Solar Calculator

Enter your monthly usage and city — get instant estimates for system size, cost after subsidy, annual savings, and grid income.

Your Energy Profile

200units/mo
50 units₹1K/month bill2000 units

Solar peak hours in Mumbai:5 hrs/day

Add 20% Future Buffer

For EVs, ACs, or growing usage

Recommended System

System Size

1.6

kilowatts

Solar Panels

4

× 400W each

Investment Breakdown

Gross cost₹88K
PM Surya Ghar subsidy₹48K
Net investment₹40K

Annual Savings

₹16K

Payback Period

2.5 yrs

then pure profit

Explore Different System Sizes

Drag the slider to see how investment and returns change for any system size.

3kW(8 panels)
1 kW · Small flat5 kW · Home10 kW · Large home20 kW · Office / Villa

Gross Cost

₹1.8L

8 × 400W panels

After Subsidy

₹82K

₹94K subsidy

Annual Savings

₹17K

+ ₹6K grid

Payback Period

3.5 yrs

ROI after that

You'll export 2,155 units/year back to the grid

Earning ~ ₹6K/year via net metering @ ₹3/unit

25-Year Returns on Your System

5

years

Total savings

₹80K

+₹40K net profit

10

years

Total savings

₹1.6L

+₹1.2L net profit

25

years

Total savings

₹4.0L

+₹3.6L net profit

Your Environmental Impact

per year

1.9T

CO₂ avoided

2,278

kWh clean energy

47

trees equivalent

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* Estimates based on ₹55,000/kW installed cost, ₹7/unit tariff, 5 peak sun hours in Mumbai. Actual figures may vary.