Arizona benchmark15.38¢/kWhEIA statewide average
Featured utility period3.95¢/kWhSummer super off-peak
Encoded tariff periods
Summer = May/Jun/Sep/Oct, Summer Peak = Jul/Aug, Winter = Nov–Apr.
18.85¢/kWhSummer · On-peakWeekdays 6–9 p.m.
15.06¢/kWhSummer · Off-peakAll hours outside on-peak and super off-peak
3.95¢/kWhSummer · Super off-peak8 a.m.–3 p.m. daily
40.20¢/kWhSummer Peak · On-peakWeekdays 6–9 p.m.
12.76¢/kWhSummer Peak · Off-peakAll hours outside on-peak and super off-peak
6.61¢/kWhSummer Peak · Super off-peak8 a.m.–3 p.m. daily
15.08¢/kWhWinter · On-peakWeekdays 6–9 p.m.
13.55¢/kWhWinter · Off-peakAll hours outside on-peak and super off-peak
4.32¢/kWhWinter · Super off-peak8 a.m.–3 p.m. daily
Calculation boundary. E-28 has no residential demand charge. Monthly service charge is separate and depends on residence/service tier.
Rate version & freshness
Version IDcr.srp.e-28.2026-01-01.v1
Effective from2026-01-01
Last verified2026-09-28
Automatic TOU schedule
CalcuRiver resolves SRP E-28 in America/Phoenix, including the daily 8 a.m.–3 p.m. super off-peak window, weekday 6–9 p.m. on-peak window, weekends and six observed holidays. SRP’s seasonal rates are billing-cycle based; recurring profile resolution uses calendar month as an explicit proxy.
plan context
Plan vs. Arizona benchmark
State benchmark15.38¢/kWh
Lowest encoded period3.95¢/kWh
Highest encoded period40.20¢/kWh
Effective from2026-01-01
Last verified2026-09-28
Plan typeTime-of-use
Encoded periods are used only for the contexts supported by this tariff model. CalcuRiver does not turn one TOU period into a fake all-in monthly bill.
Official source: SRP official E-28 price plan and 2026 rate book.