mrvette
08-26-2022, 1:40pm
Hey, so, thought I'd put it in writing and you can copy / paste to the vette forum.
My Chevy Volt has 10 KWh of usable battery. With a charge efficiency of 0.89, which is typical for household 220v chargers, that makes 11.25 KWh I'm billed for when I charge the car.
Overnight charging, I pay 0.24 $ / KWh - 24 cents.
So it costs me 11.25 x 0.24, which = $2.70.
A gallon of gas is $4.89 locally.
So, $4.89 divided by $2.70 gives me 1.81 - that's the number of charges to equal the cost of 1 gallon of gas.
So if I travel 35 miles on a charge, which is typical, I multiply that by 1.81 to turn charge into gallons (economically)
35 miles * 1.81 = 63.39 MPG
The other way around the block is that $2.70 in charge is equal to 0.55 gallons (rounded).
35 miles divided by 0.55 gallons = 63.64 miles per gallon. So, depending on how I round off the numbers it varies a little but it's between 63 and 64 miles per gallon.
When gas was $6.09, electricity was the same price - so the electric was even better by comparison.
Driving 42 miles round trip to the office and only charging at home, I burn (typically) 0.10 gallons / day in addition to my charge.
0.10 x 4.89 = 48.9 cents worth of gas
Plus 2.70 in electricity. Total commute cost / day = $3.19, or 0.65 gallons.
42 miles / 0.65 gallons = 64.61 miles per gallon.
In my subaru, same commute would have been 1.83 gallons or $8.93.
8.93 - 3.19 = $5.74 saved / day.
Times 5 days a week for 50 weeks of the year, $1434 saved.
I'm only paying $120 / month on the car, or $1440.
So for an annual cost of $6 at current fuel prices, I'm driving a car that's 11 years newer.
The numbers move around based on price of gas, length of commute, whether or not I can charge the car for free when I get to work, etc - but I'd say that a plug-in hybrid is the way to go
My Chevy Volt has 10 KWh of usable battery. With a charge efficiency of 0.89, which is typical for household 220v chargers, that makes 11.25 KWh I'm billed for when I charge the car.
Overnight charging, I pay 0.24 $ / KWh - 24 cents.
So it costs me 11.25 x 0.24, which = $2.70.
A gallon of gas is $4.89 locally.
So, $4.89 divided by $2.70 gives me 1.81 - that's the number of charges to equal the cost of 1 gallon of gas.
So if I travel 35 miles on a charge, which is typical, I multiply that by 1.81 to turn charge into gallons (economically)
35 miles * 1.81 = 63.39 MPG
The other way around the block is that $2.70 in charge is equal to 0.55 gallons (rounded).
35 miles divided by 0.55 gallons = 63.64 miles per gallon. So, depending on how I round off the numbers it varies a little but it's between 63 and 64 miles per gallon.
When gas was $6.09, electricity was the same price - so the electric was even better by comparison.
Driving 42 miles round trip to the office and only charging at home, I burn (typically) 0.10 gallons / day in addition to my charge.
0.10 x 4.89 = 48.9 cents worth of gas
Plus 2.70 in electricity. Total commute cost / day = $3.19, or 0.65 gallons.
42 miles / 0.65 gallons = 64.61 miles per gallon.
In my subaru, same commute would have been 1.83 gallons or $8.93.
8.93 - 3.19 = $5.74 saved / day.
Times 5 days a week for 50 weeks of the year, $1434 saved.
I'm only paying $120 / month on the car, or $1440.
So for an annual cost of $6 at current fuel prices, I'm driving a car that's 11 years newer.
The numbers move around based on price of gas, length of commute, whether or not I can charge the car for free when I get to work, etc - but I'd say that a plug-in hybrid is the way to go