Powering primary healthcare centres with clean energy sources | Renewable Energy and Environmental Sustainability

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Table 7

Comparative costs and emissions of stand-alone power supply options (generator versus solar system).

Configuration	PV capacity (kW)	Generator capacity (kW)	Number of batteries (6 V/225 Ah)	Converter capacity (kW)	Initial capital (€)	Annual generator usage (h)	Annual quantity of diesel (L)	Total net present cost (€) for 25 yr	Cost of energy (€/kWh)	Renewable fraction	CO₂ emission (t/yr)
Generator only	0	2.5	0	0	2100	8760	3558	85 528	2.31	0.00	9.371
PV+ Battery	10	0	10	2	19 379	0	0	21 478	0.58	1.00	0.000

*The increase in diesel cost, opportunity cost of procurement of diesel in the area, down time of diesel generator (DG) sets for maintenance and repair, and benefits carbon credit accruing to solar PV plants are not factored in the calculation.

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