ForgeAsset / Utilities / Delmarva Power

Delmarva Power LGS-S + SOS — EV fast-charging electricity cost

Delmarva Power LGS-S + SOS is the filed rate schedule ForgeAsset models for DC fast-charging sites in Delmarva Power territory in Delaware. Energy prices at 2.8¢/kWh–4.7¢/kWh by time of day; the demand side bills $26.66/kW of monthly peak. For one reference Supercharger site held constant across the whole library, that works out to 59.7¢/kWh per dispensed kWh — rank 69 of 86 filed tariffs (1 = least expensive).

Modeled rates

Delmarva Power's Delaware large general service rate with standard offer service supply: fixed seasonal supply strips that reset each June, against interim delivery rates effective July 2026 that are subject to refund — the pending rate case's final order re-derives this row. Never-shopped customers keep fixed default supply at any size; hourly supply applies only above a 1,000-kilowatt peak-load contribution and upon returning from a third-party supplier. The demand figure folds distribution, supply, and transmission components under a weekday-window fold plus Delaware's 4.25% public utility tax, and a purchased-power credit currently offsets part of the energy rate.

The filed rate book for this territory records no EV-specific commercial rate, so the modeled cost is the standard schedule. Demand follows the model's conservative convention — 150 kW per stall billed every month, the worst-case coincident peak — so a site whose metered peak runs below that would see a lower demand line. Neither Delaware utility files a commercial EV rate.

Source: Delmarva Power 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 69 of 86.

The rest of the Delaware picture

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

Delmarva Power LGS-S + SOS — questions

What does Delmarva Power charge for energy on LGS-S + SOS?

The modeled rates are 2.8¢/kWh–4.7¢/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 3.4¢/kWh.

Does LGS-S + SOS carry a demand charge?

Yes: $26.66/kW of monthly peak. For a reference 8-stall site at 150 kW per stall that comes to about $31,989 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 59.7¢/kWh per dispensed kWh, rank 69 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.