The DC-AC-DC conversion loop does cost 15% or so. LiFePo batteries (better than NMC) 10%, and motor 10-15%. AC grid transmission losses add more.
With home solar, DC charging (hopefully bidirectional), 75%-80% efficiency to the wheel. But sure, AC grid tied charging could drop it by 20%. Still better than 60% losses.
Comparing to ICE engines, its fair to exclude transmission losses (exists in both. about 5%), and there is regen available for EV, and it doesn’t idle. My original 75% claim may be too generous, but 3x efficiency of ICE is still fair.
Evs are 75% to 90% efficient from their battery, but the real issue is solar on the grid. Its way more then 20% loss from the grid, hell 40% loss in transmission is normal around here, and that’s just last run. The issue is that its loss on every step. I think local solar is the way to go for ev charging but this is clearly about mass deployment and that means the grid.
The DC-AC-DC conversion loop does cost 15% or so. LiFePo batteries (better than NMC) 10%, and motor 10-15%. AC grid transmission losses add more.
With home solar, DC charging (hopefully bidirectional), 75%-80% efficiency to the wheel. But sure, AC grid tied charging could drop it by 20%. Still better than 60% losses.
Comparing to ICE engines, its fair to exclude transmission losses (exists in both. about 5%), and there is regen available for EV, and it doesn’t idle. My original 75% claim may be too generous, but 3x efficiency of ICE is still fair.
Evs are 75% to 90% efficient from their battery, but the real issue is solar on the grid. Its way more then 20% loss from the grid, hell 40% loss in transmission is normal around here, and that’s just last run. The issue is that its loss on every step. I think local solar is the way to go for ev charging but this is clearly about mass deployment and that means the grid.