This has started in California in the form of a utility pilot that controls heat pump electric water heaters. I know because I'm a participant in the pilot. T

This has started in California in the form of a utility pilot that controls heat pump electric water heaters. I know because I'm a participant in the pilot. The opportunity to reduce carbon emissions is pretty massive when done at scale, because water heating accounts for 25% of home energy use in California. In general, there is a big rush of companies, both startups and established, into the DER space right now, I suspect because of both the relatively low cost of entry and the high value of the grid services (frequency regulation, peak load avoidance) they are usually bidding on.