Does Washington, DC charge a demand charge on EV charging?

Yes — delivery bills $28.15 per kilowatt-month on GT LV (about $21.13 on the MGT LV class where DC's garage-scale sites land), on the plain monthly 30-minute maximum with no ratchet, plus supply-side transmission demand components. All-in, the modeled bundle runs about $31 per kilowatt-month — among the costlier in the covered set, priced by PJM capacity and the District's rider stack.

What is the unincorporated business franchise tax?

DC taxes the business income of partnerships and pass-through LLCs at 8.25% at the entity level — capital-intensive businesses like charging sites are squarely covered, with a $250 minimum below $1 million of receipts. The model carries the full rate on positive annual operating cash; a 30% salary allowance for owner services can lower it, and the field is editable.

How current are the modeled DC rates?

Supply is the June 2026–May 2027 SOS year, sixteen days old at research time; delivery is the 2026 rate-plan vintage. Two open items shadow them: the rate plan was remanded on appeal with hearings in October 2026, and no 2027 delivery rates are filed yet. The sales-tax step to 7% and a rider reduction both land October 1, 2026. The library re-derives at each event.

ForgeAsset / Supercharger ROI / Washington, DC

Tesla Supercharger ROI in Washington, DC

The District is deregulated, but its default supply is the strongest of any deregulated jurisdiction in the covered set: Pepco's tariff book contains no hourly-priced service at all, so every large-commercial class takes fixed seasonal supply strips procured by annual auction for a June–May year — no load threshold, no cliff, no hourly fallback. Delivery is a plain per-kilowatt charge with no ratchet. The market itself is urban and garage-scale: four Supercharger sites of eight to twelve stalls, which mostly bill one rate class below the model's canonical point — so the model derives both classes and the site-level call is a row swap. The defining tax fact is the 8.25% unincorporated business franchise tax, which reaches LLC income at the entity level.

Model a Washington, DC site

What makes Washington, DC economics distinct

Fixed supply with no trapdoor

Where Pepco Maryland puts large customers on hourly pricing and BGE cuts fixed supply at a 600-kilowatt threshold, the DC book applies its fixed SOS strips to the entire large-commercial ladder with no load cap anywhere in the rider. The modeled strips are the June 2026–May 2027 SOS year, filed and approved in May 2026; the strips re-price annually and the model re-derives each June.

A tax that follows the business, not the entity form

DC's unincorporated business franchise tax bills 8.25% of DC-source business income at the entity level — an LLC cannot pass it through, and incorporating swaps it for a corporate franchise tax at the same rate. The model carries it on the income-tax line, approximated on positive operating cash, with the $250 minimum in fixed costs. A 30% owner-salary allowance can cut the effective rate; the sales tax on hardware steps from 6% to 7% on October 1, 2026 — both disclosed.

Sized for garages, derived for both classes

DC's real Supercharger sites peak around 500–1,000 kilowatts with power sharing — below the 1,000-kilowatt floor of the canonical GT LV class — so a real site likely bills on MGT LV, whose delivery runs about $21 per kilowatt against GT LV's $28, on the same supply strips. The model derives both; choosing the class for a specific site is a row swap, not new research.

A remand, a mandate, and an expiring credit

Three clocks tick under the modeled rates: the multi-year rate plan behind current delivery rates was vacated and remanded in March 2026 (rates stand short-term; hearings October 2026), with no 2027 delivery rates yet filed. DC Law 25-262 requires large gas stations to add DC fast chargers when newly built or substantially modified. And the District's 50% alternative-fuel infrastructure tax credit — up to $10,000 per public station — expires December 31, 2026.

Utilities and tariffs modeled in Washington, DC

Utility & tariff	Energy	Demand
Pepco DC GT LV + SOS	19.6¢/kWh–20.2¢/kWh by time of day	$31.09/kW of monthly peak
Pepco DC MGT LV + SOS	18.9¢/kWh–19.5¢/kWh by time of day	$24.17/kW of monthly peak

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.

Washington, DC tax profile

Sales tax on hardware: 6%
Business personal property tax: 2.42% of equipment value (example rate)
Clean-fuels credit: no program
Per-kWh charging excise: none

District of Columbia tax defaults applied: no clean-fuels credit program exists in the District (the LCFS revenue line is $0). DC's 8.25% Unincorporated Business Franchise Tax applies to an LLC's business income at the entity level — one of two such taxes in the covered set — carried on the state income-tax line, approximated on positive annual operating cash, with the $250 minimum in fixed costs; a 30% owner-salary allowance can lower the effective rate and the field is editable. Sales tax is 6% on hardware, stepping to 7% on October 1, 2026 — the pre-step rate is carried and the field is editable — with separately stated installation labor untaxed. Business personal property bills at $3.40 per $100 of remaining value above a $225,000 exclusion — about 2.4% of cost in year one at default hardware, declining to a 25%-of-cost floor rather than zero. The District's per-kWh electricity delivery tax is already inside the modeled utility rate, and no per-kWh charging tax exists.

Washington, DC programs and incentives

AFV Infrastructure Tax Credit (DC OTR)

50% of equipment and labor costs, capped at $10,000 per publicly accessible charging station, creditable against DC franchise tax — expires December 31, 2026 for sites in service by then.

Pepco Transportation Electrification (FC1155)

Commission-approved make-ready support that authorized twenty public DC fast-charger locations plus Level 2 deployments; program-phase terms vary, and site-specific support enters the model through the grant inputs.

DDOT charging deployment (Law 25-262)

The District's EV-readiness law directs DDOT to install at least fifteen public charging stations and sets EV-ready building standards from 2027.

Washington, DC charging market

The District's four Supercharger sites are urban and garage-hosted — Wisconsin Avenue NW (a legacy 72-kilowatt site), M Street NE, Idaho Avenue NW, and Dakota Crossing NE — eight to twelve stalls each. Pepco is the District's only electric utility, so coverage is district-wide with no boundary seams inside DC. Across the lines: Arlington and Northern Virginia are covered Dominion territory, while the Maryland suburbs are Pepco Maryland — a different, uncovered tariff book — and addresses there see a named-utility notice rather than a wrong auto-selection.

Washington, DC Supercharger ROI — questions

Does Washington, DC charge a demand charge on EV charging?: Yes — delivery bills $28.15 per kilowatt-month on GT LV (about $21.13 on the MGT LV class where DC's garage-scale sites land), on the plain monthly 30-minute maximum with no ratchet, plus supply-side transmission demand components. All-in, the modeled bundle runs about $31 per kilowatt-month — among the costlier in the covered set, priced by PJM capacity and the District's rider stack.
What is the unincorporated business franchise tax?: DC taxes the business income of partnerships and pass-through LLCs at 8.25% at the entity level — capital-intensive businesses like charging sites are squarely covered, with a $250 minimum below $1 million of receipts. The model carries the full rate on positive annual operating cash; a 30% salary allowance for owner services can lower it, and the field is editable.
How current are the modeled DC rates?: Supply is the June 2026–May 2027 SOS year, sixteen days old at research time; delivery is the 2026 rate-plan vintage. Two open items shadow them: the rate plan was remanded on appeal with hearings in October 2026, and no 2027 delivery rates are filed yet. The sales-tax step to 7% and a rider reduction both land October 1, 2026. The library re-derives at each event.

Sources

Model a Tesla V4 Supercharger site in Washington, DC — payback, NPV, IRR, and a 15-year cash flow from your own inputs.

Run a Washington, DC scenario

Other states: California, North Carolina, Georgia, Oregon, Pennsylvania, Florida, Arizona, Texas, Virginia, Illinois, Michigan, Tennessee, Montana, Idaho, Kansas, Nebraska, North Dakota, South Dakota, Wyoming, New Mexico, Oklahoma, Alabama, Missouri, Wisconsin, Iowa, Indiana, Louisiana, Nevada, Washington, Ohio, Utah, New Hampshire, Kentucky, South Carolina, Massachusetts, Minnesota, New Jersey, Colorado, Maryland, Arkansas, Mississippi, West Virginia, Alaska, Hawaii, Maine, Delaware. Coverage spans forty-six states and the District of Columbia in total — see the full list.

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.