Solar insights
What we have learned about choosing, sizing, buying and maintaining solar in India.
Projects
India has 637 GW of residential rooftop potential. It has built about 15 GW of it
A CEEW study put India's residential rooftop solar technical potential at 637 GW across more than 25 crore households. Against that, PM Surya Ghar has commissioned roughly 14.8 GW — a gap that reframes what 'large' means in rooftop solar.
23 August 2026
Regulations
What the PM Surya Ghar subsidy actually pays in 2026 — and where it stops
The Central Financial Assistance is ₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 for 3 kW or above. The cap at 3 kW is the part households most often misunderstand, and it changes how a larger system should be sized.
23 August 2026
Regulations
The 5.75% solar loan is not a fixed rate — it is the repo rate plus 50 basis points
Collateral-free loans of up to ₹2 lakh are available for rooftop solar under PM Surya Ghar at the repo rate plus 0.50 per cent, which stood at 5.75 per cent. Because it is linked to the repo, the number moves — and households should plan on that.
23 August 2026
Technology / Updates
Is a 5 kW Solar System Right for Your Home?
What 5 kW actually describes, what a rooftop system is made of, and the site and usage factors that decide whether this size suits your home.
18 August 2026