> I have not yet been able to find any explicit rules on PG&E's site explaining how time of use and net metering interact. (And for that matter, PG&E goes to nearly excessive length to avoid describing how anything works, what the actual rates and charges are, or generally putting the most useless pablum on their website.)

PGE explains this for retail customers right here: https://www.pge.com/en_US/residential/solar-and-vehicles/gre...

The various rate schedules for the different NEM interconnections are also published and easily found. e.g. for NEM2 - https://www.pge.com/en_US/for-our-business-partners/intercon... (the actual tariff is on the pdf link on the right hand side - https://www.pge.com/tariffs/assets/pdf/tariffbook/ELEC_SCHED...). Each rate will have some text like this which describes what the rate is.

> All rates charged under this schedule will be in accordance with the eligible customer-generator’s PG&E otherwise-applicable metered rate schedule (OAS).

So if you are a PGE customer on the E-TOU-C rate schedule, NEM2 (roughly) credits your excess generation under that schedule. Part of this should hopefully move new home-owners to either install batteries or if that is cost prohibitive, install west-facing panels.