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Annual savings (estimate) Bill savings
₹16607.0 213%
Annual savings (estimate) ₹16607.0
Get full estimate Plan your solar | Price & savings
Bill savings 213%
Based on: 15 kWh/day usage · 5 kW solar · 5 kWh battery · typical tariffs

Solar & Battery Savings in West Bengal, India Get quotes from local installers

Design solar and battery systems for West Bengal using Photonik's professional design platform. West Bengal, with Kolkata as its capital, has growing solar adoption supported by state-level incentives and the central government's rooftop solar programme. The state's good solar irradiance and rising electricity costs make rooftop solar an increasingly smart investment for homeowners.

Solar Energy Savings in West Bengal

How Solar Reduces Your Electricity Bills

The calculations below show how your electricity bills change with solar.

What drives your savings in West Bengal

West Bengal’s solar irradiance of 4.5–5 kWh/m²/day is lower than western Indian states, and the heavy monsoon from June to September significantly reduces generation during those months. Residential tariffs are moderate at ₹5–7/unit for higher consumption slabs, and net metering is available through WBSEDCL. The PM Surya Ghar central subsidy reduces installation costs, making the investment viable despite lower annual output. For households in areas with unreliable grid supply, the backup power benefit of battery-paired solar adds substantial practical value.

Your usage & system size West Bengal

Energy usage & tariffs

Your daily energy consumption determines the optimal solar system size for your home in West Bengal. Typical homes consume approximately 8 kWh daily on average, though well-insulated properties with efficient appliances often use significantly less.

It's worth reducing your energy usage before going solar, as this can decrease the system size you need and improve payback. Focus on better insulation and energy efficient appliances.

5 kWh 100 kWh
₹ /kWh
₹ /kWh
%

lightbulb Note: These are simplified estimates. For detailed tariff inputs and advanced calculations, use the full Photonik app.

Representative flat export rate (feed-in tariff). What you earn per kWh of surplus solar exported to the grid. Your actual rate depends on your provider, plan, and time of day.

See how export rates work →

Estimated at 75% of the retail grid rate. A battery lets you store daytime solar and export during expensive peak hours, so each exported kWh is typically worth more than a flat feed-in tariff. Real returns depend on your time-of-use tariff and battery efficiency.

See how export rates work →

Solar system size

A 2.1kW system covers average consumption, but sizing slightly larger can help offset seasonal dips and future increases in usage from EVs or heat pumps. Going larger within the 3.2kW to 4.2kW range typically improves long-term value, since solar panels produce well for 25 years or more.

A 3.2 kW system in West Bengal generates approximately 14.4 kWh daily on average, with seasonal variation from 3.90 kWh/kW/day in December to 4.89 kWh/kW/day in April.

1 kW 20 kW

lightbulb

A 5 kW system in West Bengal can generate approximately 8202.0 kWh annually based on local sun conditions.

Battery storage

Solar-only systems in West Bengal typically provide 50% self-usage with a 3.2 kW installation, meaning 50% of your electricity still comes from the grid. A 10 kWh battery makes the most difference in winter when daylight hours are shorter — helping maintain closer to 99% self-sufficiency year-round rather than just in summer.

Battery economics depend on your specific tariff structure and usage patterns — the Photonik design tool can model these scenarios with your actual electricity plan.

0 kWh 30 kWh

lightbulb A 0kWh battery will make you about 0% self sufficient.

The sweet spot for most households is 5 – 13 kWh — larger batteries add independence but with diminishing payback, especially where feed-in tariffs are low.

System Pricing & Payback for West Bengal

Use the full Photonik solar planning and design platform to model a complete system for your home — including detailed costs, equipment options, and financial returns.

Try Photonik Solar Design

For a quick price guide, see the India solar calculator.

Solar Installers Kolkata

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

  • Aparajita Solar — Kolkata and West Bengal
  • Bhoodarsh Saur Shakti — Kolkata metropolitan area, West Bengal
  • SolarSquare — Kolkata and nationwide, West Bengal
  • Tata Power Solar Solutions — West Bengal, India