Understanding Solar Tax Incentives: How to Maximize Your Benefits

Solar tax incentives changed in a big way for 2026. The 30% federal credit that homeowners counted on for years ended for systems installed after December 31, 2025. What remains is aimed mostly at businesses and at third-party-owned systems like leases and power purchase agreements. Understanding what is left, and what is not, keeps you from signing a contract built on 2025 math.

This post covers how solar tax incentives work now, what changed, and what it all means for homeowners and businesses in Nashville and Middle Tennessee. It is general guidance, not tax advice. Always confirm your situation with a tax professional.

Federal Solar Tax Incentives

The Residential Clean Energy Credit (Section 25D) Ended After 2025

For years, the best-known federal incentive was the 30% credit for homeowners, often called the solar Investment Tax Credit or ITC. Its formal name was the Residential Clean Energy Credit, under Section 25D of the tax code. It let homeowners take 30% of the cost of a qualifying solar or battery system off their federal income taxes.

The One Big Beautiful Bill Act, signed July 4, 2025, ended that credit for systems installed after December 31, 2025. The IRS now states the credit is not available for property placed in service after that date. If you bought a system in 2026 for a home you own, there is no 30% coming back at tax time.

What If Your System Was Installed in 2025?

If your system was installed and placed in service by December 31, 2025, it may still qualify on your 2025 return using IRS Form 5695. It was a non-refundable credit, meaning it could reduce your tax owed but not create a refund. Ask your tax professional how it applies to you.

The Business Clean Electricity Credit (Section 48E)

The business side works differently. Commercial solar projects, and systems owned by a third party such as a solar lease or PPA provider, may still qualify for the 48E clean electricity credit. Under the 2025 law, commercial solar projects that began construction after July 4, 2026 must be placed in service by December 31, 2027. Battery storage is not subject to that solar deadline. Third-party-owned residential systems may carry the 48E credit through 2027.

State and Local Solar Tax Incentives

Some states and local governments add their own incentives, such as state tax credits, rebates, and exemptions from property or sales taxes. These vary a lot from state to state.

State Tax Credits

Some states offer their own solar income tax credits. Tennessee is not one of them. There is no Tennessee state solar income tax credit for homeowners.

Property Tax Exemptions

Some states exempt the added value of a solar system from property taxes. In Tennessee, the main property tax provision for solar is aimed at certified green energy production facilities rather than typical home rooftops. Check with your county assessor before you count on it.

Sales Tax Exemptions

Some states exempt solar equipment from sales tax. In Tennessee, the available provisions also tend to target certified green energy production facilities and commercial projects. DSIRE, the Database of State Incentives for Renewables and Efficiency, is the best place to check what currently applies.

Maximizing Your Benefits

Timing Your Installation

For homeowners, the timing window for the 30% credit has closed. For businesses, timing still matters a great deal. Under 48E, a commercial solar project that began construction after July 4, 2026 has to be placed in service by December 31, 2027. If you own a business, farm, or church property and are weighing solar, talk with your tax advisor early so the schedule works.

Combining Incentives

Businesses can often stack the 48E credit with depreciation, including MACRS and any current bonus depreciation. USDA REAP grants used to be a common add-on for farms and rural businesses, but 2026 USDA rule changes sharply restricted solar eligibility and are being challenged in court. Do not count on REAP funding.

Financing Options

How you pay for solar now decides who gets any tax benefit. If you buy with cash or a loan, you own the system and, for a home installed after 2025, there is no federal credit. If you lease or sign a power purchase agreement (PPA), the third-party owner may claim the 48E credit and pass part of the value to you through a lower monthly price. You do not own the equipment, so read the escalator, buyout, and roof removal terms closely.

Important Considerations

Consulting Professionals

Tax rules for solar changed fast in 2025 and 2026. Talk with a tax professional or financial advisor about your own situation, especially if you own a business, rental property, or farm.

Keeping Up with Changes

Many websites still show the 30% homeowner credit as available through 2032. That information is out of date. Go by current IRS pages and your tax professional, and be wary of any quote that shows a price “after the tax credit” for a system you will own.

Documentation and Compliance

Keep records of every cost tied to your solar project, including invoices, contracts, and permits. For commercial projects, documents showing when construction began and when the system was placed in service matter for 48E. Make sure your installer is licensed, insured, and follows local codes and utility interconnection rules.

What This Means in Nashville and Middle Tennessee

Here is the plain local picture for 2026.

• No homeowner federal credit. Plan on the installed price. Residential solar in Nashville runs about $2.85 – $3.50 per watt before incentives. A typical 8 to 14 kW home system lands around $22,800 – $49,000 installed.
• No state credit. Tennessee has no state solar income tax credit for homeowners.
• No traditional 1-for-1 net metering. Tennessee is TVA territory, and TVA retired the old Green Power Providers buyback. Nashville Electric Service (NES) runs NESolar Connect and NESolar Savings, limited programs that buy eligible excess solar under specific terms and caps. Size your system for self-consumption, not export.
• Businesses still have options. Commercial solar from 50 to 700+ kW runs about $2.20 – $3.00 per watt, and 48E plus depreciation can still apply on the timeline above.

Without the credit, the value of solar in Middle Tennessee comes from the power you make and use, plus backup when the grid goes down. A battery matters here: Winter Storm Fern in January 2026 knocked out power to about 230,000 NES customers at the peak, and NES took about 13 days to restore nearly all power.

Conclusion

The big homeowner solar credit is gone for 2026 installs, and anyone telling you otherwise is working from old numbers. What is left is real but narrower: 48E for businesses and third-party-owned systems, depreciation for commercial owners, and limited utility programs. The Solar Roofers, the solar and battery side of The Metal Roofers, will give you an honest installed price and leave the tax call to your tax professional. Call us at (615) 933-8120 or schedule a free assessment online.

References

1. U.S. Internal Revenue Service. Residential Clean Energy Credit.
2. U.S. Internal Revenue Service. About Form 5695, Residential Energy Credits.
3. Database of State Incentives for Renewables & Efficiency (DSIRE). Tennessee programs.
4. Nashville Electric Service. Solar Programs.
5. TVA EnergyRight. Dispersed Power Production.