ed5000, I think it's a great energy-saving idea to use the solar collectors and water heater tank as a pre-heater with storage! The tankless using only 1kW is a HUGE consumption reduction. Hope this scheme continues working for you and I trust you have some automatic controls for not overheating the water that comes from the collectors (uncontrolled and at a very low flowrate my pool solar collectors are great at generating steam on a summer afternoon).
Yes, the Climate Change Credit it nice and offsets the monthly meter fee (another PG&E profit center) which had doubled a couple of years ago.
Now that May 1 has come and PG&E's revised 2019 summer rate structure has kicked in (peak of 46.4¢/kWh, at least for me on their E-6 tariff) we really need to pay attention as to when we do the laundry or charge the cars. Due to PG&E's wacky scheme, I am always above 100% of baseline (due to generation, not consumption) which kicks me into their highest tier for the entire month so my lowest nighttime rate is 27.2¢/kWh. Happily, as I generate the consumption $$ decrement at this high rate as well so my net is always in my favor, dollarwise.
PG&E has declared Chapter 11 as a result of their potential liabilities for those wildfires and there is talk of their rates doubling!
As it is, most of us are now purchasing our power from a Community Choice Aggregator (CCA) (in my case, Silicon Valley Clean Energy), with PG&E only providing the distribution. SVCE not only provides clean/renewable electricity but also pays me at market rates for what I export.
Suffice it to say, I haven't had to pay for my electricity since 2006 and, on top of that, with SVCE taking over a couple of years ago I received a check for $430 from them last year and expect around $740 this year.
My solar panels amortized themselves years ago...