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What changes the net cost

Commercial Solar Incentives for Businesses

Three federal programs do most of the work on a commercial project: a USDA grant for rural and agricultural sites, a federal investment tax credit, and accelerated depreciation. They stack, but the order matters — and the terms change.

  • Grants and guaranteed loans for rural businesses

    USDA REAP Grant Solar Funding for Farms and Rural Businesses

    The Rural Energy for America Program offers grants and guaranteed loans toward renewable energy systems for agricultural producers and rural small businesses. Under the October 2026 rule it is competitive, scored, and applied for after the system is built and metered.

    • Grants and guaranteed loans for agricultural producers and rural small businesses
    • Competitive and scored against other applicants, never automatic
    • Since the October 2026 rule, the system must be built and running before you apply

  • A federal investment tax credit on eligible project cost

    Commercial Solar Tax Credit: 30% Federal ITC for Businesses

    The federal investment tax credit reduces tax owed rather than income taxed, which makes it far more valuable than a deduction — and worthless to an entity with no liability. Here is how the structure works.

    • A credit against tax owed, not a deduction against income taxed
    • Base rate plus a much larger rate for projects meeting wage and apprenticeship rules
    • Possible adders for domestic content and certain project locations

  • Accelerated write-off of the solar asset

    Section 179 Solar Depreciation, Bonus Depreciation and MACRS

    Section 179 expensing, bonus depreciation and MACRS are three separate mechanisms that most business owners treat as one. The difference between them decides how much of a solar array you write off, and when.

    • Section 179 expensing, bonus depreciation and MACRS are three different rules
    • Section 179 has an annual dollar cap and a taxable-income limit; bonus depreciation does not
    • Solar property has historically used a 5-year MACRS class life

Put numbers on it

See what the incentives do to your payback

The savings calculator applies the federal investment tax credit to an estimated system cost and returns a payback range for your state and business type.
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Applying for a REAP grant this cycle?

Applications are scored and competitive, and the technical report has to be right. We prepare the system design and documentation your application needs — the grant itself remains yours to procure and validate.

Talk to us about REAPRead the REAP application guideOr call 770-490-2585