A deep technical comparison between N-Type TopCon and P-Type Mono PERC technology regarding temperature coefficient, degradation, and price-to-performance.
1. Understanding the Economics of Modern Rooftop Solar
With electricity tariffs increasing across domestic and commercial brackets by 3% to 5% annually, investing in rooftop solar PV has transitioned from a purely environmental decision to one of the highest-yielding financial assets available to Indian property owners.
A standard 3 kW residential solar installation generates approximately 360 to 420 units of clean electricity per month. At an average grid tariff of ₹7.50 per unit, this represents monthly savings of ₹2,700 to ₹3,150, totaling over ₹35,000 every single year.
2. Claiming Central Subsidies via PM Surya Ghar
The Ministry of New and Renewable Energy (MNRE) facilitates direct cash benefit transfers (DBT) to homeowners upon joint commissioning:
- 1 kW System: ₹30,000 direct bank subsidy.
- 2 kW System: ₹60,000 direct bank subsidy.
- 3 kW & Above: ₹78,000 maximum direct bank subsidy.
Subsidies are only approved if you use ALMM/DCR-compliant modules installed by an officially registered vendor like Solpure Energy. Solpure coordinates the technical joint inspection and online portal submission for 100% subsidy guarantee.
3. Net Metering: Exporting Surplus Units to the Grid
During bright afternoon hours when your solar system produces more electricity than your home consumes, the excess power automatically flows back into the government electrical grid through your bi-directional net meter. You receive electricity bill credits that offset your nighttime grid consumption.