APS EV Overnight Charging Rates & Cost Calculator

State benchmark15.38¢/kWhEIA statewide residential average

Featured utility period8.468¢/kWhEV Overnight weekday rate

Encoded tariff periods

All period choices stay inspectable; CalcuRiver never hides the rate behind a single blended number.

8.468¢/kWhSummer · Overnight off-peak11 p.m.–5 a.m. weekdays

12.345¢/kWhSummer · Off-peak5 a.m.–4 p.m.; 7–11 p.m. weekdays; weekends/holidays

36.824¢/kWhSummer · On-peak4–7 p.m. weekdays

3.495¢/kWhWinter · Super off-peak10 a.m.–3 p.m. weekdays

8.468¢/kWhWinter · Overnight off-peak11 p.m.–5 a.m. weekdays

12.351¢/kWhWinter · Off-peak5–10 a.m.; 3–4 p.m.; 7–11 p.m. weekdays; weekends/holidays

34.82¢/kWhWinter · On-peak4–7 p.m. weekdays

Season	Period	Hours	Energy price	Boundary
Summer	Overnight off-peak	11 p.m.–5 a.m. weekdays	8.468¢/kWh	APS official displayed rate.
Summer	Off-peak	5 a.m.–4 p.m.; 7–11 p.m. weekdays; weekends/holidays	12.345¢/kWh	APS official displayed rate.
Summer	On-peak	4–7 p.m. weekdays	36.824¢/kWh	APS official displayed rate.
Winter	Super off-peak	10 a.m.–3 p.m. weekdays	3.495¢/kWh	APS official displayed rate.
Winter	Overnight off-peak	11 p.m.–5 a.m. weekdays	8.468¢/kWh	APS official displayed rate.
Winter	Off-peak	5–10 a.m.; 3–4 p.m.; 7–11 p.m. weekdays; weekends/holidays	12.351¢/kWh	APS official displayed rate.
Winter	On-peak	4–7 p.m. weekdays	34.82¢/kWh	APS official displayed rate.

Use this plan in the shared calculator engine

The links preselect this utility. EV charging opens the recurring charging-window profile; other tools keep an explicit verified-period selection unless their own schedule model applies.

EV charging Appliance cost Solar retail-value

Calculation boundary. The EV plan requires an EV. The energy-rate examples exclude the separate basic service charge, adjustors, taxes, fees and any applicable Grid Access Charge.

Rate version & freshness

Version IDcr.aps.ev-overnight.2024-03-08.v1

Effective from2024-03-08

Effective toOpen / no verified end date

Last verified2026-09-28

FreshActive

This tariff snapshot is versioned and source-attributed. When a verified rate changes, CalcuRiver keeps this version in history and adds a new one instead of silently overwriting it.

Official source

APS official EV Overnight Charging plan and tariff directory

Open official plan →

Effective/source status: 2024-03-08. Reviewed Sep 28, 2026.

Automatic TOU schedule

This plan is connected to CalcuRiver’s v0.5.3 usage-time engine. A date/time or recurring charging window can be resolved through America/Phoenix into the verified season, weekday/weekend/holiday rule and versioned tariff period. Schedule status: complete with billing cycle approximation. EV charging windows are split across all applicable TOU periods and returned with an inspectable weighted-rate breakdown.

plan context

Plan vs. Arizona benchmark

State benchmark15.38¢/kWh

Lowest encoded period3.4950¢/kWh

Highest encoded period36.8240¢/kWh

Effective from2024-03-08

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: APS official EV Overnight Charging plan and tariff directory.