Written by Dean Mahmoud, CEO, and checked by Trevor Guilday, founder.Prices from the September 2026 Cost Index. Rules read September 30 and October 1, 2026. Updated October 19, 2026.
A typical Oklahoma system is 7.42 kW and costs about $19,589 cash at $2.64 per watt. At PSO our per-utility figure is at least 11.9 years, simple payback before incentives. At OG&E it pays back in about 14.3 years in our case if the power you send out is used up within the month; if it is left over, OG&E pays 3.36¢ and payback stretches to 30.3 years.
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State law (17 O.S. 156) and the Corporation Commission’s rules (OAC 165:40-9) count solar power on each monthly bill. Every kWh lands in one of three places, and each is worth a different amount.
Your solar power | What it is worth | Where you see it |
|---|---|---|
Used at home as the panels make it | Your full price for power | Fewer kWh on your bill |
Sent out, then matched by power you buy that month | Your full energy rate, up to what you use that month | Set against your use on the same bill |
Left over at the end of the month | The utility’s avoided energy cost: 3.36¢ at OG&E, posted for September 30, 2026 | A dollar credit on a later bill |
Swipe the table sideways to see every column.
Example at OG&E: in one month your panels make 1,000 kWh and your home uses 900 kWh. The 900 kWh replace power you would have bought. The 100 kWh left over earn $3.36.
| Case | Year-one savings | After upkeep | Simple payback |
|---|---|---|---|
| PSO, our per-utility figure: all output netted at 14.21¢, no upkeep counted | $1,644 | $1,644 | at least 11.9 years |
| OG&E: all power sent out is used up within the month (13.81¢) | $1,593 | $1,370 | 14.3 years |
| OG&E: all power sent out is left over at month end (3.36¢, NEBO) | $870 | $647 | 30.3 years |
Swipe the table sideways to see every column.
Most OG&E homes land between the two OG&E rows. The closer your monthly output sits to your monthly use, the closer you get to 14.3 years.
NEBO, the Net Energy Billing Option, is OG&E’s rate sheet for homes that make power. The price for leftovers is not fixed: OG&E posts a new one every day.
Posted for September 30, 2026, and used in our payback. Check OG&E’s page for the newest one. From October 1 to May 31, all leftover power earns the off-peak price.
The lowest and highest daily off-peak price in those two months.
Each price averages 30 days of wholesale cost. The one on your meter reading date is the one that counts.
A credit above $100, or carried more than 24 months, can be paid out once. Credits move with you to a new OG&E account.
OG&E lists every day’s on-peak and off-peak price on its NEBO price page. Find the row for your meter reading date on the bill. A quote that values leftover power at the price you pay for power is wrong for OG&E.
Only the energy part of the bill changes. The monthly customer charge, other line charges, fees and taxes stay.
The name at the top of your electric bill decides what your solar power earns. The state rule covers OG&E and PSO. City utilities set their own.
Oklahoma Gas and Electric. NEBO off-peak price posted for September 30, 2026. Power used within the month counts at your full rate.
Next: ask for savings at a dated NEBO price, on a named time-of-use plan.
Public Service Company of Oklahoma. The same state rule applies: full value within the month, leftovers at PSO’s avoided energy cost. PSO’s table dated September 23, 2026 credits August power, on September bills, at 3.65¢ off-peak and 3.93¢ on-peak.
Next: ask PSO for the price on your billing month and any solar-home charge.
The City of Edmond’s own utility, outside the state rule. Schedule R-DG gives no credit for power sent out and charges $30.00 a month, against $14.00 on the standard home rate.
Next: size to what your home uses as the panels make it.
The Oklahoma Corporation Commission does not regulate city-run utilities, and many co-ops set their own prices. Ask your utility for its solar rate sheet in writing before you ask for quotes.
The state rule covers systems up to 300 kW, which no home comes near. The limit that decides a home system is the second one.
Planning an electric car or a heat pump? Add the load first. OG&E can reset your peak load if your home’s use changes a lot or you change the system.
$2.64 per watt is 6th lowest of 51 states and $0.25 below the $2.89 US average. These are modeled cash prices, not quotes we collected.
System size | Yearly output | Cash price |
|---|---|---|
5 kW | 7,770 kWh | $13,200 |
7.42 kW (typical) | 11,533 kWh | $19,589 |
10 kW | 15,540 kWh | $26,400 |
The only money Oklahoma solar earns is the bill credit. Nothing pays toward the panels themselves.
No state rebate and no OG&E rebate for home panels or batteries.
Form 511-CR for 2025 lists none for home solar. Its one power credit is for wind sites built before July 1, 2017.
Charged on solar equipment (68 O.S. 1354). City and county tax can come on top.
Gone for any system you own placed in service after December 31, 2025.
Property tax: ask your county assessor how panels are treated when your home is valued, before you sign. A quote that subtracts any tax credit is wrong in Oklahoma.
Two companies that serve Oklahoma, A to Z, not ranked. Facts from their own sites, read October 13 and 14, 2026. EightTwenty’s license and Sun City’s legal name were checked in state records on October 14 and 16, 2026.
Sun City’s website still mentions a 30% federal tax credit. That credit ended for home systems placed in service after December 31, 2025. Delta Energy Solar is not listed: Oklahoma business records show Delta Energy Solar LLC as terminated in May 2025.
Ask each installer how many kWh it expects left over each month, and what price it used for them.
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. Privacy policy
CEO of EcoGen America. Since 2021 he has connected homeowners with residential solar installers in all 50 states.
About Dean
Founder of EcoGen America. He has worked in residential solar since 2016 and maintains the EcoGen Solar Cost Index.
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