In Ohio, system size matters more than any incentive. Power you send out cancels power you buy in the same billing month at the full price; what is left at month end earns far less. In our per-utility figures a typical owned system pays back in about 14.8 years statewide, about 14.0 years at Ohio Power Company (formerly AEP Ohio), the largest utility, and about 15.7 years at Ohio Edison, where part of the output is left over at month end.
Ohio, simple payback before incentivesAbout 14.8 years
Six big utilitiesAbout 13.8 to 15.8 years
Typical owned 7.84 kW Ohio system at $21,717 cash (EcoGen Solar Cost Index, September 2026), no incentives, each utility’s own EIA price less its fixed charges, and its month-end credit. No upkeep or price rises counted. See the math.
- System size: match it to your last 12 months of use, not to the roof.
- Utility: each one sets its own month-end credit.
- Supplier: a supplier on your bill can change the credit.
2026 rules: new home systems get no 30% federal homeowner credit (IRS), and Ohio has no state solar rebate or tax credit. The month-end credit for extra solar power changed on June 1, 2026 and resets every June 1.
How we checked this guide
Credit rates come from the utility tariffs filed with the state, the netting rule from the Ohio Administrative Code, and the price from the U.S. Energy Information Administration. The example is the EcoGen Solar Cost Index typical Ohio home. Assumed numbers are labelled.
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.
See what solar would save on your Ohio home
Which Ohio homes come out ahead on solar?
Nothing outside your own bill carries an Ohio payback. There is no rebate to subtract, so the return comes from the power you stop buying. Read each row across.
System size
Worth a closer look
It makes about what your home uses in a year.
Pause and check
The quote fills the roof, and summer extra earns only the month-end credit.
Check next: year-one output next to 12 months of your bills.
Utility and supplier
Worth a closer look
You are on the standard offer, and the quote names its month-end credit.
Pause and check
Your bill names a supplier or aggregation with no solar terms in writing.
Check next: the supply section of your bill.
Daytime use
Worth a closer look
Air conditioning, a home office or an EV uses power while the panels produce.
Pause and check
The house is empty all day and uses most power on winter evenings.
Check next: when your household uses power, not only how much.
Roof and time in home
Worth a closer look
A sound, unshaded roof, and you plan to stay past payback.
Pause and check
The roof needs replacing soon, or a move is likely before payback.
Check next: the roof’s age. Re-roof first, then get solar quotes.
Price and financing
Worth a closer look
A cash price near the Index’s $21,717 for 7.84 kW ($2.77 per watt).
Pause and check
A loan with a dealer fee, which adds years.
Check next: cash and financed prices side by side, with APR and fees.
See what solar would save on your Ohio home
Quotes are free. Hold each one against the payback math below.
Solar providers that serve your area pay EcoGen for the introduction. How we make money.
Ohio payback at two utilities, with part of the output left over at month end
Simple payback is the years your savings take to cover what you paid: net cost divided by yearly savings. A kWh (kilowatt-hour) is the unit on your electric bill. Here is the typical Ohio system at Ohio Power Company (formerly AEP Ohio), the largest utility, where our figures treat everything it sends out as left over at month end, credited at 10.18444 cents.
- Cash price
- $21,717
- Confirmed incentives
- $0
- Year-one production
- 10,364 kWh
- Used at home / exported
- 56.2% / 43.8%
- AEP Ohio price you avoid (EIA, 12 months to August 2026, less fixed charges)
- $0.18726/kWh
- Export credit for month-end leftovers (October 2026)
- $0.1018444/kWh
- Owner-cost allowance
- None counted
- Used-at-home value
10,364 × 56.2% × $0.18726$1,090/yr - Export value
10,364 × 43.8% × $0.1018444$463/yr - Yearly savings
$1,090.32 + $462.53$1,553/yr - Simple cash payback
$21,717 ÷ $1,553about 14.0 years
Inputs: the EcoGen Solar Cost Index typical Ohio system (7.84 kW, $21,717 cash, September 2026; 1,322 kWh per kW a year in our payback file). No rebate or tax credit is counted. The price is AEP Ohio’s 20.484¢ EIA average for September 2025 to August 2026, less its $16.34 in fixed monthly charges. The 43.8% sent out is the share reported to EIA, and our figures credit all of it at month end at 10.18444¢: AEP Ohio’s generation-related energy charges with generation riders (Schedule NEMS, Sheet 261-2), at October 2026 rider values (Sheet 452-1). No upkeep and no price rises are counted. Power used up inside the month saves the full price, so a system sized to your use can do better than this.
Now put the same panels on an Ohio Edison bill, a FirstEnergy utility. Its price is 16.557¢ after fixed charges, and 35% of the output, the share reported to EIA, is left over at month end and earns the 7.2774¢ credit. The savings drop.
| Scenario | Export credit | Export value | Yearly savings | Simple payback |
|---|---|---|---|---|
| AEP Ohio, 44% left over at month end | $0.1018444/kWh | $463 | $1,553 | about 14.0 years |
| Ohio Edison, 35% left over at month end | $0.072774/kWh | $264 | $1,380 | about 15.7 years |
The other big utilities in our figures: Duke Energy Ohio about 15.5 years, AES Ohio about 13.8, The Illuminating Company about 15.2 and Toledo Edison about 15.8. Weighted by customers, Ohio comes to about 14.8 years. A system sized to your yearly use keeps more output netted inside the month; one sized to fill the roof leaves more over at the lower credit.
Try your own Ohio quote
The tool starts with the AEP Ohio case. Enter your own quote and press Calculate; put your utility’s month-end credit in the export box to test the left-over case. Nothing you enter is sent anywhere.
Example result
14 years
simple cash payback
- Used-at-home value
- $1,090/yr
- Export value
- $463/yr
- Owner costs
- −$0/yr
- Yearly savings
- $1,553/yr
- Net cost
- $21,717
Flat first-year values; credits reset each June, and rates, panel wear and repairs will change the result.
How an Ohio bill counts the power your panels send out
Net metering means the utility bills you for the difference between the power it sends you and the power you send back. In Ohio that is settled each billing month. Inside the month, a kWh you send out cancels a kWh you take in at the full price. What is left at month end becomes a dollar credit at the energy part of the standard offer, the default power price for homes without a supplier.
Used at home: 5,822 kWh. Each one replaces power you would have bought, so it saves the full variable rate ($0.18726 here).
Sent to the grid: 4,542 kWh. Here they earn AEP Ohio’s month-end credit ($0.1018444). Power you use up inside the month saves the full price, so check your utility’s rule.
The credit depends on who delivers your power. At AEP Ohio it is 10.18444 cents per kWh in October 2026, its generation charges including generation riders. Since June 1, 2026 it is 7.2774 cents per kWh at Ohio Edison, The Illuminating Company and Toledo Edison, and about 10.86 cents per kWh at AES Ohio. Duke Energy Ohio pays 8.1218 cents per kWh in summer and for the first 1,000 kWh of a winter month, and 4.7724 cents per kWh above that, under its Rider RE in effect since June 1, 2026. If your bill names a supplier or city aggregation, its own terms apply instead. Ohio homes paid an average of 18.41¢ per kWh from September 2025 to August 2026 (EIA), so a kWh left over is worth far less than one netted inside the month.
AEP Ohio’s 10.18444 cents counts its generation riders, as its Schedule NEMS sets the credit, at October 2026 rider values. Credits carry forward; most large utilities refund up to 12 months of them on written request. No rate quoted to you this year is locked in for the life of the system.
See what solar would save on your bill
An Ohio quote should start from a year of your bills and name the month-end credit it used. Ask for both.
Solar providers that serve your area pay EcoGen for the introduction. How we make money.
Why a bigger Ohio system rarely pays more
Panels added beyond your own use make power that mostly ends up as month-end extra, paid at the lower credit. Ohio’s rule also caps a net metered system at 120% of your average yearly use over the past three years. Size the system to what the house uses, not to what the roof will hold.
Cash, a county loan, a bank loan or a lease
Paying cash gives the paybacks above. Every point of interest and every dealer fee comes out of a payback already measured in years.
| Option | Who owns the panels | Upfront | Ongoing | Check before signing |
|---|---|---|---|---|
| Cash | You | Full price | None to a lender. | A size based on your use. |
| Hamilton County HIP loan | You | Varies | A five-year loan up to $50,000, at 3% below the bank’s lowest normal rate. | Only for Hamilton County homes valued under $350,000. It is a loan, not a grant. |
| Bank or installer loan | You | Often $0 | Loan payment plus your utility bill. | Cash vs financed price. A dealer fee can add years to payback. |
| Lease or PPA | Solar company | Often $0 | A monthly payment or a price per kWh. | Whether one is offered, any yearly price increase, and the terms if you sell. |
For loan terms and a payment calculator, see our solar financing guide. Ohio exempts home solar from property tax under Ohio Revised Code 5709.53(B); if your county adds the system to your home’s value, file Form DTE 23 with the county auditor.
Six things to see on an Ohio quote
A quote that values every kWh at your full electric price overstates your savings. Check each quote for these.
- Your use, month by month. Monthly output next to a year of bills.
- Size against the rule. No more than 120% of your average use over the past three years.
- Month-end credit. The utility and credit rate assumed, with its date.
- Supplier terms. Any supplier’s solar credit terms, in writing.
- Cash and financed prices. Both totals side by side, with any dealer fee shown.
- Property tax form. Who tells you about Form DTE 23, filed with the county auditor by December 31 if needed.
See your Ohio solar savings
Ask each installer to size the system from your own bills and to name the month-end credit it used. 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. You never pay us.
More on solar in Ohio
- Ohio solar guide: utilities, incentives and installers in one place
- Ohio solar companies: compare local installers before you request quotes
- Ohio solar incentives: net metering credits and the property tax exemption
- What solar costs in Ohio
- Free solar panels in Ohio: what a zero-down offer means
- Are solar panels worth it? The national guide and payback calculator
All 51 state guides
Ohio solar payback questions
How many years does solar take to pay off in Ohio?
In our per-utility figures a typical owned 7.84 kW system at $21,717 pays back in about 14.8 years statewide, simple payback before incentives: about 14.0 years at AEP Ohio and about 15.2 to 15.8 years at the FirstEnergy utilities, where part of the output is left over at the month-end credit. There is no rebate or tax credit to shorten that. Size and utility decide where you land.
Is Ohio net metering really one for one?
Inside a billing month, yes: power you send out cancels power you take in, kWh for kWh. Extra left at month end becomes a dollar credit at the energy part of the standard offer: 10.18444 cents per kWh at AEP Ohio in October 2026, counting its generation riders, and since June 1, 2026 7.2774 cents per kWh at the FirstEnergy utilities and about 10.86 cents per kWh at AES Ohio.
Can Ohio homeowners still get the 30% federal solar tax credit?
No. The federal homeowner credit is not available for systems installed after December 31, 2025. Ohio’s 2025 income tax instruction booklet lists no state income tax credit for solar either. A quote that still subtracts a tax credit from the price is out of date, so ask for a new one.
Does a home battery pay off in Ohio?
Not on bill savings. A battery only helps with power that would otherwise be left over at month end, earning 7.2774 cents per kWh to about 10.86 cents per kWh instead of the 18.41¢ average price. One 13.5 kWh unit costs about $15,228 installed. Buy one for backup during outages and price it as insurance.
Can switching electricity suppliers change my solar credit?
Yes. The utility credits on this page are for homes on the standard offer. A supplier or city aggregation may offer its own net metering terms, and it does not have to offer any. An aggregation can enroll you without you acting, so check your bill again just before switch-on.
What size solar system does an Ohio home need?
The typical Ohio home system is 7.84 kW, making about 10,364 kWh a year, but your own bills set your size. The state rule caps net metered systems at 120% of your average yearly use over the past three years. Going bigger sends more power out at the lower month-end credit.
Sources, method and corrections
The figures come from our per-utility payback file of October 30, 2026: the EcoGen Solar Cost Index typical Ohio system (September 2026), each utility’s own EIA 12-month price (12 months to August 2026) less its fixed monthly charges, and the share of output sent out as reported to EIA. AEP Ohio and Duke are valued like the others: the share sent out as reported to EIA is left over at month end and earns the month-end credit (43.8% at 10.18444 cents at AEP Ohio, 35% at 8.1218 cents at Duke); at AES Ohio and the FirstEnergy utilities 35% is left over at the month-end credit. No upkeep and no price rises are counted. Simple payback before incentives uses flat first-year values. The calculator runs in your browser and sends nothing.
Spotted an error? Tell us through our corrections and feedback process.
- Ohio Administrative Code 4901:1-10-28: net metering
- AES Ohio: Net metering (checked October 6, 2026)
- AES Ohio: Standard Offer Rate, Sheet G10 (effective June 1, 2026)
- AEP Ohio tariff P.U.C.O. No. 22: Generation Energy Rider and Schedule NEMS (checked October 1, 2026)
- Ohio Edison tariff P.U.C.O. No. 11: Rider GEN and Net Energy Metering Rider
- Duke Energy Ohio: Rider RE, Retail Energy Rider (effective June 1, 2026; read October 19, 2026)
- Ohio Revised Code 5709.53: property tax exemption
- Ohio Department of Taxation: 2025 IT 1040 instructions (no solar credit listed)
- Hamilton County: Home Improvement Program
- U.S. EIA: average residential electricity price by state (12-month average to August 2026)
- IRS: Residential Clean Energy Credit (not available for property installed after December 31, 2025)
- EcoGen Solar Cost Index, September 2026: what solar costs in Ohio
