IMHO, the time for V2G is long past due. Here are solar curtailment data from CAISO for Sunday (worst case I’ve seen so far, but significant curtailments are happening even weekdays now. That’s 8 GW of LOST energy from 10am to 4 pm: Enough to fully charge 100,000 EVs (80KWh/car), EVERY HOUR, nearly 8 hours. This is equivalent to a million, 64 KWh EVs or the typical daily driving needs of two million EVs. This is only California, and not even all of it (if I recall correctly, CAISO doesn’t include San Diego and some other areas). This is the environmental cost of wasting the equivalent of eight nuclear power plants. These data show that CAISO could use 64 GWh of utility batteries installed TODAY. Perhaps the entire US could use 100s, maybe even 1000 GWh of batteries TODAY, not in some pie-in-the-sky future. In another five years there will likely be another 10-20 GW of solar added in California alone. What will happen then? And why is there any gas generators online?
California ISO - Supply, Today's Outlook
