What it costs to charge a 2026 Porsche Taycan 4S Performance Battery in Idaho

In Idaho, home electricity runs 12.8¢/kWh — put a 2026 Porsche Taycan 4S Performance Battery's EPA-rated 38.4 kWh/100mi against that and 100 miles costs $4.92, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 69.3% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Porsche Taycan 4S Performance Battery in Idaho runs about $738 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,665 saved annually, at this mileage.

What one full charge costs

$12.4 — that's what Idaho's 12.8¢/kWh rate puts on the 96.9 kWh a 2026 Porsche Taycan 4S Performance Battery needs for its full 252-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Porsche Taycan 4S Performance Battery in Idaho ranks 4,121 for cost savings versus gas — 1 being the best deal nationally. Separately, the Porsche Taycan 4S Performance Battery ranks 225 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

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

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.