Ok, this is nuts. I'm was taking another look through the NEMPS FAQ and noticed this note that said "to learn more go to
Battery storage for residential customers ". And on that page is the following:
Potentially reduce your energy costs: If you are on a PG&E Time-of-Use rate or Home Charging rate, your battery can charge when electricity is cheaper and discharge for use in your home when electricity from the grid is more expensive.
Explore rates that could be beneficial for battery storage customers:
LEARN ABOUT THE HOME CHARGING (EV2A) RATE
LEARN ABOUT TIME-OF-USE RATES
So PG&E will allow ESS to charge at night on the EV2A rate plan? Well probably not as the link only mentions EV charging on that page it goes to, but that is some deceptive language.
In the FAQ at the bottom, in the "What are the benefits of pairing my home battery with solar?" it says.
On an everyday basis:
If you are on a Time-of Use-rate or Home Charging rate,
your battery can charge when electricity is cheaper and discharge electricity for home use when electricity from PG&E’s grid is more expensive. When paired with solar, a battery can help you get the most bill savings under Net Energy Metering and optimize the carbon-reduction impacts from your solar system.
It appears that one part of PG&E thinks that ESS systems are allowed to charge from the grid at night at low(er) rates, hence the need to only allow NEM credits up to the PV generation, but then another part of PG&E forbids this from happening unless it is StormWatch?.....