Solar Panel Cost and Payback Calculator

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Enter your measurements

Total installed purchase cost

Enter the current written cash purchase price for the defined system scope before incentives.Upfront incentives you expect to realize

Enter only documented dollar benefits for which you have checked current eligibility, timing, limits, and tax treatment.Modeled first-year production

kWh/year

Use a site-specific first-year production model with disclosed shade, orientation, weather, and system-loss assumptions.Solar used on site

Enter the modeled share consumed while generated; the remainder is valued at the export rate.Avoided retail electricity rate

$/kWh

Enter the marginal per-kWh charge actually avoided by on-site solar under the current tariff.Export compensation rate

$/kWh

Enter the utility's current applicable compensation for exported energy; use zero if exports receive no credit.Annual operating and maintenance cost

$/year

Enter recurring monitoring, maintenance, insurance, or other annual costs included in this simple scenario.

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