A dirty grid just means the electric car needs to be kept in service a little longer to be greener than an ICE car, but it's still well within the lifetime of t

A dirty grid just means the electric car needs to be kept in service a little longer to be greener than an ICE car, but it's still well within the lifetime of the vehicle. It's [roughly, from memory] service life of 12-18 months for a clean grid, and around 5 years for a dirty grid. The above is about how quickly the lower CO2 per mile of an EV offsets the CO2 required to build the car (which mostly means building the battery). Even with a dirty grid, EVs produce much less CO2 per mile than ICE.