These people mean well. Unfortunately, they are very misinformed. There is an infamous professor at (you guessed it) Berkeley who has developed a computer model which shows that the entire American grid can be fed using Solar, Wind, and Hydro as the baseline. Unfortunately, in this model, we would somehow need to increase Hydro power ten times, as most of us informed individuals know, Hydro is not that green first of all and we may have problems just maintaining the level of hydro we have now.
As for Solar and Wind, I think they have a place in the system and that could be the top of residential or Palm Springs... idk.
I like movie moments. Anyone remember "My Cousin Vinnie when he uses a playing card to illustrate the foundation of the prosecution's case? From one angle the card may look like a brick but when you look at it from the side, its just a card and obviously not a good building block. Renewables are the same. The pro-renewable tout the benefits they like and base their arguments with those facts. But when you really dig into the details, it's not a real buidling block. The numbers don't add up. Mark my words, California will be a case study in about ten years on failed public policy.