I just looked at tesla's information on their website for this, our of curiosity. As I mentioned earlier, there is no way i would ever give someone else the ability to do this based on what happened to me with a similar program for thermostat control.
Anyway, in there was a blurb about how they may "prioritize solar to charge the powerwalls, if there is an upcoming anticipated vpp event. After powerwall is full, PV will go back to providing power to the home" (paraphrasing).
THAT means that people may be pulling from the grid when they were not expecting to, because the PV that would have been powering their home AND charging their powerwalls might just be charging their powerwalls..
How does anyone looking at this, even from a "green" perspective not have a problem with them basically telling you "we will likely have you use more grid while we force your PV to fully fill your powerwalls instead of both powering your home and filling the powerwalls"?
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Participate in the Emergency Load Reduction Program (ELRP) pilot offered by Pacific Gas and Electric Company (PG&E) and support the grid while also earning compensation and maintaining your energy security.
www.tesla.com
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