I'm also in San Diego and I've also been considering the same thing. Maybe we could work together on this.
Here's what I've been thinking:
- 5 kWh of battery should be enough to offset peak 4-9pm usage (battery cost is around $200 per kWh) and will have the fastest payback
- the EV-TOU5 rate...
Another thing I think would help with reducing utility bills is replacing our heating and cooling systems with a passive solar system using the sun to keep a mass of sand very hot like an oven (this is called a sand battery) then use this for heating, and also use it for cooling because an...
Compare price to http://projectsolar.com (optional DIY install). They are the best I've found.
And Tesla Solar has a low price guarantee so maybe there's something you can do there