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#10
12-07-2022, 04:59 PM
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Doing some math to compare ICE vs. EV.
Fill your car with 20 gallons of gas in ~5 mins =2.3 million BTU's in the fuel. Assume a 40% efficient engine so you get 920,000 BTU of useable transportation energy. 20 gallons x $3.50 per gallon = $70 How long to get the same energy at an electric charging station? 920,000 BTU/3413 BTU's per kWh = 269 kWh Assume EV is 90% efficient = 298 kWh's required to match 20 gallons of gas of useable transportation energy 298 kwh/480 volt fast charging station = 621 amp-hours If charger pushes 200 amps, it will take 3.1 hours to charge to the same useable transportation energy as 20 gallons of gas. Cost = 298 kWh x 15 cents = $44.80. EV is cheaper but takes LOTS longer to "refill". FWIW: Eric
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