Home Energy Tax Credits: What Ended in 2025 and What Remains

What ended and when

Public Law 119-21, signed on July 4, 2025 and commonly called the One, Big, Beautiful Bill, moved the end dates of several energy credits forward. The IRS published the cutoffs in fact sheet FS-2025-05 on August 21, 2025:

The clean vehicle credits ended even earlier, for vehicles acquired after September 30, 2025; see EV tax credit in 2026.

The date that counts

The two home credits use different words, and the difference decides borderline cases.

• 25C counts the date the property is placed in service. The IRS page says you can claim the credit for improvements made through December 31, 2025, and that you claim it for the year the property is installed.
• 25D counts the date the expenditure is made, and FS-2025-05 says an expenditure is treated as made when the original installation of the item is completed. If installation was completed after December 31, 2025, the expenditure counts as made after that date. Paying a deposit in 2025 does not move a 2026 installation into 2025.

So the question for any project is when it was finished, not when it was ordered or paid for. Four example projects:

A project that slipped into January is the painful case: the work and the bill are the same as a few weeks earlier, but the credit is gone. If yours was finished right at the turn of the year, keep the installer's completion paperwork with your tax records, because the completion date is what the claim rests on.

Claiming 25C for a 2025 project

The credit is 30% of qualified costs, with yearly limits. Up to $1,200 a year applies to energy property and home improvements, within which exterior windows and skylights are capped at $600, exterior doors at $250 each and $500 in total, and home energy audits at $150. Separately, up to $2,000 a year applies to qualified heat pumps, heat pump water heaters and biomass stoves or boilers. The IRS list of qualifying items covered insulation and air sealing materials; exterior doors, windows and skylights meeting Energy Star requirements; home energy audits; central air conditioners; natural gas, propane or oil water heaters, furnaces and hot water boilers; electrical panelboards rated at 200 amps or more; electric or natural gas heat pumps and heat pump water heaters; and biomass stoves and boilers with a thermal efficiency of at least 75%. An example of a project finished in 2025:

The windows, doors and audit add up to $1,220 but share the $1,200 limit, so $20 is lost. The heat pump sits under its own $2,000 limit. For property placed in service in 2025, the IRS says no credit is allowed unless the item was produced by a qualified manufacturer, and you report its qualified manufacturer identification number (QMID) on the return; insulation and air sealing materials are exempt from that rule. The claim goes on Form 5695, Part II.

Claiming 25D for a 2025 project

The residential clean energy credit is 30% of the cost of qualified property: solar panels, solar water heaters, wind turbines, geothermal heat pumps, fuel cells and battery storage with a capacity of at least 3 kWh. Fuel cells are limited to $500 for each half kilowatt of capacity. The credit is nonrefundable, but unused amounts carry forward.

Example: a solar system costing $27,000, installation completed in 2025. The credit is $8,100. If your tax for 2025 is $5,500, the credit wipes that out and $2,600 carries forward to reduce tax in later years. That carryforward survives the end of the credit, because it was earned on a system installed in time. The solar panel sizing guide covers how big a system to plan without the credit.

What remains in 2026

• Claims for 2025 projects. Anything that met the deadlines goes on the 2025 return, filed in 2026, with Form 5695.
• 25D carryforwards from systems installed in time.
• 30C for a home charger. For individuals the credit is 30% of the cost up to $1,000 per item, for property placed in service through June 30, 2026, installed at your main home in an eligible low-income or non-urban census tract. A $1,800 charger installation would give $540. The IRS publishes the eligible tracts by GEOID; you claim on Form 8911.

Nothing on the IRS pages covers utility rebates or state programs; those are separate, and your utility and state energy office are the places to ask.

Deciding on a project without the credit

Without 30% off, the case for a heat pump, insulation or panels rests on running costs alone. Work out what the new equipment uses and costs per year with the electricity cost calculator, then compare against what you pay now. The guide to heat pump vs gas furnace cost walks through that comparison, and tax deduction vs tax credit explains why a credit was worth more than a deduction of the same size.

Tax rules change, and this page states only what the IRS pages listed below say as of this writing.

Frequently asked questions

Sources

• IRS, FS-2025-05 (August 21, 2025), FAQs for modification of sections 25C, 25D, 25E, 30C, 30D, 45L, 45W and 179D under Public Law 119-21 (termination dates; 25D expenditure made when installation is completed)
• IRS, Energy efficient home improvement credit (30%; $1,200 a year with $600 windows, $250 per door up to $500, $150 audits; $2,000 for heat pumps, heat pump water heaters, biomass; property placed in service through December 31, 2025; QMID for 2025; Form 5695 Part II)
• IRS, Residential clean energy credit (30%; solar, wind, geothermal heat pumps, fuel cells, battery storage of at least 3 kWh; not available for property placed in service after December 31, 2025; carryforward of unused credit; Form 5695)
• IRS, Alternative fuel vehicle refueling property credit (30% up to $1,000 per item for individuals; main home in an eligible census tract; placed in service through June 30, 2026; Form 8911)
• IRS, One, Big, Beautiful Bill provisions (Public Law 119-21 of July 4, 2025; energy credit end dates)

General information based on the sources above, not tax, legal or financial advice.

Written by Tobias. Updated October 30, 2026.