Delhi rooftop solar and net metering calculator
What would rooftop solar do to your Delhi bill? Enter your use and system size to see the bill with net metering, the PM Surya Ghar subsidy and the payback.
- Delhi’s own net metering rules
- PM Surya Ghar subsidy built in
- Bill run through the current tariff
Delhi net metering rules
- The system size depends on grid feasibility, the service line and the sanctioned load. A larger system is allowed if the consumer pays the extra SLD charges (DERC Net Metering Regulations 2014, reg. 5(3), 5(4)). Source
- Surplus exports are carried forward to the next bill as energy credit. The discom bills the net consumption at the normal tariff after it subtracts earlier credits (reg. 9(4), 9(5)). Source
- Credits left at 31 March are paid at the discom's Average Power Purchase Cost for that year. The rate is adjusted after the true-up (DERC Net Metering Guidelines 2014, clause 7). Source
- Net-metered systems were exempted from wheeling, banking, cross-subsidy and other charges for five years, unless extended (reg. 10). Source
- Delhi pays homes a generation-based incentive for five years: ₹3 a unit up to 3 kW, ₹2 a unit above 3 kW to 10 kW. The discom adjusts it against the bill (Delhi Solar Energy Policy 2023 SOP). 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.