What we do have here in Cali is a device that SCE will put on your AC that allows them to cut power during peak times if necessary. They give you a discount on your bill (which is pretty decent) for allowing them to install it.
I've had one on my AC for a few years now and have never had it knock down the AC, but I'm at work all day so I wouldn't really know if they had.
It's a little box that attaches on or near the compressor and has a little indicator light on it, and a short run of liquid-tite over to the make-up enclosure on the compressor. Oh, have I been tempted to crack it open and take a look at the components within? You bet ya! But I'm pretty sure my curiosity would cost me, so I'm just guessing it's a remote operated disconnect that can be activated from the office.
PG&E used to have that program, not sure if they still do.
