Solar Calculator Delhi 2026

Rooftop solar in Delhi: DISCOMs, net metering and real savings

Delhi homes are served by three power distribution companies: BSES Rajdhani (BRPL) in south and west Delhi, BSES Yamuna (BYPL) in east and central Delhi, and Tata Power-DDL in north Delhi. All three offer gross and net metering for grid-tied rooftop solar, so units your panels export are credited against the units you import. For a typical residential system, net metering is the setting that makes solar pay, because Delhi households consume a good share of daytime generation directly and bank the surplus.

Delhi tariffs and what you save

Delhi residential tariffs are slab-based and, before any government electricity subsidy, upper slabs run in the region of ₹7-8 per unit plus fixed charges. Because avoided grid power is valued at your marginal tariff, we use about ₹7 per unit as a representative figure. A household paying high summer bills for air-conditioning typically sees the fastest returns. Try the solar savings calculator to model your own bill, or the on-grid solar calculator for a net-metered setup.

Sunshine and generation

Delhi averages roughly 4.3-4.5 peak sun hours a day across the year, so each 1 kW of well-oriented panels generates about 4.3 units daily, or around 1,550 units a year. A 3 kW system therefore produces roughly 4,600 units annually. Use the system size calculator to match capacity to your roof and consumption.

PM Surya Ghar national subsidy

The national PM Surya Ghar Muft Bijli Yojana gives ₹30,000 per kW for the first 2 kW, plus ₹18,000 for the 3rd kW, capped at ₹78,000 for systems of 3 kW and above. It applies to systems up to 10 kW and is paid by Direct Benefit Transfer to your bank account after the system is commissioned and inspected. Subsidised loans at around 7 percent are available; estimate instalments with the solar loan EMI calculator.

Delhi Solar Policy 2024 and the GBI

Delhi layers its own Solar Policy 2024 on top. Its headline feature for homes is a generation-based incentive (GBI): a per-unit payment for every unit your rooftop generates, reported around ₹3 per unit for systems up to 3 kW and ₹2 per unit for 3-10 kW, typically for five years. This is a per-kWh reward for generation, not a per-kW capital grant, so our state top-up field is kept at zero and the GBI shows up as extra cash flow rather than a lower upfront price. Reports of an added Delhi capital subsidy have varied, so treat both figures as provisional and verify the current Delhi policy on the official portal before you commit.

Worked example

Take a 3 kW system in south Delhi on BRPL, generating about 4,600 units a year. At ₹7 per unit, that offset is worth roughly ₹32,000 a year. PM Surya Ghar returns up to ₹78,000 upfront, and a ₹3 per unit GBI on 4,600 units could add close to ₹13,000 a year in the early years, sharply shortening payback. For batteries or larger loads see the battery bank calculator, and start any estimate at the India solar calculator. Figures are indicative; confirm tariffs, slabs and incentives for your connection.

Solar calculators for other Indian states & UTs

Pick your state or union territory for localized subsidy, tariff and net-metering figures — or open the full India states directory or the national India solar calculator.

Frequently asked questions

Your area DISCOM does: BSES Rajdhani (BRPL) in south and west Delhi, BSES Yamuna (BYPL) in east and central Delhi, or Tata Power-DDL in north Delhi. You apply through the national portal and your DISCOM installs the net meter.

It is a per-unit payment under the Delhi Solar Policy 2024 for electricity your rooftop generates, reported around ₹3 per unit up to 3 kW and ₹2 per unit for 3-10 kW, generally for five years. It is separate from the PM Surya Ghar capital subsidy. Verify the current rate and duration before committing.

The national subsidy is ₹30,000 per kW up to 2 kW, an extra ₹18,000 for the 3rd kW, and a cap of ₹78,000 for 3 kW and larger, paid by DBT after commissioning. It is the same across India, including Delhi.

Delhi's main residential support is the per-unit GBI rather than a clear per-kW capital grant, and reports of an added capital subsidy have varied. We therefore keep the state top-up at zero in the calculator and suggest you confirm the latest Delhi Solar Policy details officially.