Solar panels are worth considering when the electricity savings justify the full cost of the system. The strongest candidates have a suitable roof, a competitive quote and enough time to benefit from the savings. A shaded roof, costly financing or plans to move soon can make waiting the better choice.
Typical paybackAbout 11 years
In most statesAbout 8 to 15 years
Cash price before incentives, with every kWh saving the average power price: the typical U.S. system (7.95 kW, $22,976, 18.2¢) and the best-case paybacks on our state cost pages (EcoGen Solar Cost Index, September 2026; EIA). “Most states” is the middle 80% of 50 states and DC. Low export credits make payback longer; incentives make it shorter. How we got these numbers.
- Roof: mostly unshaded, with years of life left before it needs replacing.
- Quote economics: yearly savings that cover the full price, at your utility’s real rates.
- Time in home: long enough to reach payback, or a clear plan for the contract if you sell.
2026 tax rule: New home solar installations completed in 2026 do not qualify for the former 30% federal homeowner credit (IRS). State and utility incentives may still help.
How we checked this guide
This guide explains how to judge solar for your own home. It does not rank states or promise savings. The worked examples use made-up round numbers so you can follow the math; they are not quotes or averages.
Tax, backup-power and financing statements link to the IRS, the U.S. Department of Energy and the Consumer Financial Protection Bureau. The writer and checker shown above are EcoGen staff. EcoGen is paid when homeowners request quotes, which is explained beside the quote form. Read our editorial standards.
When are solar panels worth it, and when should you wait?
Solar pays you back through the electricity you no longer buy. So the best fit is a home that buys a lot of power at a high rate, has a good roof, and will keep the panels long enough. Read each row across: if your home lands in the right-hand column, that is not a hard no. It is the thing to fix or check first.
Roof and sunlight
Worth a closer look
A sound roof with good sun most of the day and no major work due soon.
Pause and check
Heavy shade, or a roof that needs repair or replacement in the next few years.
Check next: a shade report, the roof’s age and the cost to remove and reinstall panels.
Electricity costs
Worth a closer look
You buy a lot of power each month at a high per-kWh rate.
Pause and check
Your usage is low or your rate is cheap, so there is little to save.
Check next: 12 months of bills: yearly kWh and the per-kWh charges, not fixed fees.
Price and financing
Worth a closer look
A competitive cash price, paid in cash or with a low-cost loan.
Pause and check
A high price, or a loan whose fees and interest eat the savings.
Check next: the cash price next to the financed price, plus APR, fees and term.
Utility export rules
Worth a closer look
Exported power earns a credit close to the retail rate.
Pause and check
Exports earn a low credit and you are away during sunny hours.
Check next: your utility’s export tariff and how credits roll over or expire.
Time in the home
Worth a closer look
You plan to stay long enough to pass the payback point.
Pause and check
You may move soon and would need to sell with a loan, lease or PPA in place.
Check next: your likely moving date and the contract’s sale and transfer terms.
How do you calculate solar payback?
Simple payback is the number of years your savings take to cover what you paid. Divide the net cost of the system by the money it saves each year.
Two terms first. A kilowatt-hour (kWh) is the unit on your electric bill. An export credit is what your utility pays for solar power you do not use and send back to the grid. Here is the whole calculation for one made-up home.
- Cash price
- $24,000
- Confirmed incentives
- $0
- Year-one production
- 10,000 kWh
- Used at home / exported
- 60% / 40%
- Retail charge you avoid
- $0.20/kWh
- Export credit
- $0.05/kWh
- Owner-cost allowance
- $200/yr
- Used-at-home value
10,000 × 60% × $0.20$1,200/yr - Export value
10,000 × 40% × $0.05$200/yr - Yearly savings after owner costs
$1,200 + $200 − $200$1,200/yr - Simple cash payback
$24,000 ÷ $1,20020 years
Now keep everything the same, but let the utility pay as much for exported power as for power you buy. Only one line changes, and the payback drops by more than six years.
| Scenario | Export credit | Export value | Yearly savings | Simple payback |
|---|---|---|---|---|
| 5¢ export credit | $0.05/kWh | $200 | $1,200 | 20 years |
| 20¢ export credit | $0.20/kWh | $800 | $1,800 | about 13.3 years |
Neither scenario describes a real utility. They show why the export rule matters so much. Real bills can be more complex: time-of-use rates charge different prices by hour, some credits expire at year end, tariffs change, and your use shifts over time. Those need a more detailed model than one division.
What it looks like over 25 years
Payback is one moment. Over the life of the panels, two things matter more: electricity prices usually rise, and the export credit sets how much each kWh is worth. This model follows an average U.S. home for 25 years. The solar lines start at the cash price; break-even is where they cross the utility line.
Staying on the utilitySolar, full creditSolar, 70% credit
| Result | Full credit | 70% credit |
|---|---|---|
| Break-even | Year 10.6 | Year 14.6 |
| 25-year difference | $50,346 | $26,325 |
Yearly numbers and assumptions
| Total spent by | Utility only | Solar, full credit | Solar, 70% credit |
|---|---|---|---|
| Year 1 | $2,061 | $23,246 | $23,864 |
| Year 5 | $11,165 | $24,442 | $27,757 |
| Year 10 | $24,749 | $26,266 | $33,513 |
| Year 15 | $41,275 | $28,587 | $40,501 |
| Year 20 | $61,383 | $31,587 | $49,038 |
| Year 25 | $85,846 | $35,500 | $59,521 |
- System and cash price: 7.95 kW for $22,976, the typical U.S. system (EcoGen Solar Cost Index, September 2026). No federal credit; no other incentives counted.
- Year-one production: about 11,330 kWh: 7.95 kW at 1,424.6 kWh per kW, the average of the state sunlight factors behind the Index.
- Home electricity use: the same 11,330 kWh, so the system covers the home’s use.
- Electricity price: 18.2¢ per kWh in year one (EIA, 2026), rising 4% a year. U.S. prices rose faster than that over the last 5 years (EIA); we cap the rise at 4%.
- Panel wear: output falls 0.5% a year.
- Upkeep: $270 a year ($34 per kW, U.S. Department of Energy cost benchmark). A planning number, not a bill.
- 70% credit case: each solar kWh is worth 70% of the price on average. That is what you get if, for example, 60% is used at home and exports earn a quarter of the price.
- Not included: loans, batteries, inverter replacement, fixed monthly charges, incentives and any home-value effect.
The 70% case shows how a lower export credit pushes break-even back about 4 years and roughly halves the 25-year gain. If prices rise slower than 4% a year, both solar lines break even later.
Try your own numbers
The tool starts with the first example. Change any box, then press Calculate. Nothing you enter is sent anywhere, and no contact details are needed.
Example result
20 years
simple cash payback
- Used-at-home value
- $1,200/yr
- Export value
- $200/yr
- Owner costs
- −$200/yr
- Yearly savings
- $1,200/yr
- Net cost
- $24,000
Flat first-year values. A real model adds rate changes, panel wear, repairs and financing.
Do not know your production or export credit? Do not guess. Ask each installer for the year-one production estimate, the share they expect you to use at home, and the export rate they assumed, with the utility tariff name. A quote that cannot answer those questions cannot support a payback number.
What changes whether solar is worth it for your home?
Six inputs drive almost every answer. For each one, here is what it changes and the document that tells you your real number.
-
Your installed price
Price is the top of the payback fraction, so every dollar counts. Compare the cash price per watt (total price divided by system size in watts) across quotes, and ask what is included. See what solar costs in each state.
Check: itemized cash price, system size in kW, equipment list.
-
Usable sunlight and roof condition
Shade, roof direction and roof angle change how much power the same panels make. If the roof needs replacing in the next few years, panels may have to come off and go back on, which costs money.
Check: the shade report, roof age, and any remove-and-reinstall cost.
-
Your electricity use and rate
Solar can only save what you would have paid per kWh. Fixed monthly customer charges usually stay, even if your panels make a lot of power. A small or very cheap bill leaves less to save.
Check: 12 months of bills, your yearly kWh, and the per-kWh charges.
-
Your utility’s export rules
Power you use at home saves the full rate. Power you export earns the utility’s export credit, which can be much lower. Making as much power in a year as you use does not mean a zero bill.
Check: your utility’s net metering or export tariff, and how credits roll over.
-
Current incentives
Since the federal homeowner credit ended, state rebates, performance payments and utility programs matter more. Count only incentives you are sure to receive, and check whether a lease or PPA company keeps them.
Check: program name, amount, who receives it, and when it is paid.
-
Your time in the home
Payback only counts if you are still there to collect the savings. If you sell sooner, what you recover depends on the buyer, and a loan, lease or PPA may need to be paid off or transferred.
Check: your moving plans and the contract’s sale and transfer terms.
Used at home: 6,000 kWh. Each one replaces power you would have bought, so it saves the full variable rate ($0.20 here).
Sent to the grid: 4,000 kWh. These earn whatever your utility pays for exports ($0.05 here). That can be far less.
Batteries change this picture, but separately. A battery can store daytime power for evening use, which raises the share used at home. It also adds cost. We cover it below, on its own, so it does not blur the panel math.
Ready to test this on your roof?
Real numbers start with a quote for your home. Bring the six checks above, and compare at least two quotes.
Solar providers that serve your area may contact you, and they pay EcoGen for the introduction. How we make money.
Is solar still worth it without the federal tax credit?
It can be, if the savings support the price without it. The 30% federal credit for homeowners (Section 25D) does not apply to systems installed after December 31, 2025. Paying a deposit in 2025 does not keep it if the installation is completed later, according to the IRS questions and answers on the 2025 law change.
Losing the credit raises the net cost, so payback gets longer at the same price. It does not decide the answer alone. A home with a high rate, good export terms and a fair price can still come out ahead. Some states and utilities offer rebates or performance payments, and these vary widely. Check current solar incentives by state and confirm each one with its program before you count it.
Tax rules for businesses and third-party owners are different. A lease or PPA company may still use business incentives; ask how that shows up in your price. This is general information, not tax advice.
How do cash, loans, leases and PPAs change the answer?
The payback math above assumes you pay cash. Other ways of paying change who owns the panels, what you pay each month and what you should check. A PPA (power purchase agreement) means you buy the power the panels make, not the panels.
| Option | Who owns the panels | Upfront | Ongoing | Check before signing |
|---|---|---|---|---|
| Cash | You | Full price | None to a lender. You pay for repairs and monitoring. | Money you tie up, and owner costs such as service and roof work. |
| Loan | You | Often $0 | Loan payment, plus any remaining utility bill. | Cash price vs financed price, APR, fees, term, and whether the payment changes. |
| Lease | Solar company | Often $0 | Monthly lease payment, plus any remaining utility bill. | Payment increases (escalator), service terms, and transfer rules if you sell. |
| PPA | Solar company | Often $0 | A price per kWh for the power the panels make. | Rate per kWh, escalator, and how exported power is credited on your bill. |
Zero upfront cost is not the same as instant payback. With a loan, compare the monthly payment with what you actually save. The Consumer Financial Protection Bureau’s 2024 solar financing report found loan fees that can be built into the price, so a financed price can be higher than the cash price.
Utility billSolar loan payment
The utility bill fell by $130 a month, but total monthly payments are $20 worse, before any owner costs.
This example is not the same home as the cash example. For loan terms, APRs and a payment calculator, see our solar financing guide. For “free solar” offers, read what free solar panels really cost.
What about batteries, repairs and selling your home?
Batteries
Ordinary grid-connected solar is not automatic outage protection. The U.S. Department of Energy explains that systems with battery storage can detect a grid outage and switch to an “islanded” mode to keep the power on. Judge a battery on two things separately: the backup you want, and any savings it adds under your utility’s rates.
Repairs and ownership
Owning panels means planning for their care. Ask what the warranties cover (panels, inverter, labor and roof leaks), who monitors the system, and who fixes it. Ask what roof removal and reinstallation would cost, and call your insurer about coverage.
Selling your home
Some buyers value solar, but the effect on your sale price is uncertain, so do not count it as payback. Owned, paid-off panels are simplest. A loan may need to be paid off, and a lease or PPA usually has to be transferred to a buyer who qualifies.
Is solar worth it in your state?
Each state guide covers local electricity prices, export rules and incentives. Your utility and your quote still decide the answer inside every state, so use the guide to know what to ask.
All 52 state guides
What should a useful solar quote show?
Get two or three itemized quotes and line them up. A quote that leaves out any of these makes the payback impossible to check.
- Cash and financed prices. Both totals, side by side, with any fees listed.
- Equipment and size. System size in kW, panel and inverter models, and any battery.
- Production estimate. Year-one kWh, the shading assumed, and the tool used.
- Utility assumptions. Your tariff name, export credit, and the utility bill you will still pay.
- Warranty and service. What is covered, for how long, and who does repairs and monitoring.
- Incentives. Each program by name, the amount, who receives it, and when.
- Finance and transfer terms. APR, term, escalators, and what happens if you sell.
Compare solar quotes for your home
Use the checklist above with each quote you get. Enter your ZIP code to request quotes from solar providers that serve your area.
How EcoGen is paid
EcoGen America does not sell or install solar. When you request quotes, we pass your request to solar providers serving your area, and they pay us for the introduction. Providers can include installers, solar marketplaces and lead exchanges, and more than one may contact you. You never pay us.
Frequently asked questions
Will I still have an electric bill with solar?
Most likely, yes. Many utilities charge a fixed monthly fee that solar cannot remove, and you still buy power at night and on cloudy days. Exported power may earn less than you pay for power you buy. Ask each installer for the utility bill they expect you to keep paying, not only the bill savings.
Is solar worth it if my electric bill is small?
Often it is harder to justify. Solar saves only what you would have paid per kWh, so a small or cheap bill leaves less to save, while installation still has a minimum cost. Compare the yearly savings on the quote with its full price. If payback runs longer than you expect to stay, waiting may be wiser.
Is solar worth it if I move in five years?
Only if the numbers still work when you sell. Few systems pay back in five years, and a higher sale price is not guaranteed. If you finance, a loan may have to be paid off and a lease or PPA transferred to the buyer. Read those terms before you sign, not when you list the house.
Are solar panels worth it without a battery?
They can be. Panels save money by replacing power you would buy, and a battery is not needed for that. A battery adds cost. It mainly helps if you want backup during outages, or if your utility pays little for exports or charges more in the evening. Price both setups and judge the battery on its own.
Can a solar loan cost more each month than it saves?
Yes. Your utility bill can drop while your loan payment adds more than you saved, so total monthly costs rise. Loans can also include fees that raise the financed price. Put your current bill next to the expected bill plus the loan payment, and compare the cash and financed prices.
How do I tell if a payback estimate is realistic?
Ask for its inputs: price, year-one production, the share you use at home, your per-kWh rate, the export credit and any yearly costs. Check that it uses your utility’s current tariff and only incentives you will really get. If it assumes fast rate rises or counts a home-value boost as savings, ask to see it without them.
Sources, method and corrections
Typical payback and range. EcoGen Solar Cost Index, September 2026 Edition. U.S.: $22,976 ÷ (7.95 kW × 1,424.6 kWh per kW × $0.182) = about 11 years. The range is the middle 80% of the best-case paybacks printed on our 51 state cost pages: about 8 to 15 years. Both value every kWh at the full average price and count no incentives, so a low export credit makes payback longer and a state or utility incentive makes it shorter.
The worked examples use round, made-up inputs so you can redo every step by hand. They are not EcoGen benchmark data, a homeowner case or a forecast. Simple payback uses flat first-year values: no rate changes, panel wear, repairs, replacement or financing. The calculator runs in your browser and sends nothing.
Spotted an error? Tell us through our corrections and feedback process. See also our editorial standards.
- IRS: FAQs on the 2025 changes to Sections 25C, 25D and other credits (homeowner credit ends for installations after December 31, 2025; checked October 5, 2026)
- U.S. EIA: Electric Power Monthly, Table 5.6.B (average home electricity price by state, January to July 2026)
- EcoGen Solar Cost Index, September 2026 Edition: solar cost by state (typical system, price and best-case payback per state)
- U.S. Department of Energy: Solar photovoltaic system cost benchmarks (upkeep of $34 per kW a year)
- U.S. Department of Energy: Solar and resilience basics (backup power needs storage and islanding equipment)
- Consumer Financial Protection Bureau: Solar financing issue spotlight, August 2024 (financing fees and cash vs financed price; its 2024 tax context is out of date)
- EcoGen: Solar incentives by state
- EcoGen: Solar Cost Index methodology

