Originally Posted by Sunnyinhollister
Originally Posted by Cujet
Bottom line: A average American powerplant consumes 1.6 gallons of fuel oil (or equiv in other fuels) to power an average EV 40 miles, for 25MPG in energy consumption! NOTE: US powerplants are significantly more efficient than the worldwide average.
Let's stop the lies about efficiency and concentrate on unnecessary energy use. We won't see any real benefits otherwise.
You are saying that it takes 1.6 gallons of fuel oil to generate 10KWH? I did not know that.
A little tangent here, but this thread is rare these days in that it actually has interested people in it.
Power station efficiency is worked in "heat rate"...how much energy it takes to get a unit of energy out the back end...turbine/generators take about 2.2KJ to get 1KJ out the generator. The boiler takes about 1.1KJ to get 1KJ to the turbine...about 2.42KJ input for 1 KJ Electricity...that's heat rate...it's the inverse of efficiency. 2.42 heat rate is about 40% thermal efficiency. It's easier to think of it in terms of conversion rates.
But we report in in GJ/MWh (MJ/KWh) as we are paid per MWh, and the heat rate gives you the measure of the energy that needs to go in to get that out.
So we usually report in terms of overall heat rate.
Generated - 40% is 9MJ/KWh (8,530 BTU/KWh)
About 5-6% of that is used in house to run the plant, so 9 becomes 9.6, or 9,100 BTU/KWh.
For Ca on a plant by plant basis
https://www.energy.ca.gov/almanac/electricity_data/web_qfer/Heat_Rates.php
And US average historical heat rates...
https://www.eia.gov/electricity/annual/html/epa_08_01.html
If anyone wants to go further, am happy to put some of the numbers into a spreadsheet and do per gallon comparisons.