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      10-03-2017, 12:39 PM   #11
rak299
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Drives: 2021 M3 6MT
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My PG&E rates were higher and this was marginal power, so it was charged at the top rate.
(from my notes)
At the time, the figures I saw were 85 kw-hr for 262 miles (EPA numbers). My electricity at the marginal rate was $0.35/kw-hr. The figures I saw indicated 80% actual charger efficiency, which means you need to "buy" 107 kw-hr to charge an 85 kw-hr battery. 107 kw-hr cost about $38. Gas was about $3.00, so $38 is just under 12.7 gallons. Assuming 25 mpg, I could go about 315 miles for the cost of 262 miles on electricity.

Last edited by rak299; 10-03-2017 at 01:15 PM..
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