How much does a rooftop solar panel system cost in India?

The cost of a rooftop solar panel system in India depends on system size, rooftop area, panel quality, and installation location.

Does this calculator include rooftop solar subsidy estimates?

Yes. The calculator includes indicative rooftop solar subsidy estimates based on commonly available residential subsidy structures.

What solar system size is suitable for a ₹20,000 electricity bill in West Bengal?

A 14.50 kW residential rooftop solar system is generally suitable for an electricity bill of ₹20,000 per month in West Bengal, depending on rooftop area, electricity usage patterns, and shadow-free rooftop availability.

How much can a 14.50 kW rooftop solar system save annually in West Bengal?

Based on estimated solar generation and current electricity tariffs, a 14.50 kW rooftop solar system in West Bengal may save approximately ₹222,634 annually.

Is rooftop solar growing in West Bengal?

Rooftop solar adoption is increasing across West Bengal due to rising electricity costs, improving solar technology, and growing awareness of long-term energy savings.

Solar Panel Cost for ₹20,000 Bill in West Bengal

Solar calculation based on your inputs. View estimated installation cost, subsidy, savings, and payback period below.

Recommended Solar System: 14.50 kW

Estimated Monthly Solar Generation: 1,627 units

Based on your electricity usage, rooftop area, and state solar output, this system can offset approximately 93% of your monthly electricity consumption.

Estimated Solar Installation Cost

₹812,000

Approximate system cost based on current market rates

Estimated Subsidy

₹78,000

Based on applicable residential subsidy scheme

Your Investment

₹734,000

Amount payable after subsidy deduction

Annual Power Generation

19,529 kWh

Estimated electricity output per year

Annual Electricity Savings

₹222,634

Based on your current electricity tariff

Payback Period

3.3 yrs

Estimated time to recover investment

Detailed Calculation Summary

Monthly electricity usage: 1,754 units
Maximum rooftop solar capacity: 23.09 kW
Required system based on usage: 14.62 kW
Usable rooftop area: 230.9 sq.m.
Estimated rooftop utilization efficiency: 57%

Average solar output in your state: 4.5 kWh/kW/day
Estimated 25-year total savings: ₹5,565,858
Net savings after installation cost: ₹4,831,858
Estimated bill reduction: 93%
Estimated CO₂ reduction (25 years): 400.4 tons

Disclaimer: This calculator provides estimated solar system size, installation cost, subsidy, electricity generation, savings, and payback period based on industry assumptions. Actual results may vary depending on roof conditions, equipment selection, electricity tariff, installer quotations, local weather, DISCOM policies, state regulations, and government schemes.

Customer Type

State

Average Monthly Bill (₹) Enter your average electricity bill in ₹.

Tariff per Unit (₹) Average rate in ₹ per kWh or unit.

Available Roof Area

Roof Unit

Shadow-Free Roof (%) Percentage of roof that is clear of shade and obstacles.

Panel Type

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Recent Solar Cost Calculations

Explore recent rooftop solar cost estimates based on different electricity bills, states, and customer types across India.

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More Solar Cost Estimates in West Bengal and Other States

Explore rooftop solar cost estimates, subsidy calculations, and savings insights across different Indian states.

How to Calculate Solar Panel Cost and Savings

Enter your electricity usage and rooftop details to estimate your recommended solar system size, installation cost, subsidy, and savings.

Step 1

Select your customer type (residential or commercial) and select your state for location-based solar output.

Step 2

Enter your average monthly bill and tariff per unit to estimate your electricity consumption.

Step 3

Enter your available rooftop area and shadow-free percentage to calculate usable solar area.

Step 4

Click Calculate Solar Cost to get your system size, cost, subsidy, annual savings, and payback period.

Calculation Assumptions

Approximate output benchmark: 1 kW rooftop solar generates about 120 units per month in typical Indian conditions.
Only 75% of shadow-free roof is considered usable to account for spacing, setbacks and maintenance access.
Indicative residential subsidy is applied using common PM Surya Ghar slabs up to 3 kW, with a practical cap beyond that.
Annual generation includes a derating factor for real-world system losses.

Solar Panel Cost for ₹20,000 Bill in West Bengal

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