Futurology

30% is better than nothing and for the majority of people that number would be much higher (different power mixes and climates). It's not like power plans have to be converted before we switch to EVs or vice versa. We should be doing everything we can to reduce emissions whether that is making new solar power plants or switching from ICE vehicles to electric.

I will add that EVs don't actually solve the problem and other solutions like increasing public transportation and shifting away from car culture would have a much greater impact overall. The purpose of EVs wasn't to "save the environment", but to sell people more new, expensive vehicles with the illusion that they will save the environment while lining the pockets of those who helped to destroy it. They do help and something is better than nothing, but it still isn't enough.