We need an entire industry of 'appliance based Rpi's to be able to act as modules in a standardly compute plug-in-form factor (just like blades) with a unit preloaded with a config and just swap out inter connects - ich that we have an appliance hub, the solar/whatever input pushes power and the distributor determines where to push or halt the power - with a selector that tells me the input costs, and output draws, such that it can have a system to auto switch to best performance.
Honywell missed the mark on the importance of thermostats on the economy.