One thing that has been happening is that peak rate times are moving in response to solar, which has a pretty negative effect on the economics of grid attached

One thing that has been happening is that peak rate times are moving in response to solar, which has a pretty negative effect on the economics of grid attached solar. Grid attached solar is a lot more attractive when your generation is at substantially at peak rates and your morning/evening grid usage is at part-peak or off-peak rates. https://en.wikipedia.org/wiki/Duck_curve https://en.wikipedia.org/wiki/Duck_curve