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Arizona Public Service (APS) E-32 TOU L + Rider DCFC — EV fast-charging electricity cost

APS E-32 TOU L + Rider DCFC is the filed rate schedule ForgeAsset models for DC fast-charging sites in Arizona Public Service territory in Arizona. Energy prices at 7.8¢/kWh–9.3¢/kWh by time of day; the demand side bills $18.08/kW of monthly peak, capped at kWh ÷ 146 h. For one reference Supercharger site held constant across the whole library, that works out to 47.2¢/kWh per dispensed kWh — rank 59 of 86 filed tariffs (1 = least expensive).

Modeled rates

APS's filed DC-fast-charging pilot rider on the E-32 TOU L schedule. The parent schedule's time-of-use rates apply — separate on-peak (weekday 3–8 p.m.) and off-peak demand charges with seasonal energy prices — and the rider caps each month's billing demand at the month's metered kWh divided by 146 hours (a 20% load-factor limit), so at low utilization the demand line falls well below plain per-kW billing. Eligibility as filed: electricity consumed only by public fast chargers of 50 kW or more, separately metered, on Standard Offer service; the rider is limited to the first 500 accounts, and this row assumes enrollment. The load-factor limit steps to 15% in July 2028 and the rider sunsets after the July 2031 billing period — both inside this model's horizon — after which billing reverts to the parent schedule. Rates fold APS's adjustors plus the 5.6% state utilities transaction privilege tax; Phoenix city tax (~+3.4 points) is site-dependent and not included. A general rate case is pending — filed rates may change around early 2027.

Source: Arizona Public Service (APS) filed rate schedule. Rates are digit-verified against the utility's own filed sheets and update within two weeks of any revision; derivations are on the methodology page.

What the reference site pays here

Reference site: 8 Tesla V4 stalls at 235 kWh/stall/day (57,183 kWh dispensed per month), a 150kW per-stall demand assumption, the model's default time-of-use mix, and a 12% loss gross-up — identical to the full utility ranking, where this tariff sits at position 59 of 86.

The rest of the Arizona picture

The tariff is one layer. State taxes, incentives, clean-fuels programs, and the charging market shape the remainder — Tesla Supercharger ROI in Arizona covers them, and the US Supercharger Economics Map shows every US Supercharger over utility territories colored by this same effective-cost derivation.

Arizona Public Service (APS) E-32 TOU L + Rider DCFC — questions

What does Arizona Public Service (APS) charge for energy on E-32 TOU L + Rider DCFC?

The modeled rates are 7.8¢/kWh–9.3¢/kWh by time of day. At the model's default time-of-use mix (30% peak, 45% off-peak, 25% super-off-peak) that blends to 8.2¢/kWh.

Does E-32 TOU L + Rider DCFC carry a demand charge?

Yes: $18.08/kW of monthly peak, capped at kWh ÷ 146 h. For a reference 8-stall site at 150 kW per stall that comes to about $21,696 per month.

What does electricity cost per kWh dispensed on this tariff?

For the reference site — 8 Tesla V4 stalls dispensing 235 kWh per stall per day, with a 12% loss gross-up — the all-in utility cost works out to 47.2¢/kWh per dispensed kWh, rank 59 of 86 tariffs in the library (1 = least expensive).

ForgeAsset is software, not investment, tax, or legal advice — outputs are model estimates from your inputs, not guarantees. Rates current as of research; verify current terms with the utility's filed schedule before committing capital.