EcoTrack

Solar Payback Period Calculator

When does solar start saving you money?

Cost divided by yearly savings

Payback period is simply the system's total cost divided by how much money it saves each year on electricity bills — a straightforward way to compare solar against its upfront investment.

What this simple version leaves out

This calculation ignores financing costs, panel degradation over time, changing electricity prices, and available tax incentives or rebates — all of which shift the real-world payback period, usually favorably.

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EcoTrack

Solar Payback Period Calculator

When does solar start saving you money?

System cost ($)

Annual generation (kWh)

Electricity price ($/kWh)

Payback period

12.5 years

Annual savings: 1,200 $

What you entered

System cost ($): 15000Annual generation (kWh): 8000Electricity price ($/kWh): 0.15

1
Annual savings = kWh × price per kWh
8000 × 0.15= 1200
2
Payback period = system cost ÷ annual savings
15000 ÷ 1200= 12.5 years

Result

Payback period: 12.5 years

This solar system pays for itself in about 12.5 years.

Cost divided by yearly savings

Payback period is simply the system's total cost divided by how much money it saves each year on electricity bills — a straightforward way to compare solar against its upfront investment.