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Hawaiian Electric (HECO) Schedule P — EV fast-charging electricity cost

Hawaiian Electric Schedule P is the filed rate schedule ForgeAsset models for DC fast-charging sites in Hawaiian Electric territory in Hawaii. Energy prices at 33.8¢/kWh flat; the demand side bills $32.04/kW of monthly peak. For one reference Supercharger site held constant across the whole library, that works out to 105.1¢/kWh per dispensed kWh — rank 86 of 86 filed tariffs (1 = least expensive).

Modeled rates

Hawaiian Electric's large power schedule for Oahu — the most expensive row in the library: flat energy dominated by the oil-indexed energy cost recovery clause, which resets monthly, with the revenue balancing adjustment applied to the non-fuel components; taxes are embedded in the filed rates. The demand ratchet's mean form stays inert under a constant modeled peak, and the schedule carries a 300 kW billing floor. A capped solar-soak time-of-use pilot with roughly half this bill exists but closes to enrollment at 500 accounts and sunsets in 2027, so this row carries the standard schedule.

The utility files an EV-specific rate or pilot that this model does not assume, so the modeled electricity cost reflects the standard schedule. A site that qualified for and enrolled in that program would see a lower demand line than the one modeled here. Hawaiian Electric's Schedule EV-P is a time-of-use pilot recorded as roughly halving the bill; it closes to enrollment at 500 accounts and sunsets in March 2027, inside this model's 15-year horizon.

Source: Hawaiian Electric (HECO) 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 86 of 86.

The rest of the Hawaii picture

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

Hawaiian Electric (HECO) Schedule P — questions

What does Hawaiian Electric (HECO) charge for energy on Schedule P?

The modeled rates are 33.8¢/kWh flat. At the model's default time-of-use mix (30% peak, 45% off-peak, 25% super-off-peak) that blends to 33.8¢/kWh.

Does Schedule P carry a demand charge?

Yes: $32.04/kW of monthly peak. For a reference 8-stall site at 150 kW per stall that comes to about $38,448 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 105.1¢/kWh per dispensed kWh, rank 86 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.