Quote:
Originally Posted by Dan02
That would be easy enough to handle as you could just tell your electric car not to drain beyond x% in battery so you know you have enough range for whatever you're using it for the next day.
So it could charge it up to 100% when there is excess power capacity in the grid then set a limit it won't drain beyond 75% capacity if the power is requested by the grid. For an extended range Model S this would give you the equivalent of 2 powerwalls installed in your house which is enough to power the average house for a full day and still leave you with over 400km in driving range at 75% battery capacity. If you had a long range trip coming up you could always tell it to maintain 100% charge as well.
Obviously it would be very complex but its interesting to think about what the energy grid might look like 20 years from now.
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The problem is you don't want to charge your car over 80% for the most part, so do you set it at 60%? 40%?. Then it's only a small amount of power helping the grid, and also causing wear and tear on your battery. It'd take a pretty big incentive for me to do that, but I guess when the spot price of electricity hits $999/MWh that might be enough to care. Probably not if you are only sharing a small amount though.