Solar Panel Energy ROI Calculator
Check monthly savings, payback and whether your solar investment is worth it.

Solar Panel and Energy ROI Calculator

Estimate savings, payback and financial return of a photovoltaic system.

Solar Energy
Financial summary
Estimated generation/month: 585 kWh
Estimated offset: 100.0%
Monthly savings (year 1): R$322.00
Annual net savings (year 1): R$3,364.00
Estimated payback: 5 years 4 months
Estimated return date: June 2031
Cumulative balance at horizon: R$67,598.54
Worth it? Yes, it tends to be viable within the selected horizon.
Annual projection
YearTariffNet savingsCumulative balance
1R$0.92R$3,364.00-R$18,636.00
2R$0.98R$3,634.48-R$15,001.52
3R$1.05R$3,923.89-R$11,077.63
4R$1.13R$4,233.57-R$6,844.06
5R$1.21R$4,564.92-R$2,279.14
6R$1.29R$4,919.46R$2,640.32
7R$1.38R$5,298.82R$7,939.14
8R$1.48R$5,704.74R$13,643.88
9R$1.58R$6,139.07R$19,782.95
10R$1.69R$6,603.81R$26,386.75
11R$1.81R$7,101.07R$33,487.83
12R$1.94R$7,633.15R$41,120.98
13R$2.07R$8,202.47R$49,323.44
14R$2.22R$8,811.64R$58,135.09
15R$2.37R$9,463.46R$67,598.54