CleanTechnica reports:
The early February breakthrough in California energy storage rules under Net Energy Metering will still take time to be codified, but the great news is that energy from storage can be sold to utilities as long as the storage equipment meets a new Underwriters Laboratory standard. Under Time of Use rates, households with certified storage capacity can store energy during the day and sell it back to the utility during peak periods in the evening.
This sorta seems to be what Tesla Energy Sales has been promising I would be able to do since we initially started talking in November 2017. Except that I thought Powerwalls (without solar) could already do this - was it not allowed in CA? Will it still be verboten for us with solar due to the ITC?