Salt River Project (SRP)

SRP's EV-specific Electric Vehicle Price Plan is a time-of-use rate built around a super off-peak window from 11pm to 5am year-round, when charging is cheapest. That plan is closed to new enrollment and SRP will eliminate it as of the November 2029 billing cycle or earlier, so current enrollees keep it until then but new EV owners cannot sign up. New residential customers instead choose a standard time-of-day plan such as Conserve 6-9 p.m. and Save, where on-peak runs weekday evenings 6pm to 9pm and the lowest prices fall in the daytime super off-peak window from 8am to 3pm, so overnight charging is billed at the plan's middle off-peak price. Exact per-kWh prices change by season and through periodic adjustments.

SRP residential customers can get up to $250 on a qualifying Level 2 charger through the SRP Marketplace; chargers bought elsewhere can still qualify by application within 90 days of purchase, with a limit of two chargers per account over five years. This rebate is separate from the price plan you choose; you can take it on any residential plan. SRP EV Smart Charge is a separate managed charging program: you let SRP's partner schedule your home charging into lower-cost hours and receive a $50 enrollment bill credit plus a $50 annual credit. Commercial, multifamily, nonprofit, school, tribal and government sites use a separate track, the business EV charger rebates, which pay per-port amounts for networked Level 2 chargers and per-location amounts for DC fast chargers.

SRP is a political subdivision of Arizona governed by its own publicly elected board, not the Arizona Corporation Commission, so it sets its own rates and program rules directly. For solar customers who also drive an EV, the Electric Vehicle Export Price Plan carries no monthly demand charge and credits exported solar at a fixed 3.45 cents per kWh, which shapes how overnight charging and daytime solar interact differently than on a standard plan; that plan is also scheduled to end with the November 2029 billing cycle.