Savings & Payback Calculator

Estimate how much you could save per month and how long it will take to pay off your system.

Your Inputs

Currency

Monthly Electricity Bill ($)

Electricity Rate ($/kWh)

US average is ~$0.17/kWh; check your bill for your rate.

System Size (kW)

Installed Cost per Watt ($)

Annual Electricity Price Increase (%)

Apply 30% federal tax credit

Results

Monthly Savings

Net System Cost

Payback Period

10-Year Savings

These are rough estimates. Actual savings depend on net metering policies, local rates, orientation, shading, and your utility's buyback rates. Use your real bill numbers for a better picture.