I did not notice what type of grow lights they were running BF. Not positive but I don't believe they were LED's. Could be wrong though. I know in the nursery I peeked under one of the grow light hoods and saw that they were fluorescent...........but then too I've seen LED's being housed in fluorescent tube bodies............so I don't know for sure.
I too suggested a solar farm at some point. I would suspect that the company's PG&E bill is heart stopping. Right now however I would assume that the dollars are better spent elsewhere.