The Tennessee solar tax credit in 2026
The federal residential credit is not available for any property placed in service after December 31, 2025 (IRS, checked 2026-08-05), and Tennessee has no state credit. What survives is a commercial one.
Published .
Two things are true at once here, and most of what you will read online gets one of them wrong.
The federal credit that paid for roughly a third of a home solar system is over for anyone buying with cash or a loan. The IRS states that the Residential Clean Energy Credit equals 30% of the costs of new, qualified clean energy property installed from 2022 through December 31, 2025, and that it is not available for any property placed in service after December 31, 2025 (IRS, checked 2026-08-05). It had been legislated to run into the 2030s and it ended seven years early.
The other true thing is that a different federal credit did not end, and it is the reason lease and power purchase offers in this state can still talk about a federal benefit without lying to you.
There is no Tennessee state credit, and there never really was
Most people arrive here looking for a state credit. Tennessee does not have one. There is no state income tax on wages here, which means there is no state return for a residential credit of that shape to reduce in the first place.
What the state runs instead are grants, loans and utility programmes. The DSIRE database of state incentives, which tracks this for every state, also records the part that matters more than any credit would: Tennessee does not offer net metering and does not have standardized interconnection rules (DSIRE, checked 2026-08-05).
That single sentence does more to your payback period than a state credit ever would have. It is why the export question, rather than the tax question, is the one to spend your attention on, and our guide to TVA net metering in Tennessee covers it in full.
Section 48E survived, and it is not what the shorthand says it is
The credit still standing is the Clean Electricity Investment Credit, Section 48E. It is a commercial credit, claimed by whoever owns the equipment, and that distinction is the whole story.
The IRS puts the base amount of the Clean Electricity Investment Credit at 6 percent of the qualified investment, increased by up to 5 times, or up to 30%, for facilities meeting prevailing wage and registered apprenticeship requirements (IRS, checked 2026-08-05). It applies to a qualified facility or energy storage technology placed in service after December 31, 2024.
Read that twice, because the industry shorthand for it is wrong. The base is 6 percent. Thirty is a ceiling reached by meeting conditions, not a headline rate. Anyone describing 48E to you as "the 30% credit" is quoting the best case as though it were the rule, when the IRS puts the base at 6 percent (IRS, checked 2026-08-05).
It also matters that this one is moving. A sub-rule about when a project counts as begun has already been through a federal court, so a timing assumption that held last quarter is not automatically good this quarter. On a commercial roof that belongs in front of your own tax adviser before it goes anywhere near a budget. What the credit does to a commercial project's shape is covered on our commercial solar installation page.
Why a lease can still offer you a federal benefit and a purchase cannot
This is the part that confuses people, and it is not a trick.
If you buy the system, you own it, and the credit that used to reward you for owning it no longer exists. If a company owns the system and sells you either the equipment's use (a lease) or the power it makes (a power purchase agreement), that company is the owner. It is a business placing generating equipment in service, so it can claim the commercial credit, and it prices what it charges you accordingly.
You are not receiving a tax credit in that arrangement. You are receiving a price that somebody else's tax credit helped set. Those are different things, and the difference shows up years later, at resale and at the end of the term.
| Buy with cash or a loan | Lease or power purchase agreement | |
|---|---|---|
| Who owns the equipment | You | The provider |
| Federal credit available to you | None. The residential credit ended for property placed in service after December 31, 2025 (IRS, checked 2026-08-05) | None directly. The provider may claim Section 48E as the owner (IRS, checked 2026-08-05) |
| Who benefits from the surviving credit | Nobody, on a residential purchase | The provider, who prices your agreement around it |
| What you pay | A price, once | A monthly figure, usually escalating, for fifteen to twenty five years |
| Selling the house | The array goes with it | The agreement has to be transferred or bought out, and your buyer has to accept it |
| Who fixes it when it stops producing | You, under whatever warranties you hold | The provider, under the agreement, for as long as they are still trading |
Neither column is the right answer. A lease is not a scam, and a purchase is not automatically better now that the credit is gone. But the transfer row is where most of the regret in this market comes from. Read our guide to why people get rid of their solar panels before you sign a twenty year agreement on a house you might sell in seven.
What the end of the credit actually did to the numbers here
Losing the credit did not change what a system costs. It changed how long it takes to pay for itself, and in Tennessee it landed on top of an export arrangement that was already unusual.
A Nashville Electric Service residential customer buys power at a base rate of 9.254 cents per kilowatt-hour, effective October 2024, plus a fuel cost adjustment NES lists at 2.610 cents for August (NES, checked 2026-08-14). Meanwhile Middle Tennessee Electric tells its members that excess generation can be sold to TVA for roughly 2 cents per kilowatt-hour under a Dispersed Power Production contract (MTE, checked 2026-08-05).
So the value of a solar kilowatt-hour here depends almost entirely on whether you use it yourself or send it out. That was true before the credit ended. What changed is that it used to be a second-order detail and is now the main event, because there is no longer a federal payment at the front of the project absorbing a mediocre answer.
Three questions to ask anyone quoting you a price this year
Does this price assume a federal tax credit, and which one? If the answer is the residential credit, the quote is built on something that ended (IRS, checked 2026-08-05). If the answer is 48E, then you are being quoted a lease or a power purchase agreement, whether or not that word has come up yet.
What did you assume I would be paid for exported power? Anything that sounds like the retail rate is wrong in this state.
What is the payback with no credit at all? A straight answer to that is the most useful thing you can get out of a sales conversation this year.
If you would rather see the arithmetic than the pitch, our breakdown of what solar panels cost in Nashville works through the same numbers from the other end. And if the array on your roof is already there and simply not producing what it should, that is a solar panel repair question rather than a tax one.