TL;DR:

  • The IRA offers up to 30% back on solar, batteries, heat pumps, and EVs through 2032
  • The EV point-of-sale transfer means you don’t need tax liability to get the $7,500 credit
  • Stack federal + state + utility incentives to cut a $54,500 home upgrade to ~$36,000

The Inflation Reduction Act locked in $369 billion in clean energy incentives through 2032. In 2026, the credits and phase-out schedules are largely unchanged — standalone batteries now qualify for the 30% solar credit, and state programmes keep growing on top of the federal base.

The Five Credits That Do Most of the Work

Credit 25D covers solar panels, batteries (3kWh+), and geothermal — 30% of cost, no dollar cap, no income limit. This is the big one.

Credit 25C covers heat pumps, windows, and insulation, up to $3,200 per year with sub-caps by category.

Credit 30D is up to $7,500 for qualifying new EVs. Income limits apply ($150K single / $300K joint), and the vehicle must be assembled in North America.

Credit 25E gives up to $4,000 on used EVs — same point-of-sale mechanics, lower income limits ($75K single / $150K joint).

Credit 45W covers commercial EVs up to $40,000 with no income or assembly restrictions.

Federal credits are non-refundable, meaning they reduce what you owe rather than putting cash in your pocket. Two mechanisms help if your tax liability is low — the 25D carryforward rolls unused credit forward indefinitely, and the 30D point-of-sale transfer lets you take the EV credit as an instant dealer discount regardless of your tax bill.

The 25D Credit: Solar and Batteries

Rate: 30% of installed cost through 2032, dropping to 26% in 2033 and 22% in 2034. No cap. No income limit.

What qualifies: rooftop or ground-mount solar panels, battery storage with at least 3kWh capacity (including standalone batteries with no solar attached), geothermal heat pumps, small wind turbines, and fuel cell systems.

To claim it, file IRS Form 5695, Part I. Keep your installer invoice, manufacturer certification, and payment records. No pre-approval needed — just solid documentation.

The carryforward works exactly as it sounds. If you have a $10,000 credit but only $6,000 in tax liability this year, the remaining $4,000 carries to next year. No credit is wasted.

The 25C Credit: Home Efficiency Improvements

Rate: 30% of cost, subject to annual caps. The $3,200 total breaks into sub-limits:

  • Heat pumps (space heating/cooling): $2,000
  • Windows: $600 | Exterior doors: $500
  • Insulation and air sealing: $1,200
  • Electrical panel upgrade: $600 | Energy audit: $150

The cap resets every tax year — and that’s worth using strategically. Splitting work across two years can capture more credit. Do your heat pump in Year 1 ($2,000), then windows and insulation in Year 2 ($1,800), and you beat the $3,200 all-at-once cap. Claim on IRS Form 5695, Part II with the manufacturer’s Product Certification Statement.

The 30D EV Credit: Up to $7,500

All four requirements must be met: vehicle assembled in North America (check at fueleconomy.gov), MSRP under $55,000 for cars or $80,000 for SUVs/trucks, buyer income at or below the limits, and battery sourcing requirements. Most major brands qualify on the battery front.

The point-of-sale transfer is genuinely useful. Since 2024 you can assign the credit to the dealer as an instant price reduction — someone owing only $2,000 in taxes still gets the full $7,500 upfront discount. Sign IRS Form 15400 at the dealership.

Stacking Credits: A Worked Example

A Colorado homeowner installs solar, a battery, and a heat pump in one tax year:

ImprovementCostFederal Credit
10kW solar system$28,000$8,400 (25D)
Tesla Powerwall 3 (13.5kWh)$10,500$3,150 (25D)
Mitsubishi heat pump$12,000$2,000 (25C, capped)
Insulation upgrade$4,000$1,200 (25C)
Total$54,500$14,750

Add Colorado state and Xcel Energy utility rebates ($3,600) and the all-in cost drops to **$36,150 — a 34% reduction.**

A couple of rules to keep in mind: 25D and 25C can be claimed in the same year, utility rebates reduce your 25D credit basis, and you can’t claim both 25D and 25C on the same piece of equipment.

Finding State Incentives

Use dsireusa.org — the Database of State Incentives for Renewables and Efficiency, maintained by NC State University. Filter by state and technology to see every applicable credit, rebate, loan, and exemption.

Notable 2026 programmes: Massachusetts Mass Save heat pump rebates up to $10,000, New York’s NY-Sun solar rebates up to $5,000, and California’s SGIP battery rebates up to $1,000/kWh.

Know what type of incentive you’re dealing with before counting on it. Tax credits require tax liability. Rebates pay cash regardless. Property tax exemptions are usually automatic.

Common Mistakes When Claiming

  1. Wrong tax year: the credit applies when the system is placed in service, not when you signed the contract
  2. Forgetting the carryforward: tax software tracks this — don’t skip entering last year’s unused credit
  3. Exceeding the MSRP cap: options pushing a car above $55,000 kill the 30D credit
  4. Poor documentation: keep certifications, invoices, and receipts for at least 3 years
  5. Not splitting 25C improvements across two years — that alone can capture up to $600 more

Use the 25C annual reset, stack state programmes via dsireusa.org, and claim via Form 5695 (25D/25C) or Form 8936 (30D). These are among the most significant residential incentives in US history — worth taking seriously.