It's literally the main reason I bought the cybertruck. They need to enable this everywhere, immediately. If I'm already allowed to sell power back to the grid, I better be allowed to sell it from my 9x rolling powerwalls too.
You have solar AND battery backup already? (As do I)
If so, they aren't letting CTs use PowerShare yet... Not if you have solar AND batteries already anyway...
You CAN do it if you do NOT have solar OR do NOT have battery backup, but if you have both, it's still not 'available'...
Reason is, they don't want you to use 'free' solar and sell it back to the utilities during PEAK pricing times...
I already can't get more that about 25% of my PowerWalls (3's) to keep 'selling' power to SCE after about 6pm... Peak time is 4pm to 9pm, but SCE stops 'buying' power from me at about 6pm (2 hours worth instead of 5 hours)...
Of course I would LOVE to be able to CHARGE the batteries via the 'grid' (late at night when rates are cheap), but they won't allow that either...