Does Mississippi charge a demand charge on EV charging?

Yes, on both covered utilities: the modeled Entergy C-29 rate bills about $6.47 per kilowatt-month all-in on a weekday day-hours window, and Mississippi Power bills about $9.52 per kVA on the monthly all-hours peak. Neither utility files an EV-specific host rate — a proposed statewide charging schedule was checked and does not exist.

Does Mississippi tax public EV charging per kilowatt-hour?

No. The state's EV instrument is the annual registration fee ($150 for a BEV, inflation-indexed), paid by the driver. The 2025 and 2026 sessions ran market-fairness bills rather than tax bills, and no charging excise was found in either.

How current are the modeled Mississippi rates?

The Entergy row carries the July 2026 formula-rate cycle and the October 2025 Grand Gulf rider vintage, with the 7% electricity sales tax folded; the Grand Gulf rider resets each October and is the largest single mover. The Mississippi Power row carries the June 2026 sheet. Both rows re-derive on their filing clocks.

ForgeAsset / Supercharger ROI / Mississippi

Tesla Supercharger ROI in Mississippi

Mississippi splits between two covered utilities: Entergy Mississippi serves Jackson and the whole western half of the state — including the I-55 corridor down from Southaven — and Mississippi Power serves the 23 southeastern counties from Meridian to the Gulf Coast. The Entergy bill is dominated not by its 2018-vintage base sheet but by a rider stack whose largest member, the Grand Gulf nuclear rider, resets every October and moved nearly ten points year over year. Mississippi's distinctive capex quirk is the 3.5% contractor's tax on the whole installation contract, which the model carries as an exact half-rate emulation on installation labor.

Model a Mississippi site

What makes Mississippi economics distinct

October is the month that moves the bill

The modeled Entergy rate folds a fuel factor, a formula-rate adder, five percentage riders, and the Grand Gulf rider — the last at over 20% of the net monthly bill for the October 2025 through September 2026 cycle, up almost ten points from the prior year. Every component came from the utility's own filed attachments, and the October reset is the row's standing re-derive clock.

A 2026 law leveled the field for charging operators

SB 2059, effective July 2026, bars Mississippi utilities from recovering fast-charger ownership costs from general ratepayers and entitles charging providers to the same rates, terms, and conditions as comparable customers. Mississippi law also classifies charging operators as end-use customers rather than public utilities, so kWh-priced retail charging is lawful without commission jurisdiction.

The contractor's tax, emulated exactly

Mississippi taxes every non-residential construction contract above $10,000 at 3.5% of the total price — labor included — in exchange for exempting the contractor's materials. The model expresses this as half the 7% sales-tax rate applied to installation labor, an exact arithmetic emulation; the single-contract alternative would tax less, so the modeled reading is the conservative one.

County lines swing the property tax by half

Business equipment assesses at 15% of value statewide, but millage is local: Jackson city's consolidated 184 mills puts the effective rate near 2.76% of value per year — among the heaviest in the covered set — while the actual Supercharger hosts, Ridgeland and Pearl, sit in suburban counties at materially lower levies. The model defaults to the Jackson figure and the field is editable.

Utilities and tariffs modeled in Mississippi

Utility & tariff	Energy	Demand
Entergy Mississippi C-29	10.8¢/kWh flat	$6.47/kW of monthly peak
Mississippi Power LGS-LV	9.1¢/kWh flat	$9.52/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.

Mississippi tax profile

Sales tax on hardware: 7%
Business personal property tax: 2.76% of equipment value (example rate)
Clean-fuels credit: no program
Per-kWh charging excise: none

Mississippi tax defaults applied: no clean-fuels credit program exists in Mississippi (the LCFS revenue line is $0). Entity costs carry the state franchise tax at fifty cents per $1,000 of capital — about $600 per year at default capex — a conservative reading, since a partnership-taxed LLC owes none, and the tax itself phases down and is repealed for 2028; the field is editable. Sales tax is the statewide 7% on hardware, and Mississippi's 3.5% contractor's tax on the installation contract is modeled as half the 7% rate applied to installation labor — an exact emulation of the filed rule. Business personal property assesses at 15% of value times local millage — about 2.76% per year at Jackson's city rate, with the suburban Supercharger hosts running lower; the field is editable. The 7% electricity sales tax is already inside the modeled utility rates.

Mississippi programs and incentives

NEVI (federal, MDOT-administered)

Mississippi's five-year formula allocation is roughly $50 million, administered by MDOT, which holds partnership authority for privately operated stations. A specific award enters the model through the grant inputs.

Entergy Mississippi Schedule CI-1

A make-ready financing tariff — the utility builds charging infrastructure and recovers a monthly percentage of installed cost over a chosen term. A financing product rather than an incentive; not modeled.

Mississippi charging market

Mississippi carries roughly eight verified Supercharger hosts: Ridgeland and Pearl in the Jackson metro, Vicksburg on I-20 west, Southaven at the Memphis line, Meridian, Hattiesburg, Gulfport on I-10, and Tupelo on I-22. Entergy Mississippi covers the Jackson metro and the western corridors; Mississippi Power covers the Gulf Coast and southeast. Tupelo runs a TVA distributor the model does not cover, and addresses there see a named-utility notice rather than a wrong auto-selection.

Mississippi Supercharger ROI — questions

Does Mississippi charge a demand charge on EV charging?: Yes, on both covered utilities: the modeled Entergy C-29 rate bills about $6.47 per kilowatt-month all-in on a weekday day-hours window, and Mississippi Power bills about $9.52 per kVA on the monthly all-hours peak. Neither utility files an EV-specific host rate — a proposed statewide charging schedule was checked and does not exist.
Does Mississippi tax public EV charging per kilowatt-hour?: No. The state's EV instrument is the annual registration fee ($150 for a BEV, inflation-indexed), paid by the driver. The 2025 and 2026 sessions ran market-fairness bills rather than tax bills, and no charging excise was found in either.
How current are the modeled Mississippi rates?: The Entergy row carries the July 2026 formula-rate cycle and the October 2025 Grand Gulf rider vintage, with the 7% electricity sales tax folded; the Grand Gulf rider resets each October and is the largest single mover. The Mississippi Power row carries the June 2026 sheet. Both rows re-derive on their filing clocks.

Sources

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

Run a Mississippi 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, West Virginia, Alaska, Hawaii, Washington, DC, 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.