"I recall reading that CO2/mile for a coal powered EV is typically similar to driving a high efficiency hybrid gasoline car like a Prius, but I can't find the r

"I recall reading that CO2/mile for a coal powered EV is typically similar to driving a high efficiency hybrid gasoline car like a Prius, but I can't find the reference right now." No, that's not even close to being correct, the most efficient Prius model you can currently buy supposedly only emits 75g per km. Tesla Model 3 consumes 14.9 kWh per 100 km, coal plants in the US on average emit ~1kg of CO2 per kWh. The energy loss between the power plant and consumer seems to be between 8 and 15%. So using 8% it's 160g of CO2 per km. I'm not sure if the data reported by Tesla accounts for charger efficiency (which is at maximum 92% and might be as low as 70-80% if you're charging at home) if not that would at least another 8% making it 173g per km or more. Even a very efficient petrol car like for example WV Golf Rr 1.5 TSI is quite a bit lower than that at 116g per km. https://www.eia.gov/tools/faqs/faq.php?id=74&t=11 https://www.eia.gov/tools/faqs/faq.php?id=74&t=11 Switching to Natural gas would decrease CO2 per kWH more than twice, from 1kg to 0.41 kg per kWh would make Model 3 about even with the Prius (71 vs 75 g per km).