Solar & energy in Mumbai

India's financial capital. Good sun + PM Surya Ghar subsidy makes rooftop solar very affordable. Payback 3-5 years with subsidy.

Avg electricity rate
R0.1/kWh
India average
Peak sun hours
5.2
Annual average
Net metering
good
Net metering (Maharashtra policy)
Solar friendliness
★★★★★
Out of 5

Key facts

  • RegionMaharashtra
  • CountryIndia
  • CityMumbai
  • Average rateR0.1/kWh
  • Peak rate (TOU)R0.14/kWh
  • Off-peak rate (TOU)R0.06/kWh
  • Peak sun hours5.2 hrs/day
  • Net metering policyNet metering (Maharashtra policy)
  • NM qualityGood
  • Solar friendliness rating★★★★★/5

Available incentives

  • PM Surya Ghar subsidy (up to ₹78,000)

Net metering quality

Quality of net metering policy (higher = better for solar economics):

Good — Net metering (Maharashtra policy)

What this means

Good net metering policies keep solar profitable with reasonable payback periods.

Example: 900 kWh/month household in Mumbai

At 5.2 peak sun hours and a 400W panel, you'd need approximately 16 panels (6.4 kW system) to cover your usage. That produces ~10,447 kWh/year, saving about R1,045/year at the 0.1/kWh local rate.

Run the full calculator

Going solar in Mumbai

Mumbai, in Maharashtra, India, has 5.2 average peak sun hours per day — excellent for solar. The local electricity rate is R0.1/kWh, below the India average.

Net metering in Mumbai is rated good. Net metering (Maharashtra policy). This significantly affects solar payback: with excellent net metering, every excess kWh you produce is credited at full retail value; with poor net metering, exports may be worth only 10-30% of retail, making battery storage much more attractive.

Available incentives include: PM Surya Ghar subsidy (up to ₹78,000). These can substantially reduce the upfront cost of solar and battery installations. Note: the US federal solar tax credit expired December 31, 2025. State and local incentives still vary by region. South African taxpayers can claim accelerated depreciation under SARS section 12B.

Next steps

Use the Solar Panel Sizing Calculator with 5.2 peak sun hours to find out exactly how many panels you need. Then check the Solar Savings Calculator for a 25-year projection using the local R0.1/kWh rate. If net metering is poor in Mumbai, also run the Battery ROI Calculator — batteries may be essential rather than optional.