Assumes 3%/yr rate increases, 0.5%/yr panel degradation and no federal tax credit (the 30% §25D credit ended for systems installed after Dec 31, 2025). How we calculate
Data approachEIA rates · NREL sun hours · 2026 federal policy · methodology
Going solar in Oklahoma in 2026 costs about $23,800 for a 9 kW system in Oklahoma City, and homeowners who buy a system no longer get a federal tax credit. At roughly 12 cents per kWh of offset electricity, our model puts payback at about 13 to 16 years. The numbers can still work for the right household, but they reward careful system sizing and a long stay in the home.
Oklahoma electricity is cheap by national standards. The EIA reports a 2025 residential average of 13.12 cents per kWh in Oklahoma versus 17.30 cents nationally, about 24% lower. Cheaper power means each solar kilowatt-hour saves less than it would in higher-priced states such as California or Massachusetts. Oklahoma does have a good solar resource, at about 5.4 peak sun hours per day in Oklahoma City, which helps offset the low rates.
⚖️ Policy & Net Metering
How Net Metering Works in Oklahoma (OG&E and PSO, 2026)
Quick answer: Oklahoma net metering credits solar output at the retail energy rate only up to the amount of electricity you use in a billing period. Anything beyond that is bought at the utility’s lower avoided cost.
Net metering for rooftop solar in Oklahoma is governed by 17 O.S. § 156 and Oklahoma Corporation Commission (OCC) rules at OAC 165:40-9. According to the OCC, netting your solar production against your consumption pays you at full retail energy rates, but only up to your consumption level in that billing period. Energy you use beyond your solar output is billed at your normal tariff.
Production above what you consume is “excess” generation. Utilities must purchase it at their avoided energy cost, paid or credited in the next billing cycle. In May 2019, the OCC raised the net metering size limit to 300 kW, removed an older 25,000 kWh annual generation cap and required excess to be compensated at avoided cost. Utilities may also ask the OCC to approve a fixed charge for solar customers under Senate Bill 1456 (2014), so check your utility’s current tariff.
Avoided cost is not a flat number. For OG&E and PSO it is set by a formula tied to wholesale electricity prices, so it moves over time and is typically only a few cents per kWh. That gap between retail and avoided cost is why oversizing is a weak strategy in Oklahoma: each extra kWh you export is worth much less than each kWh you use yourself.
Data visualization
Oklahoma power costs about 24% less than the U.S. average. Residential rates were 13.12 cents per kWh in Oklahoma versus 17.30 cents nationally in 2025. Source: EIA 2026.
Chart summary: Oklahoma homeowners paid 13.12 cents per kWh in 2025 against a 17.30-cent U.S. average, about 24% less. In July 2026 the gap was similar, at 14.35 cents versus 18.31 cents. Lower rates mean each solar kWh saves less, so payback runs longer than in higher-rate states.
OG&E vs. PSO vs. Co-ops: What to Verify Before Signing
Oklahoma Gas & Electric (OG&E) serves the Oklahoma City area, and Public Service Company of Oklahoma (PSO, an AEP company) serves Tulsa, Broken Arrow, Lawton and other parts of eastern and southwestern Oklahoma. Both are investor-owned utilities that operate under the OCC net metering rules described above. Their avoided-cost formulas, fixed charges, application steps and interconnection timelines are set in their own tariffs and can change, so request the current tariff and interconnection checklist before you sign a contract.
Rural electric cooperatives follow their own tariffs and may credit excess generation at little or nothing, or limit net metering to smaller systems. Your service address determines your utility, and some homes near Tulsa and Oklahoma City belong to a co-op rather than OG&E or PSO. Look at your latest electric bill to confirm who serves you, then ask them three questions:
What do you pay for excess generation, and how is that rate set?
Is there a fixed monthly charge or a different rate plan for solar customers?
What is the system size limit, and how long does interconnection take?
📈 Payback Period
Oklahoma Solar Payback Period: 9 kW Example by the Numbers
Quick answer: A 9 kW Oklahoma City system costing about $23,800 saves roughly $1,530 in year one and pays back in about 16 years if electric rates stay flat, or 13 to 14 years if rates rise 2% to 3% a year.
EnergySage reported an Oklahoma City average of $2.64 per watt in September 2026, which puts a 9 kW system at about $23,788 before incentives. With no federal credit for purchased systems, that is close to your net cost. The model below uses these assumptions:
Production: 9 kW × 5.4 peak sun hours × 365 days × 0.77 system efficiency ≈ 13,660 kWh in year one, falling 0.5% per year.
Value of solar you use: 12 cents per kWh, below the 2026 EIA average of about 13.4 cents because fixed monthly charges cannot be offset.
Self-consumption: 90% of output is netted against your use at that rate; the other 10% is exported at an assumed 4 cents per kWh.
Rate growth: 0% (conservative) and 3% per year. Oklahoma’s residential rate rose from 10.11 cents in June 2016 to 14.33 cents in June 2026, about 3.5% a year.
Not included: financing costs, insurance, maintenance and a future inverter replacement.
Data visualization
A 9 kW system in Oklahoma City costs about $23,800. Installed cost runs from $13,216 for 5 kW to $26,432 for 10 kW at roughly $2.64 per watt, with no federal credit. Source: EnergySage 2026.
Chart summary: At about $2.64 per watt, installed cost in Oklahoma City rises from roughly $13,200 for a 5 kW system to $26,400 for a 10 kW system. The orange bar marks the 9 kW example used in the payback model below. Because purchased systems get no federal credit in 2026, these figures are close to out-of-pocket cost. For state-level payback data with the ITC applied, see our guide to Solar Panel Payback Period by State. For more on this topic, see our guide to Solar Panels in Kentucky.
Using that $23,788 cost and the production and rate assumptions listed above, here is how cumulative cash flow plays out over 25 years:
Data visualization
A 9 kW system pays back in about 13 to 16 years. Cumulative cash flow starts at -$23,788 and reaches +$12,248 with flat rates or +$28,368 with 3% yearly rate growth by Year 25, with no federal credit. Source: modeled from NREL PVWatts and EIA 2026 inputs.
Chart summary: With flat electric rates, cumulative savings cross zero in Year 17 (a simple payback of about 16.1 years) and total about +$12,200 by Year 25. With 3% annual rate growth, payback falls to about 13.3 years and the 25-year net gain rises to about $28,400. EnergySage’s separate Oklahoma City estimate is about 17.9 years, so treat 13 to 18 years as the realistic range; this is a model, not a quote.
Federal Tax Credit and Oklahoma-Specific Solar Incentives
The federal homeowner credit is gone. The 30% residential clean energy credit (Section 25D) ended for expenses after December 31, 2025, under the One Big Beautiful Bill Act. If you buy a system with cash or a loan in 2026, the federal credit is $0. Some lease and power purchase agreement (PPA) providers own the equipment and may still claim a commercial credit, and some pass part of the benefit on, but that depends entirely on the contract. This is general information, not tax advice.
Oklahoma offers no statewide solar rebate or income-tax credit for homeowners, and no statewide solar renewable energy credit (SREC) market. Sources disagree on whether solar equipment qualifies for a sales tax exemption or whether added home value is exempt from property tax, so confirm both with your installer, county assessor and the Oklahoma Tax Commission before you rely on either. Some electric cooperatives and municipal utilities run their own programs from time to time, so ask yours. You can search active programs at DSIRE.
📋 Key Insights
Is Solar a Good Investment in Oklahoma Right Now?
Oklahoma sits in the middle ground. Low electricity rates, avoided-cost pricing on exports and the end of the federal credit all stretch payback. Good sun, rising electric rates and a long panel life work in the other direction. Panels are commonly warrantied for 25 years, so a 13- to 16-year payback leaves years of low electric bills afterward.
Solar tends to work best for homeowners who:
Use a lot of electricity, especially for summer air conditioning. The EIA reported average Oklahoma use of about 1,079 kWh per month in 2024.
Plan to stay in the home for 15 years or more.
Size the system to their own usage instead of exporting heavily.
Have a shade-free, south- or west-facing roof.
Battery storage is mostly about resilience here, not savings. Oklahoma has severe storms and occasional ice events, and a battery can keep essential loads running during an outage. Because Oklahoma pays only avoided cost for exports, a battery can also store midday surplus for evening use, but it adds cost, so compare it against the value of backup power for your household.
Policy can change. The OCC and utilities can revise avoided-cost formulas and fixed charges, so check the current tariff and ask your installer in writing how your quote handles rate changes. Compare at least three quotes and use the solar savings calculator to test your own numbers.
Sources and Methodology
Electricity prices: U.S. Energy Information Administration (EIA) retail price data for Oklahoma, 2025 annual and monthly 2026 values.
Net metering rules: Oklahoma Corporation Commission, Net Metering in Oklahoma (17 O.S. § 156; OAC 165:40-9); Oklahoma Renewable Energy Council summary of the May 2019 rule changes and SB 1456.
Installed cost: EnergySage Oklahoma and Oklahoma City solar cost data, September–October 2026.
Sun hours and production: NREL PVWatts-based figures for Oklahoma City (about 5.4 peak sun hours per day).
Federal credit status: Section 25D, as ended by the One Big Beautiful Bill Act (expenses after December 31, 2025).
Payback model: Green Energy Calculators analysis using the assumptions listed above. Results are estimates and will differ with your usage, roof, utility tariff and quote.
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It can be, but the payback is long. Oklahoma residential electricity averaged 13.12 cents per kWh in 2025, about 24% below the U.S. average, and the federal homeowner tax credit ended on December 31, 2025. A 9 kW system costing about $23,800 pays back in roughly 13 to 16 years in our model, depending on electric-rate growth. It makes the most sense for homeowners with high summer bills who will stay 15 or more years.
Under Oklahoma Corporation Commission rules, your solar output is netted against your use at the full retail energy rate, but only up to what you consume in the billing period. Any excess is purchased at the utility's avoided energy cost and paid or credited in the next billing cycle. Avoided cost is well below the retail rate, so sizing the system to your own usage matters. Electric co-ops can have different terms.
Not for homeowners who buy a system. The 30% residential credit (Section 25D) ended for expenses after December 31, 2025, so cash and loan purchases receive $0 federal credit in 2026. Some leases and power purchase agreements are owned by a company that may claim a commercial credit, but whether any savings reach you depends on the contract. Ask a tax professional about your situation.
EnergySage reported an Oklahoma average of about $2.60 per watt in October 2026, and about $2.64 per watt in Oklahoma City. At that price, a 9 kW system costs roughly $23,800 and a 5 kW system about $13,200 before incentives. With no federal credit, that is generally your out-of-pocket cost. Quotes vary by installer, roof and equipment, so compare at least three.
The average Oklahoma home used about 1,079 kWh per month in 2024, or roughly 12,950 kWh a year. Oklahoma City gets about 5.4 peak sun hours per day, which works out to around 1,500 kWh per installed kW per year after typical system losses. That points to about 8.5 to 9 kW, or 22 to 23 panels at 400 watts each. Shading, roof direction and your own usage will move that number.
Oklahoma solar by electric bill
See system size and payback for common monthly bills in Oklahoma.
13.58¢/kWh — Oklahoma average residential price. Source: EIA Electric Power Monthly, Table 5.6.B (year-to-date through July 2026), residential average retail price (July 2026) (EIA)
Solar production
5.3 peak sun hours/day × 0.82 system derate. Approximate state-average daily solar resource (peak sun hours) based on NREL solar resource data (NSRDB); not location-specific — use NREL PVWatts for an address-level estimate. (NREL PVWatts)
Installed price
$3.00 per watt before incentives. Blended 2026 US residential installed price used by this site; EnergySage marketplace reported about $2.60/W (mid-2026); full-market medians are higher.
Federal tax credit
$0 for homeowner-owned systems installed in 2026 — the 30% §25D credit ended Dec 31, 2025 (IRS)
Net metering
Full retail net metering — solar assumed to offset 87% of the bill. Oklahoma requires net metering for systems up to 100 kW; excess is not paid at retail.
Estimates only — not tax, legal or financial advice. Get at least three installer quotes and confirm incentives with your utility and a tax professional.