Charging a 2026 Tesla Model 3 Standard RWD at home in Rhode Island
At Rhode Island's residential electricity rate of 29.45¢/kWh, a 2026 Tesla Model 3 Standard RWD (rated 24.3 kWh per 100 miles by the EPA) costs $7.16 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 55.3% cheaper per mile than gasoline in Rhode Island — charging at home is much cheaper than gas here.
Annual cost, at 15 thousands miles a year
Rhode Island owners putting 15,000 annual miles on a 2026 Tesla Model 3 Standard RWD spend about $1,074 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,329 saved annually, at this mileage.
Filling up the 2026 Tesla Model 3 Standard RWD, in dollars
At Rhode Island's rate, fully covering this 2026 Tesla Model 3 Standard RWD's 321-mile EPA range costs about $22.98 (78 kWh) — the energy the EPA test actually used, not the battery's rated size.
How this compares nationally
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Tesla Model 3 Standard RWD in Rhode Island ranks 13,460 for cost savings versus gas — 1 being the best deal nationally. Separately, the Tesla Model 3 Standard RWD ranks 2 of 400 EV models for raw efficiency, and Rhode Island ranks 47 of 51 for cheapest residential electricity.
Before you install a home charger in Rhode Island
Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.
Line up a few Rhode Island electrician quotes for Level 2 install before you commit either way.
More on how this number was built
Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Rhode Island has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.