Mississippi home charging cost for the 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)

In Mississippi, home electricity runs 15.35¢/kWh — put a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)'s EPA-rated 46.9 kWh/100mi against that and 100 miles costs $7.2, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 55.1% less than gas per mile, here specifically.

2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in): yearly cost in Mississippi

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) costs roughly $1,080 a year to charge at home in Mississippi, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,323 a year.

Filling up the 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in), in dollars

Covering the 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)'s EPA-rated 292-mile range takes about 136.9 kWh, which costs about $21.02 at Mississippi'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 13,550 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S All-Terrain Performance Dual Large Plus (20in) alone ranks 366 of 400 models for efficiency; Mississippi alone ranks 22 of 51 states for electricity price.

Before you install a home charger in Mississippi

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.

Ask a licensed Mississippi electrician to quote the install before this math becomes a real decision.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)'s cost in Mississippi. Curious how Mississippi's 15.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.