In case anyone needs it, here is the CEC list for power control systems and other equipment approved for use on grid conneted solar installations in California: California Energy Commission's Solar Equipment List

this is a helpful list to keep handy, for sure.

Another good source for technology providers/manufacturers that I've found to be trustworthy is the Solar Energy Industry Association (SEIA) Member directory. If you search their member directory for manufacturers and suppliers, the companies are likely to be pretty reputable since it's not cheap to be a SEIA member ~ https://www.seia.org/directory