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Battery incentives, decoded.
The rules changed materially for 2026. The federal 30% tax credit for batteries was repealed for any purchase made after December 31, 2025. Standby generators have never had a federal incentive. Here's exactly what's still on the table — for your state.
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What's available where you live
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Programs for Illinois
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Incentive amounts, eligibility, and program status change frequently and vary by income, utility territory, and enrollment capacity — several VPP programs referenced here have historically closed to new enrollment once a capacity target is met. This page reflects Battery Economics' curated research as of the dates shown on each program card and is not a guarantee of eligibility or funding availability. Always confirm current terms directly with the program administrator, your utility, or a tax professional before purchasing equipment. See the methodology page for sourcing details.
2026 status, plainly
What changed this year
Federal 25D tax credit — repealed for batteries. The Residential Clean Energy Credit (26 U.S.C. §25D), which covered 30% of a battery's cost for systems of 3 kWh or larger, was terminated by the One Big Beautiful Bill Act (signed July 4, 2025) for expenditures made after December 31, 2025. The credit is keyed to when you paid, not when the system was installed. See the IRS Residential Clean Energy Credit page.
Standby generators — never had a federal credit. Unlike batteries, standby generators have never qualified for the Residential Clean Energy Credit or any other federal residential energy tax credit. For 2026, this means neither product has federal support — the first time that's been true for batteries since the credit's introduction.
State and utility programs are now the whole incentive story. With no federal credit in play, whether a battery pencils out anywhere near a Powerwall-style price now depends almost entirely on your state energy office, your utility's storage rebate, and whether a VPP program is open for enrollment in your area. Look up your ZIP above.