Greg Locock wrote: ↑
Sun Jan 09, 2022 10:07 pm
The problem is that you are using your hugely expensive car battery to prop up the grid, whereas a proper grid battery costs around 1/3 of a car battery per unit of storage. So the EV owner is subsidising the grid.
There are different scenarios of course. One is a very dynamic one, where you can rent out the storage in your car as a damper for the grid. This is probably what you are referring to and for a lot of people not ideal. But, for another scenario you plug in your car in at 6, knowing you want it charged at seven in the morning and the system is charging it with overcapacity of the grid. With enough cars on the grid, this should be more then enough.
A third scenario is that your car is your personal storage damper, especially when you don’t use it often. You can run your house from it and buy in power when it’s cheapest (or use your solar panels.
In a few years time discarded car batteries are probably also will be put in use for this on scale. The Amsterdam Arena already has something like this in place for concerts, where they have a ton of old leaf batteries providing the peak amps for basdrum hits. Energy suppliers charge a lot for peak power..