Maharashtra rooftop solar and net metering calculator
What would rooftop solar do to your Maharashtra bill? Enter your use and system size to see the bill with net metering, the PM Surya Ghar subsidy and the payback.
- Maharashtra’s own net metering rules
- PM Surya Ghar subsidy built in
- Bill run through the current tariff
Enter your units to see the bill.
Maharashtra net metering rules
- Consumers of all categories can use net metering, from 1 kW up to the sanctioned load (MERC Grid Interactive Rooftop RE Regulations 2019, regs 4.2, 6.1, 6.2). Source
- Exports are set off against imports in each billing period and any surplus is carried forward as credited units. Units still unadjusted at the end of the year are bought at the generic tariff MERC approves for that year (reg. 11.4). Source
- No grid support charge for net-metered consumers with sanctioned load up to 10 kW (reg. 11.5). The 2023 amendment also holds off grid support charges until the state's rooftop capacity reaches 5,000 MW. 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.