Punjab rooftop solar and net metering calculator
What would rooftop solar do to your Punjab bill? Enter your use and system size to see the bill with net metering, the PM Surya Ghar subsidy and the payback.
- Punjab’s own net metering rules
- PM Surya Ghar subsidy built in
- Bill run through the current tariff
Enter your units to see the bill.
Punjab net metering rules
- Homes can use net metering from 1 kWp up to their sanctioned load, with a limit of 500 kWp (PSERC Third Amendment 2026, reg. 4.2(i)). Source
- Excess exports are carried forward to the next bill within the settlement period. The settlement period runs from 1 October to 30 September (reg. 12.3(a), reg. 2(za)). Source
- At the end of the settlement period, PSPCL pays for unadjusted credits at 75% of the feed-in tariff for that year. The 2026 amendment removed the old 90% generation limit (reg. 12.3(d)). Source
- PSERC kept the feed-in tariff at ₹2.97 a unit for FY 2026-27 (PSPCL Tariff Order FY 2026-27, para 6.5). Source
- Net-metered systems pay no wheeling, cross-subsidy, transmission, distribution or banking charges (reg. 16). Fixed charges and government levies stay payable (reg. 12.3(g)). Source
Default generation of 100 units per kW a month: the Union Cabinet's PM Surya Ghar note says a 3 kW system 'will be able to generate more than 300 units a month on an average'. Source
PM Surya Ghar central subsidy: ₹30,000 a kW for the first 2 kW and ₹18,000 for the third kW, no more above 3 kW (₹78,000 at most). Grid-connected homes only, domestic-made modules, once per home. MNRE benchmark cost ₹50,000 a kW up to 2 kW and ₹45,000 a kW above. Scheme runs to 31 March 2027. MNRE guidelines
Rooftop solar questions
How does net metering work?
A two-way meter records what you draw from the grid and what your panels send to it. On each bill the units you exported are taken off the units you imported, and you pay for the net units at the normal tariff. What happens to extra units depends on the state: some buy them every month, others carry them forward and settle at the end of the year.
How much does a 1 kW rooftop system generate?
The Union Cabinet’s note on PM Surya Ghar says a 3 kW system makes over 300 units a month on average, about 100 units per kW. MNRE says 1 kW can make 4 to 5.5 units on a clear sunny day. Your roof’s direction, shade and dust change this, so you can edit the figure.
How much is the PM Surya Ghar subsidy?
For homes: ₹30,000 a kW for the first 2 kW and ₹18,000 for the third kW, so ₹78,000 for 3 kW or more. Higher amounts apply in special-category states. The system must be grid-connected and use domestically made modules, and a home can get it only once. The scheme runs until 31 March 2027.
Do I still pay a fixed charge with solar?
Yes. In every state covered here, fixed charges and government levies stay payable whatever your solar credits.