Feasibility study on Grid connected PV system in Nepal
Chianese, D., Pittet, D., Shrestha, J.N., Sharma, D., Zahnd, A., Sanjel, N., Shah, M. and Uphadyaya, M. (2009) Feasibility study on Grid connected PV system in Nepal. In: International Conference on Renewable Energy Technology for Sustainable Development RETSUD – 09, 12 - 14 November, Kathmandu
The climatic conditions of Nepal are ideal for solar energy technology. Indeed, stand alone PV plants are used in remote areas, grid connected systems however are not yet well enough considered. The power supply system is suffering from lack of production forcing the distributor to practice regular load shedding. Therefore, using the energy production potential of grid connected PV plants could substantially contribute in making the national power supply system more diversified and independent, and more ecologically and economically sustainable. The aim of the project (October 2008 – December 2009) was to conduct a feasibility study on PV grid connected plants in the Kathmandu Valley, Nepal, and the consequent development and delivery of an educational program. Nepal benefits from extremely favorable climatic conditions for the use of PV technology with grid connected plants. A south oriented 30° tilted photovoltaic installation can produce 1700 kWh/kWp/Year. The same installation can produce 2300kWh/kWp/Year if installed on a two-axes sun tracker. The initial investment is high but is paid off by a high production and by a cost of 19.6NRs/kWh of the final energy that is by far less than the one produced by the systems at use in households during load shedding periods (inverter-batteries: 54.0NRs/kWh; genset: 55.4 NRs/kWh), or by thermal power plant (ca. 30NRs/kWh). PV energy can contribute to the reduction at all times of the year of the country’s energy production deficit.
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