In the present work, a techno-economic investigation of an off-grid hybrid renewable energy system (HRES) comprising of Solar Photovoltaic Panels and Wind Turbines as main supply with Battery as back-up has been conducted for electrification of a grocery shop located at Majhitar area of Sikkim, India. RAMP software has been used to generate accurate demand data in a short period of time for the shop located in an unreliable electricity area. The generated load data has been simulated using HOMER PRO software on a minute-by-minute basis for determination of net present cost. It was observed that the PV-Battery based system came out to be the best system with an Levelized Cost of Energy of 0.273 US $/kWh while the Wind-Battery based system came out to be the worst system. None of the systems were found to be competitive to existing grid prices. However, it has been proposed that with subsidies or with further reduction in PV Panel prices the cost of PV-Battery systems may become competitive with grid prices in future.

Topics
Batteries, Renewable energy, Solar panels, Wind turbines, Public policy and governance
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