As much as I went with Tesla in the end, do consider other batteries such as LG Chem 9.8 kWh though
SunRun (via Costco). You likely qualify for the SGIP Credit with a 3rd Party Contractor. The 30% Federal Tax credit also can apply for the difference (less SGIP credit).
Since you are in the bay area,
Bay Area SunShares is a good program to consider.
- Peterson Dean Roofing offer the LG Chem 9.8 kWh battery "As low as $11,399"
- Skytech Solar offers "$10,800 with Solar Purchase - LG Battery"
- Sunpower offers "Energy Storage: $11,000 - Tesla Powerwall 2.0 ($500 adder if not purchased with the installation of solar.)"