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Here's a fairly simple method I use to calculate the energy cost tradeoff between running in EV Now and EV Later modes for my daily commute. First, I note the kWh used for daily R/T in EV Now mode. The R/T is 9 miles (4.3 miles to/4.7 miles from - I use a different route coming home due to traffic). I use about 2 kWh per R/T. Second, I note the amount of gas I use on the same 9 mile commute in EV Later mode. I get about 45 MPG for the R/T on average. That's about 0.2 gallons for the 9 mile R/T. So, on a weekly (5-day) basis, I would use 10kWh in EV Now mode, or, 1 gallon of gas in EV Later mode. Electricity costs me just at $0.12 per kWh. Gas costs me about $2.20 per gallon (I'm in PA, home to the nation's highest gas tax!).. So, in EV Now mode, the weekly energy cost for my commute is $1.20. My gas cost is $2.20 in EV Later mode. The tradeoff is likely to be less favorable as cold weather approaches, but right now, I'm plugged in!