What is the sound of one piston slapping?
What is the sound of one piston slapping?

Using the EIA’s avg residential kWh cost (Dec. ‘18), AAA’s current avg cost of regular unleaded (3/4/19), and the EPA new car avg of 22 MPG, and based on driving 15k miles per year, here’s the five-year fuel savings, by state, of replacing an average gasoline-powered car with a ‘19 Tesla Model 3 Mid-Range (rated at 27 kWh per 100 mi - numbers not yet released for $35k base model). Washington is by far the best, at just over $7900 in savings, and Rhode Island comes in last, at $3600 in savings. In 35 of 50 states, one would save $5000-6000.*

Illustration for article titled 5-Year Fuel Savings Of Going Electric, By State
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Illustration for article titled 5-Year Fuel Savings Of Going Electric, By State

*In a previous post, Tekamul brought up charge efficiency ratio: The 27 reflects how much power exists the battery to drive 100 miles. But to put that 27kWh back, you need to supply ~30kWh, as some of that power turns to heat in the cord, BMS and batteries during charging. Depending on you charge method (L1/2/3) there’s a different accepted ratio.

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So, power “loss” during charging would drop the overall savings by some percentage (up to 10%).

Clearly, gasoline and electricity prices vary season-by-season, and year-by-year, but regional differences will largely remain the same, so I thought this would be an interesting look at the differences of making this change based on where you live.

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