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Solar Panel Cost Calculator

Gross, credit, and net cost of a solar install.

Inputs

Inputs and assumptions

DC array size.

Installed dollars per DC watt.

Fees, upgrades, and extras.

Federal credit rate you qualify for. The 30% residential credit (IRC 25D) ended for expenditures after 2025; commercial rules differ. Verify current law and your eligibility.

Result

Tax credit value
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Gross installed cost
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Net cost after credit
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What to check

  • System kW
  • Cost per watt
  • Credit eligibility
  • Current federal/state incentive law and your eligibility

Related calculators

This calculator is a first-pass screening tool. Verify your utility tariff, metered usage, equipment specifications, and installer quotes before making a decision.

Saved calculations

Keep the assumptions with the result.

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