A nice thing about EVs is that they already have enough battery to shift their energy consumption from the powerline to whatever hour is most economical. So you can install solar panels on your house and charge your EV during peak daylight hours if you're home then, or get the company to install them over the office parking lot if you're at the office then. This eliminates the cost of storage from the cost of upgrading to solar. Even at the US's grossly inflated costs, that makes it an easy economic win.