That's good to know. Edison always showed up when looking for programs like solar or a smart thermostat, LADWP never did. I just never lived anywhere serviced by Edison. Looking at their service map, it looks like Edison covers everywhere around LA/Glendale and covers a very large area all the way to the Nevada and Arizona border.

I wonder if there's a better cost/benefit for rolling it out to a sparsely populated (or dense pockets with large areas in between)? Where LADWP may favor new construction or something?

Edison pretty much charges 2-3x more for peak usage, 30% more for "off-peak", and 20% less for sleeping hours compared to LADWP depending on tier. So they made a bunch more money since people don't just suddenly shift all their electricity usage to after midnight. I remember there being a lot of outage when they rolled out smart metering since most people had pretty drastic increases to their electric bill.