Topic
electricity
3 guides on electricity.
Finance
Rooftop solar in India — payback math after PM Surya Ghar
PM Surya Ghar Yojana subsidises 30-40% of rooftop solar. A 3 kW system costs ₹1.6 lakh net and pays back in ~5 years at ₹8/unit; panels last 25 years.
2 min read
Daily
Geyser vs solar water heater — when does solar pay back?
A 100-LPD solar water heater costs ₹22,000-30,000 and saves ₹600-900/month. Here is the realistic payback and where geysers still win.
2 min read
Daily
Cooler vs AC — running cost in Indian summer
Air coolers cost ₹150/month to run, ACs cost ₹1,500-3,000. Here is when a cooler is enough, when AC pays off, and the inverter-vs-non-inverter math.
2 min read