Right now off-peak/late night low demand often makes the price of electricity close to “nothing”. In many places where the wind blows, it blows harder at night and not as hard during the day.

That means that there’s not so much profit to be made by a new wind farm.

Bring a bunch of EVs on the grid and plug them in at night. (Go a step further and control their charging via ‘smart meters’.)

Now, when the wind blows hard at night wind farms can profitably sell their power.

More profits means more investment dollars flowing in.

That means more wind farms and more cheap wind-electricity during peak hours which will decrease the cost of electricity to users.

—

There’s another synergy that may emerge down the road. If a bunch of EVs are plugged in during the day then EV owners can rent out part of their battery storage to the grid. (It’s already being done on a small scale in Europe.)

Someone with a 100 mile range EV and a 40 mile per day “habit” could rent out 30, 40, 50 miles of their storage, setting a minimum level not to be exceeded.

Having that storage on line would make it much easier for grid operators to manage more wind and solar on the grid. It could take the supply peaks and move them to the demand peaks.