Oklahoma averages just 9.7 cents per kilowatt-hour for residential electricity — roughly 24% below the national average of 12.8 cents, according to the EIA’s most recent state-level data. That single number shapes every solar calculation in the state. It doesn’t make solar a bad investment here, but it does mean you need sharper pencils than homeowners in, say, California or Massachusetts, where rates above 20 cents per kWh make panels pencil out fast. In Oklahoma, the math rewards patience and careful system sizing.
The state’s solar market is dominated by two investor-owned utilities: Oklahoma Gas & Electric (OG&E), which serves the Oklahoma City metro and eastern Oklahoma, and Public Service Company of Oklahoma (PSO), a unit of AEP that covers Tulsa and the southeastern corner of the state. Both offer net metering programs, but the compensation rates, billing mechanics, and interconnection timelines differ in ways that directly affect your return. About 28% of Oklahoma households fall under rural electric cooperatives, which operate under separate — and often less generous — net metering rules set at the co-op level.
Oklahoma also sits in one of the best solar resource zones in the country. The state averages 5.5 to 6.1 peak sun hours per day, comparable to Arizona in its southern counties. That irradiance partly offsets the low electricity rate, producing more kilowatt-hours per installed watt than most Midwest states. A 10 kW system here generates roughly 14,500 kWh per year, versus about 12,800 kWh for the same system in Ohio. More production helps, but it only matters if the utility credits that production at a fair rate.
