Connecticut home charging cost for the 2026 Rivian R1S Dual Large (22in)

At Connecticut's residential electricity rate of 28.82¢/kWh, a 2026 Rivian R1S Dual Large (22in) (rated 39.5 kWh per 100 miles by the EPA) costs $11.38 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. Charging at home is cheaper than gas here: 29% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Dual Large (22in) costs roughly $1,706 a year to charge at home in Connecticut, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $697 a year.

Cost of a full charge

Covering the 2026 Rivian R1S Dual Large (22in)'s EPA-rated 329-mile range takes about 129.9 kWh, which costs about $37.43 at Connecticut's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 18,583 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Large (22in) alone ranks 250 of 400 models for efficiency; Connecticut alone ranks 45 of 51 states for electricity price.

Before you install a home charger in Connecticut

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Get quotes from local electricians for Level 2 charger installation in Connecticut before deciding.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 28.82¢/kWh, Connecticut sits in the middle of the national range — the guide to why charging cost varies by state shows where.