

·         Hub Height : 90 M



The Project got commissioned on 29th June 2016, ahead of the schedule. By commissioning of 50 MW Wind Power Project, THDC has added 50 MW renewable energy to the grid.


The expected Annual generation from the project is 110 MU with 25.14 % capacity factor. The Power Purchase Agreement (PPA) for the project has been signed with Gujarat Urja Vikas Nigam Limited (GUVNL) at a fixed tariff of ` 4.15 / unit for 25 years of life of the project.


The project has been registered with IREDA for availing of Generation Based Incentive (GBI) @ Rs 0.50 / kWh with a cap of Rs 1 Crore per MW. The project will  receive a total GBI of Rs. 50 Cr under this scheme of MNRE.


The details of generation from Patan Wind Power Project for the current financial year 2016-17 are as under:


Sl. No


Generation (in MU)


June’ 16



July’ 16 to September’ 16



Oct’16 to Dec’16






Total Generation till date






(Under construction)


1.0       BACKGROUND

Tehri PSP comprising of four reversible pump turbine units of 250 MW each involves construction of an Underground Machine Hall on the left bank of river Bhagirathi.  The main feature of the Project is the large variation of about 90 m between the maximum and minimum head, under which the reversible units shall operate. The operation of Tehri PSP is based on the concept of recycling of water discharged between upper reservoir and lower reservoir. The Tehri Dam reservoir shall function as the upper reservoir and Koteshwar reservoir as the lower balancing reservoir.


On completion, additional generating capacity of 1000 MW, peaking power will be added to the Northern Region (annual generation of 1321.82 million units). For pumping operation of reversible units during off-peak hours, the energy requirement will be of the order of 1651.66 MU limited to maximum of 1000 MW during off-peak hours. With the construction of Tehri PSP, Tehri Hydro Power Complex shall function as a major peaking station having an installed capacity of 2400 MW.



Govt. of India approved the execution of Pumped Storage Plant (4X250 MW) in  July-2006, at a cost of ` 1657.60 Cr including IDC of ` 81.64 cr. at Dec.’ 05 price level with debt equity ratio of 70:30.



CCEA has approved Revised Cost Estimate (RCE) of the Project amounting to ` 2978.86 Cr. including IDC of ` 405.04 Cr. at Apr-10 PL in Nov’11. RCE at Oct-15 PL (along with the proposal of Time and Cost overrun) of ` 3871.44 Cr (including IDC & FC of ` 518.06 Cr.) has been submitted to MoP vide letter dated 14.09.2016 for approval. Above RCE with the completion date 30th Sep-2019 has also been approved by Board on 28.11.16 in 183rd Board meeting.                                              



          Layout of Tehri PSP Project is enclosed at Exhibit - I 

3.1       Works already executed before award of EPC contract

Essential works of Tehri PSP already completed along with the execution of Tehri Stage-I & before award of EPC contract are as follows:

·         Two Headrace Tunnels for PSP

·         Intakes for Headrace Tunnels of PSP                                                          

·         Transformer Hall constructed under Tehri Stage-I has been planned to accommodate Generator Transformers for the PSP also.

·         Main Cable Gallery 

·         Interface Facility (Civil works)

·         The protection wall in front of TRT outlet up to level of   El. 622.0 M.

·         Excavation of various Adits leading to Machine Hall, Down Stream Surge Shaft and link shafts to isolate approach of Tehri HPP from PSP works.



·         Major works of the Project are being executed through a single EPC contract. Agreement for EPC/Turnkey execution of the Project was signed with the consortium of M/S Alstom Hydro France and Hindustan Construction Company and Work on the project has commenced w.e.f. 27th Jul-11 with a contractual completion time of 54 months. 




5.1 Construction of Approach Adits & Drainage Galleries:

·         Design & Drawings of all access Adits and Drainage Galleries have been issued.

·         14 Access Adits to different structures (total 2146 RM) have been completed.

·         Major portion of Drainage Galleries of different structures (total 1709 RM) have been completed.


 5.2 Upstream Surge Shafts (3 & 4):-

·         Design & drawings for General arrangement, Plan, L-section, Excavation & Support of Upstream Surge top chambers and shaft along with Grouting Galleries & instrumentation & monitoring details have been issued. Grouting details of existing HRTs have also been issued. Collar beam concrete and reinforcement details have been issued.

·         Excavation of Pilot shafts in Upstream Surge Shaft (HRT-4 & HRT- 3) (total length 280RM) has been completed.

·         Three Grouting cum Drainage Galleries around Upper Chambers of U/s Surge Shaft-3 &4, (Total length 327 RM) have been completed.

·         Excavation of Top Chamber of U/s Surge Shaft-3 & 4 has been completed (Total Qty 8350 cum each).

·         After completion of excavation of Top Chamber of U/s Surge Shaft- 3 & 4, work of collar beam in U/s Surge Shaft- 3 & 4 has also been completed further, widening is under progress.


5.3 Butterfly Valve Chamber (BVC):

·        Design & drawings upto 2nd bench including extensive support measures (cable anchors), and instrumentation details have been issued.

·        Excavation and Stabilisation of Drainage Gallery U/s of BVC total length 156 RM has also been completed.

·        Excavation of 4th bench is  under progress. Cumulative benching excavation is 4716 cum (29.35%). While stabilization work i.e. cable anchor and rock bolting etc. in 3rd bench are also under progress.

 5.4 Penstock Assembly Chamber (PAC):

·         Design & drawings for Excavation & Support including Instrumentation and Monitoring of Crown slashing have been issued.

·         Crown slashing of Penstock Assembly Chamber (PAC) has been completed. Installation of rock bolts in crown of PAC as additional support measures and  Installation of MPBX instruments to monitor rock behaviour during Benching in BVC (Structure adjacent to PAC) has also been completed. Benching in PAC will start after excavation of four benches in BVC.


 5.5 Penstocks:

·         Design & drawings for Excavation & Support including Instrumentation and Monitoring of Lower Penstock chamber, Lower Horizontal Penstocks, Lower penstock Bend, Lower horizontal Penstock Unit-8 junction with Power House Cavern, Upper Horizontal Penstock between PAC and BVC have been issued.  Lower Penstock backfill concreting and grouting have been issued. 

·         Excavation of Lower Penstock Chamber has already been completed.

·         Excavation of all four Lower Horizontal Penstocks has been completed.

·         Excavation of all four Pilot shafts of Vertical penstock (135 m each) has been completed.

·         For ferrules erection, mud mat in Penstock-6 & 7 at downstream of Lower PAC has been completed.



5.6 Bus bar Chamber and Galleries:

·         Design & drawings for Excavation & Support of Bus Bar Chamber, Busbar Tunnels-End wall, upper horizontal galleries, Bus bar Shaft, Lower Bus Bar Tunnel including Instrumentation & Monitoring and support system and Lower Bus Bar-Transition portion have been issued. Support arrangement for Bus bar tunnel over existing Adit 3A has been issued. Reinforcement & lining, grouting detail & drainage details of Busbar Cavern & Lower Bus Bar and Excavation & support of Bus Bar Tunnel-5 junction with Transformer Cavern have been issued. 

·         Excavation of Bus bar chamber has been completed (Total length 92 m).

·         Excavation in Upper Bus bar Galleries no- 6, 7 & 8 have been completed (Total length 102.50 RM,113.10 RM & 103.70RM respectively).

·         Due to cracks observed in bus bar-5 (upper horizontal) the progress is slow for safety reasons. As advised by Design Deptt., for strengthening, backfill concrete in underneath Adit 3-A has been completed. BBG-5: 61.5 RM completed out of 87.4 RM.

·         Excavation of Busbar Vertical Shaft- 5, 6, 7 and 8 (12 m each) is nearing to complete.

·         Excavation of all four lower Bus bar Galleries (225.7 RM) has been completed.

·         For concreting in Upper Bus Bar-8, erection of gantry is nearing completion.



5.7 Machine Hall:-

·         Following design & drawings for current/ further works have been issued :

Excavation & Support including instrumentation & monitoring for VSI Transformer Niche, Benching of Machine hall & Control room Area upto El 567 M (Penstock floor level). Concrete & reinforcement structure for service bay and Cable Anchors details in u/s wall of Machine hall in Unit area.

·         After completion of concreting in service bat raft, HVAC & Cable Gallery raising of Columns upto Crane Beam is in progress. All 14 columns have been raised up to EOT crane level in Service Bay area.

·         Excavation of upper Drainage gallery (total 468 RM) and lower Drainage gallery (total 533 RM) of Machine hall have been completed.

·         Eexcavation in Control room area has been completed upto desired level (EL 567m).

·         In Unit area, benching up to EL 568m i.e. Penstock Floor Level has been completed during the month. Further benching is in progress.

·         For strengthening, work of cable anchors in between EL 578.0m to EL 573.0m at the Upstream wall of Machine Hall is under progress. 10 nos cable anchors out of 31 nos has been installed so far.

·         Cumulative excavation is 194090cum out of 220000cum.


5.8 D/S Surge Shafts (3 & 4):-

·        Modified Design & drawings for Excavation & Support, Design & drawings for D/s Surge shaft collar beam, Instruments & monitoring of D/s Surge Shaft Upper Chambers including link portion have been issued.

·        Pilot shaft excavation of D/s Surge Shaft -3 & 4 (74 RM each) has already been completed.

·        Excavation of drainage gallery (EL. 596 m) around D/s Surge Shaft (168RM) has also been completed.

·        After completion of excavation of top chambers of D/s Surge Shaft -3 & 4 including Link Tunnel, work of collar beam of downstream surge shaft-4 has been completed. D/s Surge Shaft - 3 excavation for collar beam has also been completed.





5.9 Tail Race Tunnels (TRT- 3&4):-

Design & drawings for Excavation & Support of TRTs and Concrete lining & reinforcement details have been issued.


TRT-3 (1151 RM):

Excavation in Heading: 696.0 RM, Drift: 26 RM and Benching: 136.5 RM, Lining:  Invert concreting has been done in a length of 34.0m. Gantry erection for overt lining has also been completed.


TRT-4 (1255 RM): Excavation in Heading: 745.90 RM, Benching: 212.50 RM. Mud mat for Invert lining in U/s of TRT-4 is under progress.


5.10      TRT Outlet :

·         Design & Drawing for slope stabilisation of TRT Outlet structure, instrumentation and monitoring for TRT outfall slope has been issued.                                      

·         Stabilization work i.e. installation of rock anchor and Cladding wall is in progress. In cladding wall, 2381 cum concreting out of 38540 cum has been placed.


5.11      Ventilation Tunnel:-

·         Design & Drawing for Excavation & Support, Concrete Lining & contact grouting have been issued.

·         Excavation of Ventilation tunnel is in progress. (431 RM out of total 581 RM)


6.0 Electro-Mechanical Works:

6.1: Status of Design & Drawings for EM works is as below:

Consolidated EM Design status for Tehri-PSP as on 31.01.17

Document Type

Total Document

Document Submitted

Document Approved

Pending at THDCIL

Pending at Alstom

Pending for first Submission




































(i)     EM SUPPLIES:


Ø Draft Tube Elbow, liner & embedments for Unit No. 5, 6, 7 & 8 received at site.

Ø Stator Frame & Stator Core Clamping arrangement (U#5, 6 & U#7), Stator core laminations for U#5,6,7 & 8 (Lot 1&2) received  along with stator connections for Unit 5 & 6. Stator Frame for Unit # 6 received.

Ø Stator Bar & Connections for Unit # 7 received and stored at Rishikesh.

Ø Spiral case for Unit-8, Spiral case Extension pipe and Embedments for Spiral Casing & Stay Ring for U#5, 6, 7 & 8 received at site. Stay ring for Unit No. 5, 6 & 7 received at site. Shaft seals for U# 5 & 6, Guide Bearings for U# 5 and Air/ Oil Accumulator Lot-1 received at site.

Ø Upper Bracket  for U#5, 6 & 7 received at site.

Ø 02 Nos. PH and 01 No.BVC EOT cranes with runway rails (2 lots) received.

Ø 04 Nos GSU Transformers along with Spares and Tools received and stored at Mechanical workshop, Koti colony.

Ø Embedments for BFV for  Unit No.5,6 7 & 8 , BFV U/S Sleeve for U # 5 ,U# 6 and U# 8  is received at site. BFV D/s Sleeve for U # 5 ,U# 6 and U# 8 received at site. Instruments & Signalling systems for U#5, 6, 7 & 8, seals for U#5, 6, 7, Lever & Counterweight and miscellaneous items for U# 7 received at Site.

Ø Earthing & Grounding System-Embedded Earthing materials Lot-1 and Lot-3 received at site.

Ø Surge arrestor (3+1) with mandatory spares received at site.

Ø Unit Auxiliary Transformers (21Nos), Station service Transformer- Transformer for breaking w/o grid voltage received at site.

Ø CVT’s -03 Nos received at site.

Ø Turbine Shaft with coupling bolts for Unit No.7 & 8 received at site.

Ø Runner with Coupling Bolts for Unit No.6 & 7 received at site.

Ø Following Equipments of Compressed Air system received at site.

Compressors (LP)-02 Lots, Air Receiver Tank-02 Lots, Air Dryer -02 lots, Pressure Reducer-02 lots, Instruments-02 lots & Miscellaneous items for Compressed Air System -02 lots.

Ø Power House Dewatering Pumps (including Flooding), Power House Drainage Pumps, BVC Drainage Pumps, Mobile Oil Pump and Piping & Accessories of Dewatering and Drainage System received at site.

Ø Main Bus Duct – out of 08 lots, 03 lots received and balance under transit.

Ø Bus Duct lot-1 and Auxiliary Bus Duct lot- 01 received at site. All 08 lots of CTs also received at site.

Ø Lower Shaft Unit # 5, 6 & 7 and Upper shaft for Unit # 5, 6, 7 & 8 received at site.

Ø Operating ring, Wicket gate, Head Cover, Bottom Ring  and Miscellaneous items for distributer for Unit # 5 & 6  received. Pit Liners for unit # 5, 6, 7 & 8 received at site.

Ø Cyclone separators- 4 Lots received at site.

Ø MV Panels (Lot 1 & 2) for Unit # 5,6,7 & 8 received at site.

Ø PIV Body & Plug for Unit # 5, 6  & 7 received at site.

Ø Generator Lower Shaft Unit # 5 & 6 received at site.

Ø All 04 Lot of Cooling Water Pumps, Cyclone Separators and Piping & Accessories of Unit Cooling Water System received at site.

Ø Fire Water Pumps(Lot–01) of Fire Fighting System received

Ø Potential Transformer and Surge Protection cubicles for Unit# 8 received at site.

Ø Supporting Structure for main Bus Duct (including Tap off) for Unit # 8 received at site.

Ø Excitation system and static voltage source inverter with all accessories Generator (Batch1 to 5) for all Units received at site.


Off- Shore

Ø Stator bars for Unit-5, received and stored at Rishikesh.

Ø Turbine Shaft with Coupling Bolts for U # 5 received at site.

Ø Runner for Unit No.5 received and stored at site.

Ø GIS & GIB equipments –

-     Item No. 20 – All the 04 Lot/Batches reached at site.                           

-     Item No. 21– All the 04 Lots/Batches received at site.

Ø Circuit breakers (05 Nos) for GIS/GIB received at site.

Ø Filler wire (Lot 1 & 2) and flux (Lot 1&2) for penstock fabrication work received at site.

Ø Lower Shaft Unit # 5 and Upper shaft for Unit # 5 received at site.

Ø Compressed air system for powerhouse with all accessories. (BATCH 1 & 2)-01 lot received at site.

Ø Rotor bar Unit # 5 received at site.



6.3 Status of Erection / fabrication:

Ø Installation of earth mat for Control room area is completed and handed over for Concreting.

Ø Installation of earthing materials for 53m length each at Power House cable Gallery, HVAC Gallery & Service bay are completed.

Ø Installation of Rails for service bay area (Approximately 40M length) is completed.

Ø Fixing of embedments in crane beam in Machine hall has been completed (Total length 2X180 RM). Erection of EOT crane 1 & 2 at Power house has been completed on 29.02.16 & 29.06.16 respectively. Cabling work has also been  completed for EOT Crane No. - 1 & 2. Pre-commissioning  activities of EoT-1 is in  progress.

Ø 03 Nos GSU Transformers for Unit# 6,7 & 8 are shifted and placed in  the respective Caverns. GSU Transformers of Unit # 5 is in transit from Project storage yard and expected to reach Power House by 02.12.2016. Erection of Monorail in GSU Transformer caverns is in progress.

Ø Erection of GIS and GIB works started on 24.09.2015.

Ø GIS– Erection work of circuit breakers with surge arrestor (05 Nos.) have been completed for all Units & Line.    

Ø GIB – Erection work is completed from line side to Pot Yard.                             

Ø Erection of 420kv bushing is completed in Pot yard.                                            

Ø Local Control Panels of Units & line placed in position (GIS & GIB)                 

Ø Laying of control cables between Unit & LCC is completed (GIS) and glanding work is in progress.                                                                            

Ø Interfacing of  U#5, 6, 7 ,8 & Line W-3 with existing Bus bar of GIS is completed.


7     Hydro- Mechanical Works:

7.1 Design & Drawings for HM works:

Level-1 Design document

·   Level-1 Design of HM equipment including penstock steel liner has been approved.


Level – 2 Design documents

a) Penstock Steel Liners

·   Level -2 Design & Drawings for Penstock Steel Liners including U/s Bifurcation, D/s Bifurcations & D/s transitions have been approved.

·      Revised document pertaining to Construction methodology of penstock was approved on 28-10-2016.


b) Gates & Hoists

·   Revised drawings and design of draft tube gate groove liner were received on 28-11-2016. The same has been approved on 17-12-16. All Design and drawings pertaining to Draft tube gate have been approved. Design and drawings of EOT for draft tube gate are awaited from consortium.

·   Hydraulic model test of TRT has been finalized. Consortium shall start submitting The Design & drawings for HM equipment’s at TRT outlet i.e trash racks, Stoplog Gates and Gantry crane soon.



·   All supplies of Steel plates about 9000 MT received at site.


7.3 HM Fabrication/Erection works:

·         632 nos. ferrules of Penstock Steel liner including bend & curved pieces out of 664 nos. have been fabricated so far.

·         In lower Penstock # 6 & 7, erection of steel liner is in progress. 2 nos steel liner each in both Penstocks has been erected so far and handed over for second stage concreting.

·         Total 11 nos of  Penstock Steel Liner for Lower Horizontal portion i.e Penstocks between Thrust collar and D/s side PAC) is transported to erection site.


Physical progress of project works executed till the reporting month of Jan-17 is attached as Annexure-I.


8.0 Issue to be Resolved

a.        Asena Quarry:

After great persuasion NOC is obtained on 16.11.16 from State Pollution Control Board. Now Crusher Plant has commenced operation since 26.11.16. GoUK to provide support for hindrance free operation at Quarry, Crusher plant and transportation of material to project site.


b.        Dumping of muck at village Chopra:

(a)  4.67 Ha. Forest Land diversion for dumping area:

As per DM Tehri’s order, the requisite 9.33 Ha land (double of the 4.67 Ha land) has been transferred and mutated in favor of Forest Deptt on 24.10.2016. This has been uploaded at MoEF website on 05.11.2016. Further, compliance report as desired by MoEF has also been uploaded on 16.11.2016 for IInd Stage clearance. Now, G.O. is to be issued by GoUK.


(b)  Dumping of muck at village Chopra stopped since 30.07.16:

Muck dumping in Chopra muck disposal area still not resumed even after passage of 06 months. Stoppage of muck dumping still continues since 30.07.16 by Chopra villagers to press their various new demands. Due to stoppage of dumping of muck at designated dumping area, stopgap arrangements for disposal of muck have been made within project area. Re-handling of muck will add to the cost of the project.

This stopgap arrangement is leading to shortage of space for storage of crushed material to be brought from Asena and to be stocked in sufficient quantity.

DM Tehri has been requested by THDCIL vide letter dated 16.08.2016, 30.11.2016 and 28.01.2017 for intervention to restart the muck dumping activity at Chopra. Meetings with villagers were held in presence of Distt. Administration.


c.    Permission for Alternate Muck Dumping Area at Koti

As per the decision taken in 7thCCI-PMG meeting dtd 08.05.15, DM Tehri is being continuously requested for giving permission for taking up of muck disposal in alternate muck dumping area at Koti.

(i) State Pollution Control Board has accepted THDCIL proposal and requisite fees has also been deposited on 21.09.2016. State PCB officers have visited the site on 13.11.2016. Further, the case has been forwarded by Regional office, State PCB to Head office, SPCB on 28.01.2017. Now NOC is to be issued by SPCB. Thereafter DM, Tehri to grant permission.

(ii) DM, Tehri in association with THDCIL will identify feasibility and the quantity of muck to be dumped in koti area so that muck dumping at koti site may be done to that level and rest be disposed at other site.


Distt. Tourism Development Officer vide letter dtd. 04.03.16 to DM Office with a copy to THDC proposed that a considerable amount of excavated Muck can be dumped at Koti helipad location for raising of existing level El 826 to a safe level above submergence i.e to El 835. After great persuasion, DM, Tehri vide letter dtd. 31.12.2016 sought report / clarifications from Mining Officer, Tehri. Permission is still awaited.


d.    Problems of Contractor:

Progress of Civil works is severely affected due to financial problems of   M/s HCC, resulting inadequacy of resources at site. After strike called off by HCC workers, remobilization at site is in progress. Operation of crusher at Asena Quarry started.


  9.0 Commissioning Schedule:

Due to encountered Class IV & V rocks, construction methodology had to be changed requiring extra work, heavy stabilization measures eg: cable anchors in various structures and fund crises with Civil Contractor. Project is expected to be commissioned by Sep- 2019.


10.0 Expenditure on the Project

Expenditure incurred on Tehri PSP Project till Jan-17 is  ` 2068.01 Cr. This is including IDC & FC of ` 276.07 Cr.


11.0  Budget Estimate V/S Expenditure

During Jan-17, an expenditure of ` 26.35 Cr. has been incurred on Tehri PSP against budget estimate of ` 83.45 Cr.






(Under construction)


Vishnugad-Pipalkoti Hydro Electric Project (4x111 MW) is a run-of-the-river scheme. It envisages construction of a 65 M high concrete diversion dam harnessing a gross head of 237 M on river Alaknanda (a major tributary of river Ganga). The project is located in district Chamoli in the state of Uttarakhand, 225 km from Rishikesh on NH-58.


·         Capacity addition of 444 MW in the Northern Region, reducing peaking power shortage in the region.

·         Annual Design Energy of 1674 MU (90% dependable year).

·         Integrated Development of Chamoli / Garhwal region in the areas of employment, communication, education, health, tourism, development of Flora & Fauna etc.

·         Out of 13% free power to the home state Uttarakhand, 1% shall be utilized for contribution towards local area development.




Sl. No.

Description of Approvals



Signing of MoU between THDCIL and GoUK for investigation & preparation of DPR



Approval of Commercial viability of the project by CEA.



Signing of Implementation agreement.



Approval of Techno-Economic clearance to the project by CEA.



Investment approval to the project amounting to Rs. 2491.58 Cr (March-08 PL) by CCEA.



Revision in “Minimum Environmental Flow” by MoEF from 3 Cumecs to 15.65 Cumecs. 



Stage-1 clearance of 80.507 Ha forest land by MoEF.



Final approval for transfer of 80.507 Ha of forest land by MoEF. 



Issuance of G.O. for transfer of 80.507 Ha of forest land by GoUK.



Signing of Lease agreement for 80.507 Ha. Forest land.



Declaration of Land (identified for compensatory afforestation) as protected forest in lieu of 80.507 Ha. forest land.




Investment approval to the project amounting to ` 2491.58 Cr (March-08 PL) was accorded by CCEA in Aug’2008. Though the expenditure amounting to 50% of the approved cost has not been incurred but there is time overrun in the project. Therefore, as desired by MoP, RCE at Dec-15 PL (along with the proposal of Time and Cost overrun) of ` 3361.22 Cr (including IDC & FC of ` 256.47 Cr.) has been submitted to MoP vide letter dated 22.10.2016 for approval.                                              



Major civil works includes a 65 M high Concrete dam, 13.4 Km long Head Race Tunnel, 3.07 Km long Tail Race Tunnel, Spillways, Underground Power House & Transformer hall, 3 nos. under ground Sedimentation Chambers, U/S and D/S Surge Shafts.





Construction of the project is proposed to be funded with a Debt: Equity ratio of 70:30. The Equity portion; 50% is to be shared by THDCIL and remaining 50 % is to be shared by GOI and GOUP in the ratio of 75: 25 respectively.

For the funding of the debt portion (70 %) of the project, loan agreement for US $ 648 million has been signed with World Bank on 10th Aug-11. The loan includes US $ 10 million for Capacity Building and Institutional Strengthening (CBIS).The loan has become effective from 7th Nov-11 with tenure of 29 years.  




·         Geological investigations at all locations of the project and various required studies have been completed.


    Rehabilitation & Resettlement :

THDC India Ltd has formulated a Rehabilitation & Resettlement policy (R&R Policy) for the Vishnugad Pipalkoti Hydro Electric Project. The Policy is based on the National Rehabilitation & Resettlement Policy 2007 (NRRP-2007) incorporating the better features considering the World Bank Guidelines on Involuntary Settlement and needs & expectations of the stakeholders.


The Policy addresses the R&R issues through proactive approach and appropriate Planning on Land Acquisition. Besides disbursement of compensation by Special Land Acquisition Officer (SLAO), the Policy envisages provisions of grants and other benefits considering the categories and the Entitlements.



For effective implementation of R&R policy, Rehabilitation Action Plan (RAP) has been formulated so that after reasonable transition period, the affected families improve, at least regain their previous standard of living, earning capacity and production levels.


   Land Acquisition:


·         A total of 132.029 Ha. of Private land and forest land has been acquired for VPHEP of which 31.639 Ha is Private Land and 100.39 Ha is Forest Land.


·         The Implementation of Rehabilitation Action Plan (RAP) and R&R related Activities are presently under Progress. The Project has taken over the possession of requisite 31.639 Ha. of Private Land across 7 Villages. Around 94% of Compensation amount has been disbursed by Special Land Acquisition Officer (SLAO). Of the 07 Affected Villages, only one village i.e. Haat is getting relocated.


·         In village Haat 20.337 Ha land has been acquired. Through District Administration 83 residents households have been identified. 77 families have signed agreement with THDCIL, 77 have constructed houses and 72 have shifted. 54 families have demolished their houses.


·         The process of extending the Special Package among “Non-Residents” House Owners as per eligibility is underway. District Administration has verified the list of 50 Non-Resident HSO’s. The registration has been completed for 22 HSO’s & 20 Houses demolished.



Social Responsibilities:

·         Various skills up-gradation & income restoration programs are being undertaken for livelihood promotion and better employment opportunities for the Project Affected People (PAP). Various Trainings comprising of dairy farming, vermin composing, cutting & tailoring, knitting, kroiler management, Napier grass production, Production of cash crops, promotion of Tulsi for herbal medicines, horticulture activities, bee keeping etc. have been imparted to PAPs. Apart from this, Vocational Trainings in hotel management, skill enhancement activities, etc. are also undertaken, in coordination with various institutes like GMR Foundation, Dr. Reddy Foundation, and Industrial Training Institutes in nearby areas.

·         During August, 2015, knitting and tailoring course of 3 Months duration was started in village Salna. 34 women from village got benefitted. Similar Training commenced among Female PAPs of Haat residents from 8th April, 2016 at Relocation site at Daswana. The Trainer imparting Training has been deputed by Project.

·         The Public Information Center (PIC) established at Gulabkoti has been equipped with computers. A trainer has been engaged by Project & basic training on Computers is being imparted among youths of Gulabkoti & nearby village. Till date around 12 Youths have been benefitted. The local youths 5 in number interested in computers are being imparted training at present. Various community development programs in affected villages are in progress that comprise of; Infrastructure activities, drinking water supply, distribution of generators, school bags, School Uniforms, Sweaters, Solar Lights etc.

·         The Scholarship Policy of VPHEP is in the process of implementation ever since its inception in 2010. Till date, around 709 students that include 382 Girls from Project Affected Villages have been benefitted from the said Scheme. A Cumulative Expenditure of ` 21.40 Lacs stand incurred till academic year 2015-16.

·         The 1st Installment of the Scholarship Policy of VPHEP for the Academic year 2016-17 under Meritorious category has been disbursed among 54 students of which 20 comprise of Girl students. An amount of Rs. 90,000.00 has been incurred under said category.

·         Subsequently, the 1st Installment of the Scholarship under Project Affected and Poor / Vulnerable / Girl Students category for the Academic Year 2016-17 has been disbursed among 41 & 120 Students respectively of which 18 & 86 respectively comprise of Girl Students. An amount of ` 2,21,250 & ` 4,75,750 respectively stand incurred by Project to this effect.


Infrastructure works:

All four bridges, approach roads to bridges, colony area, Dam site and Power house site, have been completed.          

Most of the infrastructure development works have been completed.  

Supply and installation of equipment of dam site sub-station has been completed. Handing over of sub-station to THDCIL is expected shortly. Installation of equipment in Power House Sub-station building by UPCL has been completed.    


7.0   PROJECT STATUS: Project is being executed through two separate EPC contracts and one Design Review Consultancy Package.


1.    Design Review Consultancy:

     Contract Agreement for Design Review Consultancy Package has been signed on 28th Dec-13 with M/S SMEC International Pty Ltd, Australia amounting to INR ` 10 Cr (appx.) and AUS $ 557 thousand (appx.). The work is in progress.




2.    Civil works and Hydro - Mechanical works :   

      Civil & HM works awarded to M/S HCC Ltd and agreement has been signed on 17.01.2014 amounting to INR 1597 Cr (appx.).

The progress is as under: 

·         River Diversion: Excavation of outlet cut & cover has been completed. Slush deposited during flooding has been removed from Outlet cut & cover portion and lean concreting completed. Raft for 1st part of the inlet cut & cover portion has been completed and Reinforcement work of 2nd Part is in progress. Overt concrete lining completed upto 260.22 m out of 494m. River diversion is now targeted to be achieved by April.’2017.

·         For desilting Chamber- 1, Crown slashing in DC-1 completed in entire length of 390 m. Transition portion slashing completed 23m out of 35m on upstream and 2.5m out of 20m in downstream.

·         For desilting Chamber- 2, crown slashing  completed upto 219 m out of 390m.

·         For desilting Chamber- 3, Pilot tunnel completed in entire length of 390 RM. Crown slashing completed upto 62.5 m out of 390m.

·         Excavation of HRT by DBM from dam site completed upto 72.5 m.

·         Excavation of Offtake adit to intake tunnels (EL 1242m) completed upto 83.5 m.

·         Excavation of Adit to SFT completed upto 28.5m.

·         Excavation of Branch Tunnel-1 (from HRT to DC-1) completed upto 62.5 m.

·         Adit to HRT gate operation chamber has been excavated in a length of 225 m from the portal.   

·         Open excavation in left bank Dam area above EL 1270: There is no progress in open excavation due to non-mobilization of PRW at this front after strike call off by HCC workers.

·         In Power House right side slashing completed upto 69 m & left side slashing completed upto 20.5 m out of 146m. Due to technical reasons, right hand side slashing is on hold and shall be taken up simultaneously with left hand side slashing after completing 69m on left side.    

·         In Transformer hall side slashing is in progress and completed upto 51 m.

·         In Main Access Tunnel (MAT), excavation has been done upto a length of 397.5 RM out of 407 RM.

·         In Adit to TRT, excavation has been done up to a length of 590.5 RM out of 609 RM.

·         Development of TBM Platform (300m x 75 m) is in progress. 95% excavation work has been completed. Superstructure works of DG set is in progress. In the TBM launching adit area, support measures are being taken to stabilize the face.

·         Open excavation in TRT (Tail Race Tunnel): Excavation work at outlet is in progress since 21.11.2016.

·         Excavation in bottom Adit to U/S Surge shaft has been completed in a length of 30.5 m out of 325.5m.

·         Adit to bottom of Downstream Surge Shaft (352m): Excavation completed in 142m length out of 352m .

·         Adit to top of Downstream Surge Shaft (57m): Excavation completed in 21.5m length out of 57m.

·         Honb’le District Court against THDCIL’s petitions has passed orders for temporary injunction to restrain the residents of village Haat / Harsaari (Power House site) and Gulabkoti (Dam site) from creating any obstruction. For Gulabkoti (Dam site) last hearing was held on 30.08.16 and decision was given in favour of THDCIL. Next date of hearing for Haat/Harsari (For Power House) is 13.02.2017. For Durgapur village (TRT outlet area), as agreed with the villagers in the meeting with DM on 08.04.2015, required studies are being conducted by NIRM. Villagers have been advised by the Distt. Administration not to stop the work.

Against THDCIL’s petition, temporary injunction has been granted by the Civil Judge on 05.10.16 in Durgapur village also. Next date of hearing is 17.03.2017.


3. Electro - Mechanical works:

Subsequent to signing of contract agreement with M/s BHEL on 18.11.2014, the progress is as under:

·         Model testing of Turbine has been completed.

·         Power House Station Layout has been approved.

·         Measurement of soil resistivity at five locations (TRT outlet area, Intake tunnel area, Access tunnel area, Cable tunnel, Ventilation tunnel, pothead yard and GIS control area) of project has been conducted, on remaining six locations (Power intake area, Penstock tunnel area, Tailrace tunnel area, Power house and transformer halls, Butterfly valve area and PAC Area), shall be conducted on availability of fronts.

·         Storage space for BHEL has been identified.

·         Crane clearance diagram of EOT crane for Power house, BFV and GIS Hall has been finalized.

·         Design documents/drawings related to Turbine i.e embedded parts, foundation parts, guide apparatus and control gear of turbine etc. has been approved.

·         Design memorandum of generator including drawings and documents i.e. sectional arrangement, loading on foundation, bottom bracket sole plate, thrust bearing assembly etc. are approved single line diagram of 400 kV GIS and Pothead yard is approved.

·         Design Memorandum of HVAC, Passenger Elevator, Illumination system, Earthing system and Documents related to drainage dewatering calculation & diagram are approved.

·         Balance Design and Engineering is in progress.



The expenditure incurred on VPHEP Project till Jan-17 is ` 1016.89 Cr. including IDC & FC of ` 28.94 Cr.



The project was originally conceived to be commissioned within 54 months from the award of Civil and HM works i.e. by July’2018. Contract for Electro-mechanical works could be signed in November’2014 with a completion period of 48 months i.e. by Nov.’2018. As per Master Control Network prepared dovetailing the Civil & HM and EM Works, anticipated commissioning is Dec’19.



During Jan-17, an expenditure of ` 36.05Cr. has been incurred on VPHEP against budget estimate of ` 36.05 Cr.



(Under construction)

Dhukwan HEP is envisaged to be constructed at the toe of existing Dhukwan masonry cum earthen dam across Betwa river. The 8.22m high existing dam is 2972m long of which 1172m length is constructed in masonry/lime concrete while the remaining 1800m length is made of earthen. The masonry part of the dam is fitted with 383 no. of gates 8 feet high, capable to pass a discharge of 15160 cumecs.



SL. No.


Description of Approvals


2nd Sep09

Implementation agreement was signed with Govt of U.P. to take up DPR updation work of Dhukwan Small Hydro Project (24MW)


30th Jun10.

DPR was submitted to GOUP


20th Dec-10

DPR was cleared by MANIT on for techno-commercial vetting and for getting qualified for subsidy benefits.


29th Mar’11

THDCIL Board approved DPR of the project including investment at estimated cost of `195.42 Cr including   `12.89 Cr IDC at April-2010 PL as per the provisions of DPR. Equity portion i.e. 30% of the project cost shall be funded by the corporation from its internal resources.


18th Apr12.

Combined proposal for Stage-I Forest Clearance of 39 Ha land was submitted to State unit of MOEF


23rd May’12

State Advisory Group (SAG)  cleared the proposal


27th Nov’12

Stage-1 clearance of 39 Ha. Land with fulfillment of certain conditions.


17th Sep-13

2ndStage Forest diversion has been cleared by Central Nodal Forest officer, Lucknow



Gazette Notification for 39 hac. forest land was issued


5th Dec-16

PPA signed with UPPCL.



Approach Channel approx. 502m long, 4 no. RCC Barrels, Intake works, HRC approx. 1451m long, Forebay, Spillway with spill channels, Surface Power House, TRC approx. 919 m long, Cross Drainage Works and Switchyard.



All Infrastructure works for Type-II Quarters, Office building and Field Hostel/Guest House are completed except water supply, which is likely to be completed by Nov-16.


4.0 Award of works:

·                  The work for Civil Package has been awarded to M/s Sew Infrastructure Limited for ` 94.93 Cr on 30.10.14 with commencement date as 30.11.14 and time for completion is 30 months i.e. by May-17.

·        Contract for Hydro- Mechanical package has been awarded to M/s Aarti Infra Projects Pvt. Ltd., Nagpur for `11.24 Cr on 14.08.15 with date of commencement as 14.09.15 and time for completion 25 months i.e. by Sept-17.

·        For Electro-Mechanical package, awarded to  M/s Hunan Allonward Hydro Generating Co. Ltd., China (Lead Partner) & M/s Sh. Saravana Industries Pvt. Limited, Trichy for ` 81.63 Cr on 23.12.15 with commencement date as 23.01.16 and time for completion 25 months i.e. by Feb-18.




The progress at various fronts is as under:

      i.        Approach channel (90000cum.): 92% excavation has been completed upto 2nd dry season (May-16 to June-16). Cumulative excavation 83000Cum.

    ii.        Intake area: The structure has to be constructed in two phases to avoid any flooding during construction. 1st phase Ch.(-) 26.50m to (-)56.894m Barrel Slab Concrete (RL 272.50m) has been completed. 2nd phase Ch (-) 56.894m to          (-)93.73m, hard rock excavation has been completed.


Left & Right Bank Transition wall from Ch 0.0m to Ch (-) 26.50m has been completed upto top level (RL 275).


   iii.        HRC (Head Race Channel) (1451 RM):

Excavation: Excavation of HRC (40000 cum) has been completed.

Filling (330000 cum): Filling of HRC Embankment has been completed in Dec’2016, except in crossing zones. (CAPEX related MoU 2016-17 Target with completion by Dec-16).

   iv.        Fore-bay area:. Excavation of forebay area has been completed. CR Masonry wall from Ch 00.00 to Ch 125.40 (Left Embankment) has been completed. From Ch 00 to 54.15 & Ch 125.40 to Ch 111.00 (Right Embankment) is in progress.

    v.        Power Intake Area: Power Intake & Trash Rack pier/wall concrete is in progress and around 60% completed.

   vi.        Power house :


a.          Service bay area:

Raising of Wall & Columns is under progress and maximum EL 262 achieved.


b.          Unit Area: 

Excavation in Unit area including sump area, Draft tube area and Tail pool area has been completed. After completion of base concrete, the Grouting of Power House Unit area as per Recommendation of Geologist has also been completed. Presently reinforcement work for sump & Unit-3 areas is in progress.

  vii.        Penstocks area: After completion of excavation work, base concrete of Upper Horizontal portion / inclined portion & Lower Horizontal portion has been completed. All the three penstocks are ready for ferrule erection work.

viii.        TRC (Tail Race Channel) (250000 cum/919 m length):  With Excavation of 4500 cum during the month, cumulative excavation is 208000cum (83.2 %).

   ix.        Cross drainage Works: Work for aqua ducts falling in HRC area at Kappa Nala and Nala-1 & Nala-2 has been completed. Concreting for merger of Nala-1 & Nala-2 is nearing completion.

    x.        Overhead Road Bridge at HRC: Construction of bridge was completed on 10.09.2016. Construction of approach road on either side is under progress.



Except design & drawings of 5T capacity Portable Hoist, all design & drawings have been approved.


Fabrication of all 78 nos ferrules for penstock at the workshop has been completed.  Out of which 55 nos. ferrules have also reached at site. 

Erection of 1st stage embedment at HRC Intake and Power Intake area is under progress and erection of ferrules is being taken up.




Design & drawing of power house Plan, cross section, longitudinal section, earth mat, lightning protection and all drawings for Generator have been approved. Design & drawing  of Turbine Unit Assembly, Draft tube Elbow, Draft tube Cone, Spiral case, Pit liner, Runner Chamber with Runner Assembly, bottom ring, Guide vanes, shaft assembly, Turbine Guide Bearing, Runner blade etc. for Turbine, EOT crane (General arrangement), stay ring, support cover, top cover, Governor, UAT & SAT have also been approved. Balance design & drawings are under progress.


Placing of Earth mat at service bay area, Penstock area upto Intake Gate and Unit area till Draft tube area has been completed. DT Elbow liners for all three units received at site.


Fabrication of DT Cone of all three Units is in progress at ex-works at Trichy, Tamilnadu. The work of EOT Crane has been taken up by Contractor. The EOT crane is planned to be delivered at site by 31.03.2017.



Status is as under:

Project layout plan, Excavation drawing of Approach Channel, HRC intakes, HRC transition, HRC including Curved Reach, Penstock Intakes, Penstocks, Power House, Fore bay, Tail pool, TRC, Spill Channel, Channel(Intake), Plunge pool and Service Bay Concreting have been issued.  Excavation and Concreting drawing for Cross drainage works at Kappa Nala Concreting and reinforcement for HRC Intakes and Bridge have also been issued.



a.     Construction Power:

Frequent power interruption in 11 KV electricity line of Dhukwan SHP is causing hindrances in smooth progress of project works. GoUP need to instruct UPPCL to provide roaster free power to Project.


b.    Power Evacuation Arrangement:

·         Power Purchase Agreement (PPA) of Dhukwan SHP has been signed with UPPCL on 5th Dec-16. As per PPA, arrangement for power evacuation is to be done by UPPTCL.

·         Draft Revised Implementation Agreement (RIA) was submitted to GoUP on 29.10.16. An Affidavit was submitted to UPPCL on 03.11.16 committing compliance of the Implementation Agreement dated 02.09.09 and subsequent amendment (RIA). Power Purchase Agreement (PPA) of Dhukwan SHP has been signed with UPPCL on 5th Dec-16. As per PPA, arrangement for power evacuation is to be done by UPPTCL.

·         Accordingly, Chief Engineer (PPA) UPPCL vide letter dtd. 05.12.16  informed Director (Works & Project) UPPTCL regarding signing of PPA and arranging construction of Transmission lines and power evacuation system before Feb.’2018.

·         Draft Connection Agreement to be signed between THDCIL and UPPTCL has been submitted to UPPTCL, Lucknow on 01.02.2017. Now, GoUP and UPPTCL to confirm dates for signing Revised Implementation Agreement and Connection Agreement respectively. 



7.0   Commissioning Schedule:

Though the project was awarded on 30-Oct-14, however, actual work could start only when land was made available after cutting of trees which was completed by forest Deptt. in Apr-15.Subsequently, HM & EM works were awarded in Sep-15 and Dec-15 respectively. Project is expected to be commissioned by Feb- 2018.



Expenditure incurred by the corporation on Dhukwan HEP till Jan-17 is ` 100.26 Cr.



During Jan17, an expenditure of ` 7.74 Cr. has been incurred on Dhukwan HEP against budget estimate provision of ` 4.35 Cr.







Jhelum Tamak HEP (108 MW)

·         Updated DPR for installed capacity of 108MW was submitted to CEA on 4th Dec-12. Examination of the updated DPR of the Project is under progress in CEA.

·         Proposal for environmental clearance was put up to EAC in its 67th meeting held on 06.06.2013. MoM uploaded on MoEF’s web site. EAC asked to submit a detailed note with plans of Nandadevi Biosphere Reserve (NDBR) and Valley of Flower (VOF) on the cumulative impact of Dhauli Ganga projects and mitigation measures to counter adverse impact on biodiversity of both NDBR and VOF for consideration of EAC in their next meeting while considering environment clearance. In the mean time Supreme Court (SC) in August’13 issued  directives to MoEF and GoUK not to grant any Environment Clearance / Forest Clearance for any HEP in the state of Utttarakhand till further orders. SC further directed MoEF to examine, as noticed by WII in its report, as to whether the proposed 24 projects (Jhelum Tamak is one of these 24 projects) are causing significant impact on the biodiversity of Alaknanda and Bhagirathi River basins. Final decision in the matter is awaited.

·         Land case for stage-1 forest clearance of 88.29 Ha land was submitted to GoUK on 30.11.2012.  GoUK vide their letter dated 25.06.2013 have sought some information / documents like approved CAT plan, Digital map in CD, NOC from DM and affected Gram Sabha in prescribed format etc. for further consideration. All the information / documents have been submitted. Meeting with Principal Chief Conservator of Forest, GoUK has been held on 10th Sep-13 for approval of CAT Plan. The revised CAT plan after incorporating the points of MoM is to be submitted by DFO, NDBR to Principal Chief Conservator of Forest, GoUK. GoUK has forwarded the case with their recommendations to MoEF, New Delhi vide letter dated 17th Dec-13.

·         Defense Clearance has been granted by Ministry of Defense on 05.03.2014.


Malari Jhelum HEP (114 MW)

·         The viability report of 65 MW has been cleared by CEA on 11.02.2014. Action for DPR preparation will be taken up after getting clearance of the project by Supreme Court.


Gohana Tal HEP

·         Feasibility Report (FR) of Gohana Tal HEP for installed capacity of 50 MW having estimated cost of ` 488.52 Crs. has been submitted on 31st Jan-2013 to Secretary (Energy), GoUK for approval of the scheme, so that DPR preparation work can be taken up.


Karmoli & Jadhganga HEPs

As per Central Govt. Notification, the projects fall in the Eco-sensitive Zone. Hence no activities are being taken up for these projects.



The above  five Projects of THDCIL have been affected due to the Supreme Court order dated 13th Aug-2013 directing MoEF and State of Uttarakhand not to grant any Environmental clearance or Forest clearance for any hydro electric project in the State of Uttarakhand until further orders. Final decision in the matter is awaited. 

THDCIL has also filed a writ petition in Hon’ble Supreme Court on 06.09.2014 representing the case of Malari Jhelam and Jhelam Tamak HEP.





Bokang Bailing HEP (330MW)

A proposal for undertaking drilling and drifting activities at project site was submitted by THDCIL in Sep-11 with DFO, Pithoragarh. After consideration of proposals at various levels, the Chief Wildlife Warden, GoUK has forwarded its recommendations on the proposal to Principal Secretary (Forest & Env.), GoUK on 17th Oct-12. SBWL in meeting held on 16th March-2013 recommended the proposal for undertaking drilling and drifting activities at project site. MoM were issued on 03.05.2013. Proposal was forwarded by Principal Secretary, GoUK to MoEF on 21.06.2013 for further consideration of NBWL and according permission for drilling / drifting activities at project site. DIG (Wild Life), MoEF, GoI on 02.07.2013 requested CWLW, GoUK to submit some documents so that the proposal can be considered by NBWL. All the documents were submitted to DIG (Wild Life). Bokang Bailing HEP is excluded from the protected Askot Musk Deer Park Sanctuary. The proposal has been considered by NBWL in their meeting held on 12.08.2014. In the meeting, GoUK has agreed to permit THDCIL for Survey & Investigation works as the project lies outside the protected area. Hon’ble Supreme Court, in its judgment dtd. 12.10.15, vacated its earlier order of not granting any environmental and forest clearance except for 24 projects in Alaknanda-Bhagirathi river basin. Addl. Secretary (Forest & Environment) vide letter dtd. 16.02.16 advised Chief Wildlife Warden, GOUK to take necessary action to allow THDCIL to carryout drilling / drifting activities.








Malshej Ghat PSS  (600 MW) and  Humbarli PSS  (400 MW)

·         To develop the hydropower in Maharashtra, Govt. of Maharashtra (GoMH) has allotted two Pumped Storage Schemes namely; Malshej Ghat PSS  (600 MW) and  Humbarli PSS  (400 MW) to the Joint Venture (JV) of THDCIL and NPCIL in April-08 for Survey & Investigation and Preparation of DPRs to ascertain the viability of projects, and for subsequent implementation of projects if found viable.


A.               Malshej Ghat PSS

·         THDCIL submitted DPR of Malshej Ghat PSS with enhanced installed capacity of 700 MW to the Secretary (CAD), GoMH on 16th Sept-10, therein also requesting to sign the MoU for implementation of the project.

  • Hon’ble Dy. Chief Minister of Maharashtra in meeting held on 29th April-11 agreed for implementation of the Malshej Ghat PSS (700 MW) through JV of THDCIL and NPCIL subjected to approval of state cabinet. Discussions were held with GoMH on draft Implementation Agreement (IA) on 5th Nov-11 and comments of the JV on draft IA were submitted to Jt. Secy (WRD), GoMH on 18th Nov-11.

·         Hon'ble Minister of Power, GoI vide letter dated  17th Sept-12  and letter dated 21st March-13 had requested Hon’ble Chief Minister, Maharashtra to consider approval of signing of Implementation Agreement. In response, Hon’ble Chief Minister of Maharashtra vide letter dated 4th April-13 has desired to discuss the issue with the concerned officials.

·         CMD, THDCIL vide letter dated 03rd May’2013 has sought appointment from Hon’ble CM, GoMH. Further, Director(Technical) THDCIL vide letter dated 28th Sep-13 to the Chief Secretary, GoMH, Additional Chief Secretary to CM, GoMH & Principal Secretary(CAD), GoMH requested for scheduled meeting with CM, GoMH regarding signing of IA for Malshej Ghat PSS.

·         Further Secretary (Power), GoI requested to Chief Secretary (GoMH) to convene the meeting vide D.O. letter dtd. 24.07.2013 and again Hon'ble Minister of Power, GoI vide letter dtd. 13.01.2014 to CM, GoMH requested for personal intervention in the matter so that issues are  discussed & finalised  at the earliest to facilitate signing of IA.

·         In reply, dated 24th Jan-14, Hon’ble Chief Minister, GoMH has mentioned that matter is being examined through Principal Secretary (Water Resources), GoMH and shall back to MoP, GoI at earliest. The said matter is being persuaded by Pune office with WR Deptt. and Chief Minister's office, GoMH. Accordingly officers of THDCIL & NPCIL had a meeting with Principal Secretary (CAD), GoMH in May’ 2014.

·         In persuasion with GoMH, the D(T), THDCIL vide letter dtd. 05th June’2014 had requested the Chief Secretary, GoMH for an early decision on signing of Implementation Agreement for Malshej Ghat PSS. Also a meeting is held with Jt. Secy./ CE, WRD, GoMH by Addl. GM, Pune on 08.10.2014.

·         On the invitation of Govt. of Maharashtra, a meeting was held on 27.04.2015 under the Chairmanship of Secretary (WRM & CAD) with the representatives of THDCIL & NPCIL for discussion on Terms & Conditions of Draft Implementation Agreement for Malshej Ghat PSS in which the J.S.  (CAD), C.E. (Hydro Project) and representatives of MSEDCL were also present. 


During the meeting the Secretary (CAD) informed that the State Govt. of Maharashtra is also willing to enter into the JV as a partner for implementation of the Malshej Ghat PSS with state share of around 26% to 30% in the Jv.. Secretary (CAD) also desired that a Memorandum of Understanding / Share holder agreement may be considered between JV partners to identify roles and responsibilities of JV partners, till JV Company is formed.  Secretary (CAD) requested THDCIL to give a Road Map regarding issues and steps involved for implementation of Project through JV of State Govt. , THDCIL and NPCIL. They also informed that they would like to apprise Chief Secretary on the same and process the case for decision of State Cabinet for formation of JVC with State as a partner.

·         THDCIL has submitted the road map, on steps involved for implementation of Malshej Ghat PSS through the Jv Company (along-with participation of State Govt. of Maharashtra), to WRD, Mantralay, GoM on 15.05.15 for their consideration.

·         A meeting was held by WRD, Mantralay, Maharashtra, under the chairmanship of the Hon’ble Chief Minister, Govt. of Maharashtra, on 19.11.2015, during which, it was agreed upon for implementation of Malshej Ghat PSS (700MW) through the proposed JV of THDCIL, NPCIL and WRD with participation of State in the JV with 30% equity (minutes of meeting issued by WRD, Maharashtra, on 04.02.16).

·         A meeting was held by D (T), THDCIL with NPCIL, on 04.04.16 at Mumbai, with their Director (Projects) regarding the future implementation of Malshej Ghat PSS by the JV of THDCIL-NPCIL and Govt. of Maharashtra. Discussion included sharing of balance 70% of the equity of the new JV between THDCIL and NPCIL. THDC from its side also expressed that THDCIL will prefer the representation of NPCIL on the Board of the new JV with THDCIL being the lead partner of the JV, as the development of hydro power is the core strength of business of THCIL. NPCIL from its side expressed that since firming up on sharing of the balance 70% share, is an investment decision on development of Malshej Ghat PSS project, they shall have to obtain the approval of their board. They also indicated that they will prefer to obtain the approval of their board on this issue after the firm decision of WRD for allotment of the project to the JV.

·         For processing proposal for formal approval of the Infrastructure Committee of the Cabinet on participation of the State Govt. of Maharashtra with 30% equity in the JV, and for implementation of Malshej Ghat PSS, WRD on 12.04.16, had requested THDCIL to submit the consent of THDCIL and NPCIL on implementation of the Malshej Ghat PSS through the JV of THDCIL-NPCIL and Govt. of Maharashtra with 30% equity participation of the state of Maharashtra in the new JV, along-with request to inform the intended distribution of balance share between THDCIL and NPCIL. 

·         THDCIL, vide its letter dated 21.04.2016, requested NPCIL to submit its consent on implementation of Malshej Ghat PSS through the JV of THDCIL – NPCIL and Govt. of Maharashtra, and to inform their intended share in the new JV. 

·         THDCIL vide its letter dated 30.04.16 to WRD submitted its consent on implementation of project through JV of THDCIL-NPCIL and Govt. of Maharashtra with 30% equity participation of Govt. of Maharashtra in the new JV. However clarified that the distribution of balance share between THDCIL and NPCIL shall be finalized after approval of the Board of the respective PSUs.



·         The WRD Maharashtra, has initiated the process for obtaining comments of four Departments wiz Planning Deptt., Finance Department, Department of law & Judiciary, and from Energy Department of Maharashtra Govt. for obtaining necessary approval of the Infrastructure Committee of the GoMH on implementation of the Malshej Ghat PSS through the JV of THDCIL-NPCIL and Govt. of Maharashtra on 20th May’2016.

·         The department of WRD, GoMH has received back the comments on its proposal from Planning deptt, Finanace Deptt., and from the Department of law Judiciary. However the comments of Energy department were awaited. The Director (T), THDCIL vide his letter dated 12th Aug’16 had requested the Secretary (CAD), GoMH, for his personal intervention for expediting the comments from Energy Department of GoMH

·         The final comments from Energy department after consultation with MSEDCL have now been received in WRD, GoMH.

·         The WRD has processed the clarifications on the observations of Finance department of GoMH. They are now waiting for comments of Finance Department for finally processing the case for approval of Infrastructure Committee. 

·         The finalization of distribution of 70% share between THDCIL & NPCIL is still pending for decision on the part of NPCIL. The freezing of distribution of this 70% shall be required by WRD for processing the case for approval of Infrastructure Committee of the State Cabinet.

·         The EIA studies have been completed and the draft EIA / EMP report is ready. The validity of TOR has expired on 23.10.2012 and fresh approval of ToR shall have to be obtained after signing of Implementation Agreement with GoMH. Accordingly, the re-validation of EIA/ EMP studies shall also be required after obtaining the fresh approval of the TOR.

·         After allotment of MGPSS, for implementation to the Jv. the existing DPR of the project shall also need to be updated and revalidated again in view of New Guidelines of CEA for preparation & submission of DPR to CEA along-with revalidation of already made EIA/EMP studies.


B. Humbarli PSS 

·         The Humbarli PSS is located on the fringe area of Koyna Wild Life Sanctuary (KWLS) affecting six villages, namely; Torane, Gokul, Humbarli, Kaamergaon, Mirgaon and Deshmukhwadi. The total requirement of land of KWLS is 70.80 Ha., out of which 47.623 Ha. is private land of villagers falling within the KWLS.

·      In May’2010 the revised proposal to carry out S & I works in 9.71 Ha. land covering 4.12 Ha. of Reserve forest land and 5.59 Ha. of Private land (falling under KWLS) was submitted to Conservator of Forests (through Executive Engineer, Koyna Dam Maintenance division).

·      On recommendation of the proposal by State Board for Wild Life (SBWL) in its meeting held on 28th June-11 in Mumbai, the Standing Committee of NBWL in its 31st meeting held from 12th -13th Aug’2014 have cleared the proposal for Survey & Investigation of Humbarli Pumped  Storage Project (2X 200 MW) in consultation with Wild Life Department.

·         Approval of ToR for EIA / EMP studies was obtained on 31.08.2009. The validity of ToR expired on 30.08.2013 (after four years of approval of ToR) as per the OM No. J-11013/41/2006-IA.II(I) dated 22.03.2010 of MoEF.


·         During the meeting of THDCIL & NPCIL held with Secretary (CAD), Govt. of Maharashtra on 27.04.2015, the issues for further line of action on development of Humberli PSS was also discussed. During the meeting it was appraised to GoM that that the tentative conversion cost of Humberli PSS on tentative updated cost is coming to the range of Rs 8 – 9 per unit (Point No.3 of MoM issued on 07.05.15) .

·         It was further apprised to them that for the Jv., it would be possible to incur expenditure on S&I / DPR only after a firm commitment on the part of GoM, on allotment of project to JV, signing of IA and signing of PPA for entire power from the project. Meanwhile a desk study may be carried out to review the project, particularly with regard to conversion losses (which are 30% as per State DPR), layout and sizing of structures, and to explore for enhancement of capacity of upper reservoir etc.






Under India-Bhutan Co-operation in hydro development, DPR Updation work of following two projects was assigned to THDCIL

a)            Sankosh HEP (4060 MW)

b)            Bhunakha HEP (180 MW)


Sankosh HEP (4060 MW):

·         THDCIL had submitted updated DPR of Sankosh HEP considering Rock-fill Main dam option to MoP, MEA, CEA and CWC in Apr’09.

·         CWC suggested that the possibility of Concrete Dam be explored for better handling of sediment as also keeping longevity of Dam in view. RGoB requested that sediment studies be conducted.

·         Cost Estimate for updation of Sankosh DPR amounting to ` 15.25 Cr was sanctioned by MOP. The agreement between RGoB and THDC was signed on 23rd Mar-10 at New Delhi.

·         DPR of Sankosh HEP (4060MW) with Concrete Dam option was prepared and submitted to CEA and CWC on 31.05.11.

·         In view of high tariff of ` 7.29 (levelised) at Sankosh HEP  Govt. of India and Royal Govt. of Bhutan decided that viability of Sankosh be further improved by optimizing the height of the dam.

·         Go ahead for preparation of DPR of Optimized Sankosh HEP was given by EJG. Sankosh capacity has been downsized to 2560 MW with design energy as5900 MU. Average tariff has come down to ` 3.30 (levelized) with Roller Concrete Dam option (No Free power, No Corp Tax).

·         DPR preparation work for optimized Sankosh project (2560 MW) has also been completed and DPR has been submitted to CEA and CWC on 27th Aug-12.



Sankosh Main Dam Project:

                      Installed Capacity                            2500MW

                      Annual Energy                                   5949.05 MU (design energy)


Sankosh Regulating Dam Project:

                      Installed Capacity                              85 MW

                      Annual Energy                                   416.34 MU(design energy)


·         EJG Secretariat confirmed vide letter dated 30th April 2014 that the EJG during its 12th Meeting held in Thimpu on 12th March 2014 had approved the additional cost of DPR of Sankosh HEP for ` 70.022 Million without Service Tax. With this, the  agreement cost `152.50 million shall be revised to ` 222.522 million without Service Tax.

·         An Invoice amounting to ` 59.5187 millions has been raised to RGoB for payment against approved additional cost for updation of DPR. Part payment of  ` 9.52 millions has been released by RGoB.

·         During 13th EJG meeting, held on 18th Sep’14 at New Delhi, it emerged that  RGoB desires to fast track the project, Foreign Secretary, GoI expressed  commitment  to develop hydro projects in Bhutan but difficulty in fixing  timeline for this project as at present, it would not be possible to allocate any fund for infrastructure developments.

·         A meeting to review the status of DPRs of Hydro electric Project was held on 29.10.2014 under the chairmanship of chairman, CWC and member (Hydro) in CEA.

·         The quantities of C & J Works have been submitted to CEA on 20.11.14 for their checking. Approval on Quantities of C & J works of Sankosh HEP 2585 MW has been granted by Thermal Civil Design (TCD division) of CEA on 5th Feb’15. Reply of the comments on Construction Methodology aspects of Sankosh HEP 2585 MW has been sent to CEA/CWC on 27th Feb’15.

·         In Sankosh HEP, Site specific seismic study as per new guidelines of NCSDP (National Committee on Seismic Design Parameters) is to be conducted as  finalized  during meeting with Member (Hydro),CEA on 19.09.15 . The study shall be completed by March, 2016.

·         MoU with IIT Roorkee for site specific seismic study has been signed on 17.11.15. The report as submitted by IIT Roorkee has been submitted to CEA on 30.03.16 for their comments.

·         Out of `100.54 Million towards updation of DPR of Bunakha HEP and Sankosh HEP, part payment of ` 41.4 Million has been released so far by DG, Department of Hydropower & Power Systems MoEA, RGoB, Thimphu.

·         Revised cost estimate at April, 2016 PL submitted to CWC, New Delhi on 08.06.2016 for checking and approval.

·         THDCIL made a presentation on Site Specific Report in the meeting of the National Committee on Seismic Design Parameters (NCSDP) held on 23.06.2016 at CWC, New Delhi for approval of site design parameters.

·         Site specific studies approved by CWC.

·         Reply on comments of Constructional methodology submitted to CWC on 05.07.2016 and 25.7.2016.

·         Construction Methodology cleared on 12.08.2016.

·         Civil Cost Estimate cleared on 26.08.2016.

·         Phasing of Civil cost and construction schedule cleared by TCD, CEA on 09.09.2016.

·         Phasing of EM works cleared by HPA, CEA on 12.09.2016.

·         Power evacuation cleared by PSP& AD, CEA on 12.09.2016.

·         IDC and Tariff cleared by CEA on 15.09.2016.

·         Presentation for TEC was made by THDCIL at CEA on 20.09.2016.The approval  for DPR is accorded by CEA for Sankosh HEP (2585 MW) on 21.11.2016.

·         The suggestions of CEA, CWC, GSI and CSMRS are being incorporated in final DPR for onward submission of requisite nos. of final updated DPRs to CEA. Tender for printing of final updated DPR is floated. 


Bunakha HEP (180 MW):

·         After getting clearance in EJG meeting held on 22nd March-10 at New Delhi, work for DPR preparation was taken up.

·         DPR of Bunakha HEP (180MW) has been completed and submitted to CEA and CWC on 30th Aug-11.

·         DPR now stands techno economically concurred by CEA. A formal TEC communication has been issued by CEA.

·         Final DPR incorporating all the suggestions of CEA/CWC/GSI has been submitted to RGoB on 21st Nov-13.

·         Bunakha HE Project is to be executed in JV mode. All the stake holders have signed the finalized cost sharing mechanism agreed for Bunakha. Ministry of Power had desired a draft Cabinet Note on Bunakha HEP for approval of grant and subsidy, which was submitted by THDCIL on 30.10.2013.

As per decision of Working Group, the work of preparation of estimates & tender documents for pre-construction work is being done by the project & as soon as the clearance from the two Govts is available. Estimate for the same has been prepared.


·         Work of SIA study for Bhunakha HEP has been awarded to National Statistical Bureau (NSB), Bhutan. Final report of SIA study has been received from NSB on 19th Dec’13 and the same has been submitted to DHPS, RGoB on 20th Dec’13.


·         Final DPR submitted to RGoB has been approved by the cabinet of RGoB on 18.02.14.

·         12th EJG meeting was held in Thimpu on 12.03.14.During meeting following issues on JV agreement were discussed.

Ø  The umbrella agreement for the execution of JV projects has been approved by the GOI Cabinet. However, GoI cabinet approval is necessary on case to case basis for committing funds in respect of any hydro project.


Ø MEA, GoI has already secured Cabinet clearance for Kholonchhu and second in line is Bunakha for seeking cabinet to go-ahead.


·         EIA- EMP and Social Impact Assessment study reports for Bunakha HEP has been submitted to National Environment Commission (NEC) by Department of Hydropower and Power Systems (DHPS) for processing Environmental clearance of Bunakha HEP.

·         After the presentation on EIA-EMP studies of Bunakha HEP before NEC, Bhutan on 27.03.2014 followed by a site visit on 31.03.2014, minutes of discussions and

comments on EIA-EMP have been received on 24.04.2014. Reply of these comments is being prepared for necessary incorporation in the report and submitting the final EIA-EMP report of Bunakha to NEC, RGoB.


Ø  Another meeting was called by National Environment Commission, Bhutan on 25.04.2014 in Thimphu, where THDCIL along with other stakeholders of RGoB participated to discuss the environment clearance related issues. All the issues regarding environment clearance were discussed. THDCIL requested NEC to expedite the clearance of the project.

Ø  Regarding forest clearance, a site visit was made on 30.04.2014 by the officials of forest department of RGoB along with DGPC and THDClL officials.

·         Finalization of draft cabinet note and interest subsidy required for Bunakha HEP are under consideration at MEA, MoP. In a meeting held in May 2014, THDCIL informed MoP that Cost Sharing Mechanism has been approved by EJG in its 10th meeting as finalized by CEA and included in the IG agreement signed between two Govts.

·         More clarifications on the issue of interest subsidy and funding of Associated Transmission System (ATS) was desired by CEA and the same have been submitted to CEA on 19.05.14. A meeting on Associated Transmission System (ATS) of various hydro electric projects in Bhutan was held on 08.08.2014 under chairmanship of Member (Hydro), CEA. As per MOM dated 12.09.2014, the cost apportionment in ATS of Bunakha HEP has been reduced to ` 89.5 Cr from earlier `104.0 Cr.

·         The IG Agreement was signed in the month of April’14. Finalization of draft cabinet note and interest subsidy required for Bunakha HEP are under consideration at MEA, MoP. Once the cabinet gives its approval, a MoU will be signed for taking up the preconstruction activities for Bunakha HEP between the two JV partners i.e. THDCIL & DGPC.


·         During the process of Environment Clearance, National Environment Commission (NEC) of RGoB had raised few queries/comments on Bunakha EIA-EMP-SIA report after the presentation by THDC on 27/03/2014 and a joint visit to project site. The comments issued by NEC have been forwarded to all concerned departments / consultants and replies thereof are being prepared for timely submission.

·         THDCIL Bhutan Unit organized a visit of ICFRE & Fish experts to Bhutan and arranged meetings with all above concerned RGoB departments for consultation on different issues raised by NEC, during 12-19 July-2014. During the visit Fish study was conducted in Wangchu River in Bunakha HEP project area u/s & d/s of proposed Bunakha dam site.  Incorporation of the outcome of recent Bunakha site visit by ICFRE and Fishery Experts in EIA-EMP report of Bunakha HEP and expected to be completed by Dec’14. Thereafter, the final EIA/ EMP report will be submitted to NEC.

·         Clearance of Forest, Public, Culture and Dzongkha are pending for field verification survey. For this ChukhaDzongkhag Administration has already submitted the cost estimate of about Nu. 7.0 Lacs.

·         Equity contribution by downstream projects i.e. Chukha & Tala HEP’s in respect of Bunakha HEP was discussed during 13th EJG meeting. The equity contribution of cost apportioned to the D/s projects owned by RGoB to be provided by Gol as grant shall be further discussed at the Ambassador level meeting in Thimphu, Bhutan.

·         Final EIA & EMP report for Bunaka HEP has been sent to Department of Hydropower & Power Systems MoEA, RGoB, Thimphu on 28.01.2015.

·         Since site activities for present mandate has been completed, Bhutan Office of THDCIL has been closed from 30th Nov’14.

·         The original cost estimate of Bunakha HEP was at May 2013 PL, Updation at April’15 has been approved by CEA on 07.08.15.

·         In Bunakha HEP, conditional clearance for Site specific seismic study was given by CWC that as per new guidelines of NCSDP, site specific studies is to be conducted within one year. This study got completed through IIT, Roorkee and submitted to CWC on 30.03.2016.

·         THDCIL made a presentation on Site Specific Report in the meeting of the National Committee on Seismic Design Parameters (NCSDP) held on 23.06.2016 at CWC, New Delhi for approval of site design parameters.

·         Site specific studies approved by CWC. MEQ studies have to be taken up.

·         Discussion at various levels at MOP and MEA, GOI are being held for implementation of Bunakha HEP.

  • Meeting on “implementation of HEPS in Bhutan in JV Mode” under the chairmanship of Secretary (Power) were convened at New Delhi on 13.10.2016. It was informed in the meeting that the tariff of Projects in JV Mode in Bhutan is to be worked out considering 30 yrs, 35 yrs and 50 yrs of project life to see the projects viability. The work on this aspect is in progress.
  • The tariffs of Bunakha HEP considering 30 yrs, 35 yrs and 50 yrs of project life along with the subsidies required to make the project viable, are worked out and informed to MOP,GOI on 21.12.2016.



The expenditure incurred on New Projects till Jan-17 is ` 99.94Crs.



During Jan-17, an expenditure of ` 0.44 Cr. has been incurred on New Projects against budget estimate provision of ` 0.68 Cr.




  • An MoU was entered on 31st Dec-10 with Energy Department, GoUP for setting up of a coal based 1320 MW Super Thermal Power Station at Khurja in the State of Uttar Pradesh. Power Purchase agreements have been signed for full capacity off take from the Plant.
  • Clearance for the construction of 275m high chimney for Khurja STPP has been obtained from Airports Authority of India vide letter dated 18th July’11.


PIB Approval

a)            For Pre-Investment:

·         PIB Approval for incurring expenditure of ` 585.82 Cr. towards Pre-Investment activities (like land acquisition, rerouting of National High way etc.) has been accorded by GOI on 20.11.15.

·         Status of as on date head wise expenditure PIB approval on 20.11.2015 for ` 585.82 Cr. and planned expenditure for 2016-17 is as follows:

(in ` Crs.)

Sl. No.


Approval as per PIB

Expenditure incurred till date

Balance Planned Expenditure  for 2016-17







1201 acre Land for plant





89 acre land Re-routing NH-91


The matter being pursued with NHAI.



123 acres land for rail and water corridor




Fencing, leveling & establishment for secure possession of land





DPR & Re-routing of National High way (NH-91)

·         Pre-feasibility report & DPR for the Project has been prepared by Consultant     M/s NTPC. The layout and DPR of the project has been revised for the implementation 2x660MW project with provision of 3rd unit of 660MW capacity in future subsequent to re-routing of NH-91.

  • On 29th Oct’13, NHAI conveyed their “in-principle” consent to re-route the NH-91. The cost for re-routing the highway including cost of land etc. shall be borne by THDCIL from project funds.
  • Proposed expenditure in PIB for shifting of NH 91 for Land Acquisition works (89 Acre land required) is  `110.64 Crore.
  • Total expenditure to be made including construction of realigned NH91 is ` 194.54 Crores.

·         Regarding diversion of NH-91, NHAI is principally agreed to prepare DPR, Appoint a consultant and finally shift the NH91. The joint site visit  with the consultant of NHAI was conducted in 1st week of November 2016 and has taken up the work of preparation of DPR.


Land Transfer, secure possession & establishment:

Land Transfer:

·         Physical possession of total 1200.843 Acres land including Gram Sabha land has been obtained. A sum of ` 310.36 Cr. has been released by THDCIL against compensation for Land. Out of this, ` 40 Crs. released to UPSIDC, ` 20 Crs. to SLAO and a sum of ` 250.36 Cr as Ex-gratia for land has been paid to farmers against total payment ` 272.77 Cr.


Secure Possession:

·        Installation of Pillars including Fencing for secured possession of the land is almost complete.



·         Site office (prefabricated structure) has been completed. The office was shifted on 1st October 2016 and also functioning. Beside solar power, power supply from. UPPCL has also been arranged.

·         Construction of 03 helipads is complete. The Pylon for foundation stone, Approach road (with black topping) to inauguration site and installation of sign

boards are ready and site is ready for inauguration.

·         For construction of Transit Camp/ Guest House, the excavation for foundation completed. The concreting in all column upto plinth beam is completed. The earth filling in structure upto ground level has been also completed. Work suffered due to labour problem due to demonetization.


Rail and water corridor

Coal Transportation and Railway Siding

·         Coal transportation and Railway siding studies have been carried out through Consultants M/s RITES. Final Feasibility report of the Railway Siding for Khurja STPP has been approved “In Principle” by Northern Central Railway vide letter 11th March, 15. M/s RITES has also visited the site on 17.08.2016. Survey work started at site by RITES.


Coal Block allocation:

·      Ministry of Coal has allocated Amelia Coal Mine to THDCIL on 29.08.16. The Allotment Agreement between Ministry of Coal & THDC India Ltd has been signed on 15.12.16.Target achieved in Excellent rating in Dec-16.

·      Allotment Order of Amelia Coal Mine to THDCIL has also been issued on 17.01.2017, after payment for Rs. 33.10 Crs as first installment of the upfront amount, Rs. 4.5 Crs as fixed amount and submission of Bank Guarantee  for Rs. 250.99 Crs. against Performance Security.


Finalization of alignment of water corridor:

  • Upper Ganga Canal has been identified as an adequate source of water to meet the water requirement of the plant. Formal water commitment letter for providing 53 cusec water from Upper Ganga Canal has been issued by Water Resources Department, GoUP on dated 12th June’14.


  • UPID has submitted the proposal of supply of 53 cusec water through Mundakhera distributory by gravity upto the project site. The proposals is found feasible as in this scheme water will flow through gravity from Upper Ganga Canal to Project site and no land acquisition will be required.


·         The proposal submitted by UP ID for an amount of Rs 117.83 crore was checked  and observations were put up to UP ID. The revised/ corrected proposal is awaited.


Environmental Clearance:

  • Based on PFR prepared by NTPC, Terms of References (ToR) were prescribed by MoEF on 27/10/2011 for the preparation of EIA/EMP report.
  • MoEF has also amended the layout of project, utilizing entire plot of 1,200 acres land, with future expansion of 3rd unit of 660MW.


·         Revised EIA/EMP report has been submitted to UP State Pollution Control Board

on 19th May-15 for conducting Public hearing. UP State Pollution Control Board on 26th June-15 issued memo for conducting Public hearing on 1st Aug-15 which has been successfully conducted.

·         EIA/EMP report incorporating comments of Public Hearing was submitted to MoEF on 6th October, 2015, for consideration of Environmental Clearance.

·         Application of THDCIL for Environmental Clearance has not been considered by MoEF due to non availability of Coal Linkage.

·         After incorporation of revised norms of MoEF, THDCIL has already uploaded/submitted updated EIA report with pre-monsoon 2016 baseline data on MoEF website for granting Environmental Clearance to Khurja STPP.

·         Presentation before Environment Appraisal Committee (EAC) of MoEF & CC has been also held on 28th Dec-16. Further clarification on comments/query received from EAC has been incorporated in presentation. It is expected that again presentation before EAC shall be held during Feb-17. 



Court case filed by one PAF delaying further disbursement of ex-gratia & signing of Lease deed.

·         Physical possession of entire 1200.843 acres land taken in all affected villages and a sum of ` 250.36 Cr as Ex-gratia for land has been paid to farmers against total payment ` 272.77 Cr.

·         Further disbursement to farmers is held up due to court case filed by one PAF named Mr. Kamal Singh & others in Allahabad High court. Due to above issue, work of signing of Lease deed of land is also delayed as the same can only be done after complete payment to UPSIDC/ farmers for entire land.

·         A high level committee is constituted under Chief Secretary U.P. Govt to enquire about the procedure of disbursement of ex gratia and anomalies in it. The report of committee is to be given in 03 months time.

·         Next date of hearing is 04.04.2017.



Expenditure incurred on the project by the corporation till Jan-17 is ` 371.71 Cr.





·         A tripartite agreement amongst SECI, Kerala State Electricity Board and THDCIL was signed on 31.03.2015 for development of 50 MW Solar project in Distt. Kasaragod, Kerala. 


·         Possession of land for setting up of 50 MW Solar PV Project in Paivalike village of Kasaragod distt., Kerala has been taken over by Renewable Power Corporation of Kerala Ltd. (RPCKL), which is a joint venture of SECI and KSEB. NIT for selection of EPC contractor for the proposed 50 MW solar power project was issued on 28.06.2016 by SECI (Project Management Consultants).


·         Site Visit of the proposed 50 MW Solar power Project in Paivalike village of Kasaragod distt., Kerala has been undertaken by prospective bidders on 28.07.2016.


·         Pre-Bid meeting with prospective bidders has been held at Kasaragod on 29.07.2016. In the pre-bid meeting, the prospective bidders raised a number of queries, which were addressed by SECI.


·         Ministry of New & Renewable Energy (MNRE) vide its letter no 30/11/2014-15/NSM (Vol. IV) dated 18.10.2016 has conveyed its “in-principle approval” for grant of subsidy in the form of Viability Gap Funding (VGF) support of ` 25 crore, i.e. @ ` 50 Lakh / MW under CPSU scheme of MNRE for setting up of 50 MW grid connected solar PV power plant at Kasaragod, Kerala.


·         Techno-commercial bids for the Project were opened on 23.12.2016. 06 bidders have submitted their bids which are under evaluation by SECI. SECI is expected to submit its recommendations for award of work by Feb’ 17.


·         Award of the EPC contract is expected by March 2017.



·         After the successful commission of its 1st Wind Power Project of 50 MW at Patan Wind Farm at Gujarat, THDCIL has awarded Engineering, Procurement & Construction (EPC) Contract of 63 MW capacity at Kandorna & Bhanwad Wind Farm sites, Gujarat to M/s Suzlon Energy Limited, Ahmedabad on 28.11.2016. The contract includes comprehensive operation and maintenance (O&M) for 20 years.

·         The period of completion is six months including 02 months of stabilization period from the effective date of contract i.e. from 28.11.2016.

·         Scheduled Commissioning     :           28.03.2017

Scheduled Completion             :           28.05.2017


·         Micro siting Plan of the project has been approved by THDC on 09.12.2016.


·         Developer Permission and Transfer Permission for the project issued by Gujarat Energy Development Agency (GEDA) on 27.12.2016 and 30.12.2016 respectively.


·         PPA for off take of entire power from the project signed with Gujarat Urja Vikas Nigam Limited (GUVNL) on 03.01.2017 at a fixed Tariff of Rs 4.19/kWh.


·         Civil works including excavation, PCC reinforcement, etc are undergoing at site. Receipt of WTG equipments/ materials is underway at site.

·         Status of project activities is as follows:


Works Progress

(as on 31.01.2017)

Soil Testing



15; (10 WIP)



Foundation casting





05; (06 WIP)




Consultancy & Business Development :


·         OHPC Limited: The Pre-Feasibility Report (PFR) for 3 Pumped Storage Schemes in the existing Power Stations under Odisha Hydro Power Corporation Ltd. (OHPCL) has been completed and final reports submitted.


·         NWDA: THDCIL has completed Power Potential and E&M Studies for 02 SHPs viz.  Bhugad and Khargihill Hydro Electric Project on Damanganga – Pinjal Link Project and final reports submitted to National Water Development Agency, Govt. of India. All the comments received from CEA on the reports have also been replied.


·         National Water Development Agency (NWDA) has awarded the consultancy work for carrying out the Power Potential and E&M Studies in respect of six Hydel projects proposed under Par–Tapi–Narmada link project. Power Potential Studies and E&M studies have been completed. Final reports of studies have been submitted. All the comments received from CEA on the reports have also been replied.


·         CSPGCL : Chattisgarh State Power Generation Company Limited (CSPGCL), an undertaking of Govt. of Chhattisgarh, entrusted THDCIL on 09.07.15 the task of preparation of Report for Indravati River Basin on an integrated basin concept considering 7 HEPs namely Matnar HEP, Bodhghat HEP, Kutru-I & II, Nagur-I & II, Kotri and Bhopalpatnam.


An agreement between THDCIL and CSPGCL was signed on 29.09.2015 and required data have been received from CSPGCL for the study.


Draft reports of all the HEPs have been submitted to CSPGCL.


A RA bill for an amount of ` 24 lakh towards consultancy fee has been raised on 17.01.2017 to CSPGCL for the work done so far as per MOU.


·         MOU WITH “SHRI MATA VAISHNO DEVI SHRINE BOARD”: THDCIL signed an MOU with Shri Mata Vaishno Devi ji Shrine Board (SMVDSB) on 6th June‘2011 for “Design and Engineering measures for stabilization of vulnerable zones between Katra and Shri Mata Vaishno Devi ji Shrine”. After reconnaissance survey, 33 prone locations were identified. Topographic survey and geotechnical investigations were conducted and measures were designed. Five out of thirty three locations have now been treated and award of work for other locations are under process. Meanwhile, in March, 2016 a landslide occurred near Bhawan area that damaged track approaching holy cave and Bhawan area. THDC has visited site and subsequently issued construction drawings for treatment of damaged slope and track. Construction work for this location has almost completed except cable anchors. An expression of interest was floated by the Shrine Board to know the advancement in the slope protection measures. Seven parties shown the interest and presented their measures on 9 Dec 2016 before the shrine board and THDCIL officers at Katra. The EOI has been scrutinized. The tender documents of 7 locations will be revised by incorporating the suggestions of these parties shortly.


·         MOU WITH “UKPWD” FOR STABLIZATION OF 20 VULNARABLE CHRONIC SLIDE ZONES: On the request of GoUK, THDCIL has signed an MOU on 11.09.2013 with PWD for providing technical services as a consultant in designing and engineering measures for stabilization of vulnerable chronic slide zones on the various roads of Uttarakhand under PWD.

Twenty identified chronic slide are to be treated. Detailed project report for 16 locations have already been submitted. Actual works on 5 locations have already been started. Tendering for another 11 locations is under process by PWD Uttarakhand. The funding of 2 locations will be done by national disaster mitigation authority. A presentation of DPR of two location will be made before NDMA by THDC on 15th December. The recommendations of the TEC members have been received. DPR’s of these 2 locations have been found as per NDMA guide line and accepted with some minor modifications. Revised DPR’s have been submitted on 30 Dec 2016 to release the fund by NDMA to Uttarakhand Government.


·         MOU WITH “UKPWD” FOR UNDERGROUND PARKING AT MUSSOORIE & NAINITAL AND RAJ BHAWAN LANDSLIDE ZONE AT NAINITAL”: THDCIL signed an MOU on 26.06.2014 with PWD, GoUK for providing technical services as a consultant in designing and engineering measures for underground parking at Mussoorie and Nainital & landslide zone of Raj Bhawan, Nainital. Work of geotechnical investigation for underground parking for 100 vehicles at Mussoorie is kept on hold as advised by PWD.


Works on Rajbhawan slope at Nainital for immediate measures has been awarded & work is in progress. Detailed project report for long term measures (phase-2 works) has been submitted.


The consultancy amount for this work is ` 441 Lacs.

·         CONSULTANCY SERVICES TO SHRI AMARNATH SHRINE BOARD FOR SLOPE STABILIZATION NEAR HOLY CAVE”: Modalities for signing of MoU for providing consultancy services to Shri AmarnathJi Shrine Board for stabilizing slide prone area near cave are under process. Revised MoU was submitted to Chief Engineer, PWD, Jammu & Kashmir on 22.12.15 as per direction of Shrine Board. MOU with PWD has been signed on 28.12.2016 at Jammu. Invoice for the advance payment has been issued. Work on design and engineering will be started after receiving the payment.


·         Vetting of the 5  locations of slope stabilization DPR to be submitted by M/s WAPCOS to the Government of Uttarakhand.

The contract between THDCIL and Programme Implementation Unit (PIU), Uttarakhand is to be signed shortly for vetting of the DPR and tender documents for the slope stabilization of these locations in Uttarakhand.


The consultancy amount for this work is ` 10.70Lacs.






1.     Asena Quarry

1.   Continued support of Distt. Administration will also be required for hindrance free operation and transportation of material to Project site.


B. Chopra Dumping area:

1.   Pending diversion of 4.67 Ha. forest Land

All desired documents has been uploaded on MoEF website on 16.11.16 for IInd Stage clearance. G.O. sparing Chopra Land for dumping is to be issued by GoUK.


2.   Law & Order issue at Chopra village (Stoppage of muck dumping):

Stoppage of muck dumping in Chopra muck disposal still continue since 30.07.2016. Intervention of local administration to restart the muck dumping activity is urgently required.


3.     Permission for alternate Muck Dumping Area at Koti

Permission from DM Tehri and NOC from state Pollution Control Board is pending.

Permission from DM Tehri for raising of Helipad area with muck dumping is pending.



·         Regular support of Distt. Administration is required to prevent stoppage of work by the local people.



·         During a meeting taken by JS (Hydro), MoP on 10.08.2016, Secretary (Irrigation), GoUK assured that after taking up the issue with GSI, permission will be issued by 02.09.2016 to fill the reservoir upto RL 828m.

·         GSI has submitted the report to Chief Engineer (Irrigation) on 16.09.2016 with the recommendation that “The water level of Tehri Dam may be raised upto RL 828m”.

·         Director (Technical), THDCIL vide letter dtd. 22.09.2016 requested Chief Secretary, GoUK for according permission to fill the reservoir up to RL 828m.

·         It is learnt that proposal to grant permission has been recommended by Chief Secretary and has been sent to GoUK in Irrigation Department for seeking approval of Chief Minister.

·         As desired during a meeting taken by JS (Hydro), MoP on 13.10.2016, a Draft Appraisal Note on “Permission to fill Tehri Reservoir up to EL 830m i.e. Full Reservoir Level (FRL)”  has been sent to MoP on 29.10.2016 for perusal of Hon’ble Minister of Power.

·         Formal permission of filling of reservoir upto EL 828m is awaited from GoUK.





1. Power Evacuation arrangement from the Project:

·         PPA between THDCIL & UPPCL for 24MW has been signed on 05.12.2016. As per PPA, arrangement for power evacuation is to be done by UPPTCL.

·         GoUP may be requested for arranging of power evacuation system before Feb.’2018.

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