It all depends on your view of Green. My Teslfi sw tells me my last drive cost $1.68 for electric charge. Compared with 5 gallons @ $3. Equals $15. Figure i have 118k miles on Tes, havent bought any gas.
So you figure the cost to generate electricity today? Power companies are still get rich even with electric car and solar panels. In California, PGE tried to outlaw solar. In Florida the FPL tried to outlaw solar in 2016, but it got defeated.
Green is in the eye of the opinion of the activist.