- The 30% federal tax credit for home solar ended for systems placed in service after December 31, 2025. Payback is longer now.
- EnergySage puts the average payback for its shoppers at about 10.8 years (September 2026), with huge differences by state.
- Your electricity price and how your utility pays for exported power matter more than the panel brand.
- Use the calculator below with your own bill and a real quote.
The solar payback period is the number that decides whether solar is worth it for you. It is simply how many years it takes for the money you save on electricity to equal what you paid. Solar ads tend to skip the details, and the numbers changed a lot in 2026. Here is the honest, current picture, the simple math behind your savings, and a calculator to run your own numbers.
The Big Change: The Federal Tax Credit Is Gone
The Residential Clean Energy Credit (Section 25D) covered 30% of a home solar system’s cost. Under the One Big Beautiful Bill Act, it ended for systems placed in service after December 31, 2025. Homeowners whose systems were installed by then can still claim it on their 2025 return, and unused credit can carry forward. For anyone installing in 2026 or later, it no longer applies.
Be careful with any salesperson or old article still promising the 30% credit “through 2032.” That was the old law. Leases and power purchase agreements are a different story, because the company that owns the panels may claim a business credit. See our guide to the solar tax credit in 2026.
How Much Can You Save With Solar Panels?
Each kilowatt-hour (kWh) your panels make is one you don’t buy from the utility. So your yearly savings are roughly:
kWh your system makes × what each kWh is worth to you
A 7 kW system with 4.5 peak sun hours and typical losses makes about 9,900 kWh a year. At 17¢ per kWh with full credit for every kWh, that is worth about $1,680 a year. If your utility only pays 8¢ for the half you export, it drops to about $1,240. Same panels, very different savings.
- Electricity price: the EIA’s U.S. average was 16.5¢ per kWh in 2024, and many states pay far more.
- Net metering: with full retail net metering, exported power earns about what you pay. Under “net billing,” exports may earn only 5–8¢, so using your solar at home matters more.
- Fixed charges: customer fees and minimum bills don’t go away. A “zero bill” promise deserves a second look.
- Changes over time: rates usually rise, which helps; panels slowly lose output (NREL reports a median of about 0.5% a year), which hurts a little.
Solar Payback Period Calculator
Enter your numbers. This is an estimate, not a quote: real production and your utility’s rules change the result. It ignores financing interest, maintenance and inverter replacement.
Production uses 14% system losses and 0.5% yearly panel decline. Payback is not the same as a yearly return: it ignores savings after payback, loan interest, upkeep and the value of money over time.
Why Your State Matters More Than the National Average
Location is the biggest factor in your solar payback period. EnergySage’s state data (September 2026) shows averages from about five years to more than 20.
- High electricity prices (Hawaii, California, much of the Northeast) mean every solar kWh is worth more, so payback is short.
- Strong state incentives (state credits, rebates, or SREC-style certificates in places like Massachusetts and New Jersey) partly fill the gap left by the federal credit.
- Weak net metering stretches payback, because exported power earns far less than you pay. There, a battery or shifting use to midday helps.
- Cheap electricity and few incentives (several Southern and Mountain states) give some of the longest paybacks.
What Real Owners Say
These are individual experiences, summarized in our own words. Both systems were installed when the 30% federal credit still existed, so a 2026 buyer would wait longer.
An owner whose 11.7 kW system went live in December 2016 paid about $16,000, or $11,200 after the credit. His installer projected a 7–8 year payback. He took a 10-year loan whose payments were a little above his old electric bill, and expected the real payback to be 10–12 years.
Source: TractorByNet forumA long-time owner who tracks every month on the EcoRenovator forum compared his production year by year. Based on real output, he expected to be paid back in just under 10 years, and used 10.5 years as his realistic figure, since sunshine varies.
Source: EcoRenovator forum- Tax credit status from the law and IRS guidance on Section 25D
- Prices and payback averages from EnergySage marketplace data (2025–2026)
- Electricity prices from the EIA; panel decline from NREL
- Owner reports from forums, with links
No installer or brand paid to be included, and we don’t sell solar.
When Solar Isn’t Worth It
- You will move within a few years and the payback is longer than that.
- Your electricity is cheap and your utility pays little for exports.
- Your roof needs replacing soon or is heavily shaded.
- The quote assumes the old 30% credit or a very high yearly price rise. Ask for the numbers without them.
- A loan’s interest eats the savings. Compare the total loan cost, not just the monthly payment.
Frequently Asked Questions
What is a good solar payback period?
Under 10 years is generally good, since panels usually last 25–30 years. Over 15 years is weak, especially if you might move.
Can I still get the 30% federal solar tax credit?
Not for a system you own that was placed in service after December 31, 2025. Check state and utility incentives instead.
How much can you save with solar panels per year?
Often $700–$2,500 for a typical home, depending on system size, sun, your electricity price and net metering rules. Use the calculator for your case.
Does a battery shorten the payback?
Usually it lengthens it, because batteries are expensive. It can help where export credits are very low or evening prices are high.
How do I check a solar quote?
Divide the total cost by the promised yearly savings, ask for the production estimate and its assumptions, and confirm exactly how your utility credits exported power.
Our Verdict
Without the federal credit, the solar payback period depends almost entirely on where you live. With high electricity prices, good net metering or strong state incentives, solar still pays back well within the panels’ life. With cheap power and weak export credits, it may not. Run your own numbers, get at least three quotes, and check each one against the calculator.
Keep reading
- Solar Tax Credit 2026: What Ended, Who Still Qualifies and What to Do: which federal solar credits still apply.
- Best Home Battery Systems in 2026: Powerwall 3 vs Enphase vs FranklinWH: whole-home battery backup compared.
- Are Solar Panels Worth It in Texas? 2026 Costs, Buyback Plans and Payback: solar costs and buyback plans in Texas.