Hate to burst their bubble but propane is not "renewable".
Technically neither is Solar...when it's gone, it (and us) are gone for good!
Don't blame her for the reporter's mistakes. Propane is an on-site backup to her other systems. Don't knock it, at times I've lived "off grid" for months at a time, and enjoyed all of the modern conveniences.
Ah, but methane is: especially in that part of California, apparently.
Propane costs have also gone through the roof lately. A good friend has converted his new house back from freestanding propane to - brace yourself - baseboard electric. "You gotta be kidding me," sez I. "Nope," sez he, and shows me the numbers to prove it. He's down to a propane generator as a backup and all-electric otherwise. This is in rural Idaho. Sheesh.