Nepalese Power System and Nepal Electricity Authority. Lila Nath Bhattarai Deputy Managing Director Engineering Services Directorate NEA

Transcription

1 Nepalese Power System and Nepal Electricity Authority Lila Nath Bhattarai Deputy Managing Director Engineering Services Directorate NEA

2 NEPALESE POWER SYSTEM Early start but very slow pace of development Hydro based (mostly R-o-R) Installed capacity : 812 MW Hydro : 769 & Thermal : 53 MW Seasonal Storage Plant PROR ROR : 92MW : 305 MW : 372MW Import from India : About 323 Mw Distinct seasonal variation in generation Demand supply mismatch Access to Electricity: About 60% of the population Transmission lines bottleneck Long and poorly designed distribution line: Poor System Performance : Low LF and high Losses

3 Modalities of Hydropower Development NEA/GoN own Funding GoN/NEA (Multilateral and Bilateral Funding) Public Private Partnershi Foreign Direct Investment National Private Funding

4 Tanakpur 35 MW Nepalgunj 8 MW Total Import Capacity (Present ) = 323 MW Ramnagar 28 MW Raxaul 12 MW Muzaffarpur 90 MW ( Jaleswor 12 MW Bisanpur (8MW) & Rajbiraj 5 MW Kataiya MW

5 Yearly Production (MW) Cumulative Production and Forecast (MW) HYDROPOWER DEVELOPMENT IN NEPAL Year Yearly Prod. (MW) Cumulative Prod. (MW) Forecast (MW)

6 Installed Capacity (MW) 250 YEARLY HYDROPOWER GENERATION (MW) (During Last 10 years) Total MW Public Sector Private Sector

7 Hydro Projects Under Construction (NEA) Project Capaci ty (MW) Completion Financing Chameliya /15 GON, NEA & S/Korea KL III /15 GON, NEA U. Trishuli 3A /17 GON, NEA & China Rahughat /18 GON, NEA & India Upper Sheti 136

8 Hydro Projects Under Construction (NEA Subsidiary and Associated Companies) Project Capacity (MW) Completion Financing Upper Tamakoshi /17 UTHPCL- Local Fin. Tanahu Hydro /20 THPCL- ADB, Japan, NG Rasuwagadhi /19 RGHPCL- Local Fin. M. Bhotekoshi /19 BKHCL-Local Fin. Upper Sanjen /16 SHPCL-Local Fin. Sanjen /17 SHPCL-Local Fin Trishuli 3B /20 THPCL-Local Fin. Total =908.3 MW,

9 Major Hydro Projects Under Construction (IPPs) Project Upper Marsyangdi A Capacity (MW) Completio n Financing /17 FDI Mistri Khola /18 Local Financng Other IPP Prjects Total =286 MW, /14 to 2015/16 Local financing

10 Projects under construction Chameliya (30 MW) Rahughat (32 MW) Trishuli 3A (60 MW) Trishuli 3B (37 MW) Upper Sanjen (14.8 MW) Sanjen (42.5MW) Rasguwagadi (111MW) Upper Tamakoshi (456 MW) Upper Seti Storage (140MW) Kulekhani III (14 MW) Middle Bhotekoshi (102 MW)

11 Location of Study Projects Chainpur-Seti Upper Bheri Uttar Ganga Upper Modi A/Upper Modi Tamakoshi V HEP Dudhkoshi Storage HEP Upper Arun Andhi hola Tamor 11

12 Projects Studied by NEA and Transferred to to other Agencies / Companies Name of Projects MW Owner Remarks 1 Khimti Khola HEP 60 Himal Power Company Generating 2 Bhote Koshi HEP 36/45 Botekoshi Power Company Generating 3 Upper Karnali HEP 300 GMR PDA Concluded 4 Arun III HEP 402 Satlaj PDA Concluded 5 Kabeli HEP 32 Butwal Power Company Processing 6 Likhu HEP 51 Green Energy Processing 7 Tila Khola HEP 250 IPP Processing 8 Tamor Mewa HEP 101 Spark Hydro 9 Upper Raughat 40 IPP FS Study 10 Budigandaki Storage 1200 Budigandaki Development Board DD 11 Nalsaugad Storage 400 Nalsaugad Development Board DD 12

13 STUDY LEVEL Detailed Engineering Design Tamakoshi V HEP : 87 MW/419.30GWh Upper Arun HEP : 335 MW/2050GWh Dudhkoshi Storage HEP : 300 MW/1806 GWh Upper Modi A HEP : 42 MW/214.87GWh Upper Modi HEP : 18 MW/95.68GWh 13

14 STUDY LEVEL Feasibility Study Andhikhola Storage HEP : 180 MW/693GWh Tamor Storage HEP : 762 MW/ GWh Uttar Ganga Storage HEP : 300 MW/1297 GWh Upper Bheri HEP : 85 MW/452 GWh Chainpur Seti HEP : 140 MW/711 GWh 14

15 Projects transferred to other Agencies and Private Sectors Budigandaki Storage HEP (1200 MW) Bhotekoshi HEP (45 MW) Upper Karnali HEP (900 Mw) Khimti HEP (60 MW) Nalsyau gad Storage HEP (400 MW) Arun III HEP (900 MW)

16 Dudhkoshi Storage Hydroelectric Project Historical Background Project Identification : Identified in JICA Koshi Basin Master Plan Study (1995) as PROR project. Feasibility study (1998): Identified it as a Fast Track Storage Project in the Range of 300 MW. Reactivated by NEA in 2010 and carried out Review Study of the project It is one of the Prioritized Project (P1) of Nepal Government. Preparation of the project for implementation including Detailed Engineering Design and preparation of bidding document is in progress. ADB Grant for the ongoing study

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18 Particulars Details Catchment Area 4100 km 2 Total Sorage Volume Mm 3 Full Supply Level 580 masl Rated Net Head Installed Capacity Total Annual Energy Project Cost 249 m B/C Ratio 1.61 Relocation of Houses 300 MW 1806 GWh 690 Million USD 75 HH 18

19 Time Bound Action Plan Particulars Award of Contract 30 May, 2016 Commencement of services July 1, 2016 Project Preparation for Implementation Upgraded Feasibility Study Detailed Engineering Study : Oct, 2017 : Oct, 2018 EIA and SIA Study : Aug, 2018 Bidding Document Preparation : Dec, 2018 Remarks Decision on Implementation Modality Financial Closure Generation License Tendering and Contracting Construction and Completion : Mid of 2019 End of 2019 : Mid of 2019 : Mid of 2020 : Mid of 2020 to Mid of 2026

20 Upper Arun Background of the Project Particulars Details Remarks Project Identification Feasibility Study Financial Arrangement Development Model Koshi Basin Master Plan 1985 In 1991 by JV of MKC, Lahmeyer, TEPCO and NEPECON World Bank has provided Aid under PSRSHDP (Power Sector Reform and Sustainable Hydropower Development Project) Credit No.5728-HP Cabinet Decision : NEA to Construct the project under the Ownership of the Government Modality: NEA/GoN As PROR Project Grant Assistance from UNDP Ikhuwa Khola (30MW) to be developed as subsidiary to address social & public ambitions Modality :PPP 20

21 Particulars Catchment Area Firm Discharge Details 25,700 sq.km. Upper Arun 58.7 cumecs (Q95) Design Discharge cumecs ( Q70) Gross Head Installed Capacity Total Annual Energy Project Cost Upper Arun Hydroelectric ProjectU 492 m 335 MW 2050 GWh Milion USD ( year 2015) B/C Ratio 1.69 In order to share benefits of UAHEP with the local communities, Ikhuwa Khola is proposed to be developed through PPP mode Conceptualized to develop as an integrated part of UAHEP UAHEP 21

22 Ikhuwa Khola Hydroelectric Project- Features Based on Draft Feasibility Study Report of DoED Location: 8 km D/s of Upper Arun P/H Site and 5 km U/s of Arun-3 Headworks Power and Energy Net head = 601 m Discharge Q40 = 6.02 m3/s Installed Capacity = 30 MW Average Annual Energy of = GWh Estimated Cost (Excluding Taxes an Duties): NRs Billion B/C : 1.22 (Financial), 1.96 (Economic) Internal rate of Return : (Fianncial), (Economic) 22

23 Access Road to Powerhouse Site and Dam Site Total Length km Road km Road Tunnel km One Bridge over Arun River Access road originates from the highway leading to Kimathanka UNDER CONSTRUCTED ROAD FROM NUM TO KIMATHANKA 23

24 Cascade Project of Upper Tamakoshi HEP. Tailrace of Upper Tamakoshi feeds water to the headrace tunnel of Tamakoshi V Powerhouse and the cascade inter connection lie by the side of the access Road to Upper Tamakoshi. Short Transmission line of about 4 km length. Gross Head m 8.20 Km long Headrace Tunnel Under ground Powerhouse Installed Capacity -87 MW Annual Energy GWh Design Discharge 66 m3/s 24

25 Energy Generation And Fininancial Indicators Without Rolwaling With Rolwaling Gross Head m m Net Head m m Installed Capacity 87 MW 87 MW Annual Energy GWh GWh Dry Season Energy GWh GWh Wet Season Energy GWh GWh Project cost in US$ million Financial cost in NRs 13,660.3 million (with IDC) Rate of Return 14.00% B/C Ratio 1.17 Energy Cost Rs/ Kwh 3.19 / 3.81 (with / without Rolwaling) 25

26 Tamor Storage Hydroelectric Project Historical Background Project Identification : Identified in JICA Koshi Basin Master Plan Study (1995) as storage project. NEA carried out Preliminary study of the project by NEA in Survey Licensed issued to NEA on 2070/4/16 (2013/7/31for 200 MW and for full supply level 450 masl without affecting upstream projects ( Kabeli A and Hewa). NEA has carried out Alternative Study of Tamor Storage HEP inorder to optimize the available resources. The study concluded that optimized dam height at 208m is financially very attractive

27 Comparison of Alternatives Description Alternative 1 Alternative 2 Installed Capacity (MW) Full Supply Level (masl) Dry Season Energy, November to April (GWh) Wet Season Energy, May to October (GWh) Average Annual Energy (GWh) Base Cost (Million US$ Price Level) Specific Energy Cost as of the Year 2013 (Rs. per kwh) Benefit Cost Ratio(LRMC) /5/

28 Result of the Studies Tamor is the high sediment laden river. In case of Alternative -1, Rockfill Dam is not feasible. Concrete gravity with the provision of flushing arrangement might be marginally feasible. Alternative-2 is considered with rockfill dam with reservoir life of 50 years, FSL at 550 masl. Installed capacity of 762 MW is found to be optimum. Alternative -2 is technically feasible and economically viable. It is quite attractive. Minimum disturbance in the natural settings. Only about 250 households to be relocated. Capacity and annual energy would be increased to 762MW/3152 GWH from 252 MW/1109 GWH (Almost 3 times), however, cost would increase from 609 to 1217 million US$. Development at 450m FSL : Lost the opportunity to produce 510 MW of reliable power and energy of 2042 GWhr at the cost of 607 million US$. 6/5/

29 Upper Modi A HEP: Upper Scheme of Modi Cascade Located in Kaski district Installed Capacity - 42 MW Average Energy output GWh Design Discharge m 3 /sec Cost : 8747 Million NRs Specific energy cost: 4.5Rs/kWh ROE: 14% at 70:30 Gross Head = m Tunnel Length =5.9 km Surface Powerhouse Approximately 10 km of access road need to be constructed and some portion of the road need to be upgraded Short Transmission line of about 11.5 km length. 29

30 UPPER MODI HEP Cascade Development of Upper Modi A HEP No Headworks NEA obtained Survey License as agreed on Joint Development Agreement (JDA) between NEA and K- Water for the Cascade Development Feasibility Study in 2014 Headwork is located at Sayauli Bazar and Powerhouse is located near Birethanti Bazar Gross Head = 133 m Capacity =18 MW Energy : 95.7 GWh Transmission line : 5 km Cost : Mill US$ 30

31 Andhikhola Storage Hydroelectric Project Syangja District, Western Development Region Located : Syangja District, Western Development Region. Based on feasibility study (1998 A.D) Annual energy generation : 693 GWh. Installed capacity 180 MW. Gross Head: 307 m gross head. Dam height 157 m Tunnel Length:3395 m long Project cost : 374 million US$. Unit cost per Kilowatt : US $. Nearby the urban centre, short access road and short transmission line Obtained the license of the project on B.S 2071/06/02 31

32 Project Layout Kaligandaki A HEP Headworks Dam Axis of Andhikhola Storage HEP Andhikhola HEP (9.1 MW) Headworks Kaligandaki A HEP Powerhouse Powerhouse (option I) Option 1-H1P1 Option 2-H1P2 Powerhouse (option II) Layout of the project 32

33 FINAL WORDS Reservoir project to firm up power, make the excess energy marketable and to absorb the consequences of climate change Need to invest about 20 billion US$ in the next ten years for generation projects only to meet the national objective of generating 10,000 MW in the decade.. Different modalities of development of hydropower are required to be encouraged.

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