Oklahoma Gas and Electric Co

OG&E's primary EV charging rate is the SmartHours Overnight plan (tariff R-EV-TOU, Schedule 3.60), available to Oklahoma residential customers who own or lease a battery electric or plug-in hybrid vehicle. The plan runs year-round and structures peak and super off-peak periods seasonally. During the summer season (June 1 through September 30), weekday peak hours run 2:00 p.m. to 7:00 p.m. at 27.50 cents per kWh, while a super off-peak window from 11:00 p.m. to 6:00 a.m. drops to 2.70 cents per kWh. Overnight charging in that window costs roughly one-tenth the on-peak rate. A parallel commercial rate (GS-EV-TOU, Schedule 6.60) is available for general-service customers with sub-400 kW demand. Both rates were authorized by the Oklahoma Corporation Commission effective January 1, 2025, and were pilot programs that closed to new subscribers on June 1, 2026; existing enrollees remain on both tariffs.

The $250 residential EVSE rebate does not require enrollment in the SmartHours Overnight rate, but the two are clearly designed to work together: the rebate offsets the cost of a Level 2 charger, and the R-EV-TOU rate then rewards overnight charging with the lowest available per-kWh price. As of June 2025, OG&E's Oklahoma rebate applications are temporarily closed; Arkansas residential customers (in the seven service-territory counties in western and northwestern Arkansas) may still apply. There is no confirmed commercial or multifamily EVSE rebate from OG&E.

OG&E is an investor-owned utility regulated by the Oklahoma Corporation Commission for its Oklahoma service territory and by the Arkansas Public Service Commission for its Arkansas service territory. Oklahoma is not a deregulated retail electricity market; customers in OG&E's footprint cannot choose an alternative supplier. OG&E's service territory covers the Oklahoma City metro area and extends across most of the state, including rural western Oklahoma where summer peak demand and grid capacity constraints directly shape the SmartHours program design. The utility filed a general rate case that resulted in a $127 million rate increase effective 2025, so base rates underlying the TOU differentials may shift again in the next rate case, which would also determine whether the pilot EV-TOU tariffs are made permanent.