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Solaris360

Knowledge Center

Solar ROI Calculator

See how a rooftop solar system can reduce your electricity bills. Estimate annual savings, payback and lifetime returns. Indicative only - actual generation and savings depend on your site, electricity tariffs and system performance.
Solaris360 · Surat

Enter system parameters below to generate a full financial analysis.

1Customer

2System Parameters

ⓘTotal installed solar panel capacity in kilowatt-peak.
kWp
ⓘTotal cost to install the solar system, including hardware and labour.
₹
ⓘAutomatically updated when you change system size or total cost.
₹/kW
ⓘCurrent retail electricity price from the grid.
₹/kWh
ⓘPayment received per kWh exported to the grid.
₹/kWh
ⓘPercentage of generated solar power used on-site instead of exported.
%
3Advanced Assumptions
ⓘExpected annual energy generation per kWp installed.
kWh/kWp/yr
ⓘAnnual reduction in panel output due to aging.
% / yr
ⓘExpected annual increase in grid electricity prices.
% / yr
ⓘExpected operational lifetime of the solar system.
years

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Annual Generation

14,500 kWh

Year 1 output

Annual Savings

₹92,438

Year 1 savings

Payback Period

4.3 Yr

Simple payback

Total Savings

₹35,90,864

Over 25 years

Net Profit

₹31,90,864

After system cost

ROI

798%

Return on investment

CO2 Reduction: 170.8 tonnes

Over 25 years, equivalent to planting about 7,685 trees

Cumulative Savings Over System Lifetime

Break-even: Year 5

₹-4,00,000₹3,18,173₹10,36,346₹17,54,519₹24,72,691₹31,90,864Yr 1Yr 6Yr 11Yr 15Yr 20Yr 25

 

Net Position (₹) · Break-even: ₹0

Year-by-Year Breakdown

YearGeneration (kWh)Savings (₹)Net Position (₹)
114,50092,438-3,07,563
214,42895,654-2,11,908
314,35598,983-1,12,925
414,2841,02,428-10,497
514,2121,05,992+95,495
614,1411,09,681+2,05,176
714,0701,13,498+3,18,673
814,0001,17,447+4,36,120
913,9301,21,534+5,57,655
1013,8601,25,764+6,83,419
1113,7911,30,140+8,13,559
1213,7221,34,669+9,48,229
1313,6541,39,356+10,87,585
1413,5851,44,205+12,31,790
1513,5171,49,224+13,81,014
1613,4501,54,417+15,35,431
1713,3831,59,790+16,95,221
1813,3161,65,351+18,60,572
1913,2491,71,105+20,31,678
2013,1831,77,060+22,08,738
2113,1171,83,222+23,91,959
2213,0511,89,598+25,81,557
2312,9861,96,196+27,77,752
2412,9212,03,023+29,80,776
2512,8562,10,088+31,90,864