Puducherry rooftop solar and net metering calculator
What would rooftop solar do to your Puducherry bill? Enter your use and system size to see the bill with net metering, the PM Surya Ghar subsidy and the payback.
- Puducherry’s own net metering rules
- PM Surya Ghar subsidy built in
- Bill run through the current tariff
Enter your units to see the bill.
Puducherry net metering rules
- Homes can use net metering for a solar system up to their sanctioned load or contract demand (JERC Net Metering Regulations 2019, reg. 4.4). Source
- Exported units are set off against imported units on each bill. Extra units carry forward to the next bill as credited units (reg. 11.2). Source
- The discom buys units still unused at 31 March at the lower of its average power purchase cost or the JERC feed-in tariff (reg. 11.3). Source
- The discom pays this amount by 31 May. Carried-forward units restart from zero each April (regs 11.3, 11.5). Source
- Net-metered solar systems pay no banking charges (reg. 14). Source
- Since the 2024 amendment, homes can also choose gross metering or net billing. This calculator works out net metering only. Source
- JERC directed the Puducherry Electricity Department to bill and account prosumers' imports and exports every month (Tariff Order of 24 September 2025, para 2.2.13). 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.