Home solar can still be worth it in 2026, but the single biggest subsidy is gone. The 30% federal residential clean energy credit (Section 25D) expired for systems placed in service after December 31, 2025, under the 2025 budget law. That removes roughly a third of the effective discount homeowners had relied on for years.
This guide explains what changed, how much it lengthens payback, and where solar still makes financial sense. For your own numbers, use the solar payback calculator — its default federal credit is now set to 0%.
What exactly expired?
For more than a decade, homeowners who bought a system could deduct 30% of the cost from their federal tax bill. The 2025 law repealed that credit for residential systems placed in service after the end of 2025. Practically:
- 2025 installs (switched on by Dec 31, 2025) could still claim 30%.
- 2026 and later installs get 0% federal credit for owner-occupied purchases.
- A separate business credit (48E) can still apply to third-party-owned systems (leases and power purchase agreements) for now, but in that model a company owns the panels, not you.
Source: Congressional Research Service and IRS guidance summaries.
How much does losing the credit change payback?
Removing a 30% credit raises your net up-front cost by about 30%, because you now pay the full sticker price. Roughly, that adds 2–4 years to a payback that used to land around 6–9 years.
Here is a like-for-like example for an 8 kW system at $3.00/W ($24,000 gross), using a 3%/yr rate escalation and 0.5%/yr panel degradation:
| Scenario | Net up-front cost | Approx. simple payback |
|---|---|---|
| With 30% credit (2025) | $16,800 | ~6–7 years (sunny, high-rate state) |
| No credit (2026) | $24,000 | ~9–10 years (same state) |
| No credit, cheap-power state | $24,000 | 15+ years |
These are illustrative estimates from our model, not guarantees — your quote, usage and net-metering rules move the numbers. See the methodology for the formulas.
Where is solar still worth it in 2026?
The two levers that decide payback are your electricity rate and your sun. The credit expiring doesn’t change that ranking — it just shifts everyone’s payback later. Solar still pays off fastest where power is expensive and the sun is strong:
- Fast payback: Hawaii (42¢/kWh), California, Massachusetts, New York — high rates do the heavy lifting.
- Slow payback: Washington, Nevada — cheap electricity stretches the timeline despite good sun.
Compare them all on the solar payback by state page.
What still helps in 2026?
The federal credit is gone, but several things still improve the math:
- State and utility incentives. Several states keep meaningful programs — for example New York’s 25% state credit, Massachusetts SMART payments, and SREC markets in New Jersey, Illinois and Pennsylvania.
- Net metering. Where utilities still credit exports near retail value, payback is much faster than under “net billing” regimes.
- Falling hardware prices. Module and install costs have trended down, partly cushioning the lost credit.
- Rising electricity rates. US residential prices averaged about 18¢/kWh in early 2026, up from a year earlier (EIA). The more rates climb, the more each kWh you self-generate is worth.
The bottom line
In 2026, solar is no longer a near-automatic win — it’s a case-by-case decision. If you’re in a high-rate, sunny state with decent net metering, payback in the high single digits to low teens is realistic even without the credit. If your power is cheap, the timeline may stretch past a typical homeownership horizon.
Run your own quote through the payback calculator, then read solar payback period explained to understand what drives the result.
This article is general information, not financial or tax advice. Confirm incentives with a tax professional and your utility.