Importance of Small Hydro-Power in Developing Mountainous Country: A Case Study of Nepal Ram Hari Dhakal Civil / Hydropower Engineer, Vidhyut Utpadan

Transcription

1 Importance of Small Hydro-Power in Developing Mountainous Country: A Case Study of Nepal Ram Hari Dhakal Civil / Hydropower Engineer, Vidhyut Utpadan Company Limited (VUCL) Phone: , dhakalramhari@gmail.com

2 Contents Hydropower Development Status in Nepal Small Hydropower Status in World Contribution of Small HEP in Nepal Contribution of IPP: Small HEP Hydropower Under Construction Status in Nepal Why Small Hydropower Case Study Conclusion

3 Hydropower Development Status in Nepal Capacity in Each Consider Period First HEP-Pharping- 500KW in 1911 AD Cumulative Capacity Largest HEP- Kaligandaki -144MW in 2002 AD

4 Small Hydropower Status in World The plant having installed capacity less than 10MW is considered as SMALL HYDROPOWER Global share of renewable energy (%) SHP by Region Source: World Bank

5 Contribution of Small HEP in Nepal Total Contribution of Small HEP Comparison of Small HEP with Large in Considered Time Total Installed Capacity = 993 MW Among them: Small HEP (<10 MW): 67 projects with total capacity MW Small and Large HEP by Number Large HEP (>10 MW) : 20 projects with total capacity MW

6 Contribution of IPP: Small HEP Total Installed Capacity of Small Hydropower = MW Among them: Nepal Electricity Authority (NEA) : 7 Projects with total capacity 32.6 MW Independent Power Producer Association(IPP) : 67 Projects with total capacity MW NEA and IPP by Number of Projects NEA and IPP by Installed Capacity

7 Small HEP in Nepal

8 Hydropower Under Construction Status in Nepal Total Project Under Construction are 157 with capacity of 3060 MW Among them: Small HEP (<10 MW): 89 with total capacity of MW Large HEP (>10 MW) : 68 with total capacity of MW All these projects are planned to be finished and expected to be online within 2024 All these projects are constructing by IPP Large and Small HEP by Number of Projects Large and Small HEP by Installed Capacity

9 Why Small Hydropower SHP is a cost effective and sustainable source of energy: Simple and less capital cost for construction work. The cost of electricity generation is almost inflation free. The development period is short and the schemes give financial returns quickly. Low operational cost, easy maintenance and reliable power supply. Mature technology and small investment risk Longer life span.

10 Why Small Hydropower Development of rural and remote areas: Streams and rivers available in remote and hilly areas which are sources for development of small hydro. SHP development provides electricity, transportation, communication links and economy to such rural areas. Decentralized development. Obvious social benefits to developing local economy and improving material spiritual life for local residence. Proper utilization of water resources: various streams and rivers can safely provide energy to run a small hydro electric plant. Small stream scatter all around the mountain can be used for electricity generation

11 Why Small Hydropower Development of Small Hydropower Project help: to increase the capacity of the local/national contractor to increase the capacity of technical and non technical manpower to increase the capacity and confidence of financing institutions to increase the capacity building of local consulting forms to provide the opportunity for local labor to work with in country to prepare the developer to go for large projects

12 Case Study

13 Case Study: Introduction of Project Project Location Installed Capacity Rated Net Head Siuri Khola HEP Lamjung, Nepal 5000kW m Annual Energy Generation GWh Project Start Year 2008 Project Complete Year 2012

14 Case Study: Introduction of Project Due to the high head and low discharge project Structure are small and easy for construction Head-works Power House

15 Case Study: Local Manpower Approx. 150 Worker works continuously for 3 year (25% of those are Local) Out of 28 full time staff working in plant during operation, 14 are form local.

16 Case Study: Contractors and Materials Cement (Approx ton): manufactured form national industries Reinforcement (Approx. 150 Ton): manufactured form national industries Civil Contractor was Local Fabrication and erection of penstock pipe was done by Nepalese contractor Transmission line construction was done by Nepalese Contractor

17 Case Study: Social Responsibility Two Villages directly connected with project access road (approx. 11km ) and access road passes near by three villages Road is constructed to up to one village form the project access road (approx. 3KM) Electricity for Local People (2 villages approx. 100 house holds) Help for School Construction and Renovation Provide the teacher for local school Help for different local clubs and groups School With the help of Project Happy people after Road reached at village

18 Case Study: Limitations (Specially in Nepal) Availability of technical and non technical manpower Lack of labors Unreasonable Demands from Locals Security Problems Management cost (almost is similar with big projects) Conflict of interest

19 Conclusion There is significant contribution of Small HEP (25%) in the system till now It will be considerable contribution of Small HEP(13%) in upcoming projects with Per MW cost of small HEP might be higher than large HEP project, but it has more other economic benefits for the country. Despite of a lots of advantages, there are not any small hydropower projects in west part of Nepal. It is better to develop the Small HEP parallel with Large project to get those benefits.

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