ForgeAsset / Supercharger ROI / Delaware

Tesla Supercharger ROI in Delaware

Delaware is deregulated the easy way: the state's SOS auction produces filed fixed-price supply strips for every customer class, large commercial included, resetting once a year each June — no quarterly re-pricing, and the hourly-pricing trapdoor exists only for a customer who leaves for a third-party supplier and returns at a peak-load contribution of 1,000 kilowatts or more. A never-shopped site keeps fixed supply at any size. Two rows cover the state: Delmarva Power's LGS-S for the I-95 corridor and coastal Route 1, and Delaware Electric Cooperative's fold-free flat rate for rural Kent and Sussex. The tax stack is the lightest in the covered set — no sales tax, no property tax on equipment, and a gross-receipts tax whose monthly exclusion zeroes out at single-site volume.

What makes Delaware economics distinct

Utilities and tariffs modeled in Delaware

Rates are digit-verified against each utility's own filed sheets and update within two weeks of any revision. Full derivations are on the methodology page.

Delaware tax profile

• Sales tax on hardware: 0%
• Business personal property tax: none
• Clean-fuels credit: no program
• Per-kWh charging excise: none

Delaware tax defaults applied: no clean-fuels credit program exists in Delaware (the LCFS revenue line is $0). Delaware levies no sales tax on equipment or installation and no tax on business personal property — both structural zeros — and LLC costs use the flat $300 annual tax. Delaware's gross receipts tax on sellers applies only above $100,000 of monthly receipts, which a single default-volume site sits well under, so the revenue line is $0; a multi-site operator whose Delaware receipts exhaust the exclusion pays roughly 0.75% on this site's revenue, and the field is editable. The 4.25% public utilities tax on the commercial electric bill is already inside the modeled utility rates; Wilmington's 2% city franchise tax applies only to service inside city limits and is not folded. No per-kWh charging tax exists in Delaware.

Delaware programs and incentives

Delaware charging market

Delaware's roughly six Supercharger sites track its two travel spines: Talleyville and the I-95 Welcome Center flagship on the northern corridor, Newark at the city's edge, Dover on US-13, and two Rehoboth Beach sites on coastal Route 1. Delmarva Power covers the Wilmington metro, the I-95 corridor, and the Lewes–Rehoboth strip; the co-op covers rural Kent and Sussex. Nine municipal systems — Dover among them, host to a flagship site — run their own utilities and appear as named holes with a notice rather than a wrong auto-selection.

Delaware Supercharger ROI — questions

Does Delaware charge a demand charge on EV charging?

Yes, on both rows: Delmarva's LGS-S runs about $26.66 per kilowatt-month all-in across delivery, supply, and transmission components, while the co-op's flat rate bills about $14.54 all-in on the current-month peak with no ratchet. Neither utility files a commercial EV rate.

Does a large site lose fixed-price supply in Delaware?

Not by staying put. Hourly-priced service is mandatory only for a customer with a capacity peak-load contribution of 1,000 kilowatts or more who returns to utility supply after shopping — a never-shopped SOS customer keeps the annual fixed strips at any size, and a forced-hourly customer may re-elect fixed SOS after twelve months.

What taxes apply to a charging site in Delaware?

Almost none at the site level: no sales tax on equipment or labor, no business personal property tax, no charging excise. The flat $300 LLC annual tax applies, the 4.25% public utilities tax rides the electric bill inside the modeled rates, and the seller-side gross receipts tax reaches only operators above $100,000 of monthly Delaware receipts.

Sources

• Delmarva Power — Delaware electric tariff
• Delaware Electric Cooperative — tariff (June 2026)
• Delaware Division of Revenue — gross receipts tax
• AFDC — Delaware laws & incentives for electricity

ForgeAsset is software, not investment, tax, or legal advice — outputs are model estimates from your inputs, not guarantees. Rates and programs current as of research; verify current terms with each source before committing capital.