Rooftop solar in Mumbai
Calculator below is tuned to Mumbai's sunshine, not a generic national average.
- Peak sun
- ~4.7 hrs/day
- Generation
- ~3.8 units/kW/day
- Max subsidy
- ₹78,000
Where your money goes
Your 25-year money curve
What the planet gets
Based on India's grid emission factor (~0.82 kg CO₂/unit) and ~20 kg CO₂ absorbed per mature tree per year.
MSEDCL provides a free net meter. Systems up to 10kW accepted for net metering under MERC regulations.
Enter a valid monthly bill greater than ₹0 to see your results.
Solar in Mumbai: what's different locally
Mumbai's high tariffs make solar economics strong, but housing society roofs dominate, individual flat owners usually need the GHS/RWA route (₹18,000/kW for common facilities). Sea-air corrosion makes structure quality worth paying for.
DISCOM: Adani Electricity / BEST / Tata Power serve Mumbai; MSEDCL covers the wider region.
Typical residential areas going solar: Andheri, Borivali, Chembur, Mulund, anywhere with a shadow-free roof works the same way.
| Electricity provider | MSEDCL |
|---|---|
| Avg peak sun hours | ~4.7 hours/day |
| 3kW generates | ~342 units/month |
| Benchmark install cost | ~₹60,000/kW (gross, before subsidy) |
| 3kW total subsidy | ₹78,000 |
| Application timeline | 30-45 days |
Sun-hour figures are annual averages from public irradiance data, rounded, your roof's orientation and shading move the real number. Generation assumes a ~0.8 performance ratio (inverter losses, temperature, soiling).
Official portals, apply & verify here
We are not affiliated with any government body. Applications and current scheme rules live on these official portals, never pay anyone to "arrange" the subsidy for you.
Sources for this page
- PM Surya Ghar Muft Bijli Yojana (MNRE), subsidy slabs and process
- MSEDCL, tariff and net metering details
- Global Solar Atlas, city irradiance ballparks
Mumbai solar FAQs
How much does a 3kW solar system generate in Mumbai?
Roughly 342 units per month, based on Mumbai's ~4.7 peak sun hours per day (about 3.8 units per kW daily after real-world losses). High-sun months generate more, monsoon months less, this is the annual average.
What subsidy do I get for rooftop solar in Mumbai?
The same as everywhere in Maharashtra: ₹30,000 (1kW), ₹60,000 (2kW), ₹78,000 (3kW+) under PM Surya Ghar. Applications go through pmsuryaghar.gov.in.
Who handles net metering in Mumbai?
Adani Electricity / BEST / Tata Power serve Mumbai; MSEDCL covers the wider region. Expect roughly 30-45 days for the full process.
Is solar worth it in Mumbai?
Mumbai's high tariffs make solar economics strong, but housing society roofs dominate, individual flat owners usually need the GHS/RWA route (₹18,000/kW for common facilities). Sea-air corrosion makes structure quality worth paying for.
Other cities in Maharashtra
Maharashtra state page (full subsidy & net metering details)