There are economies of scale at play here. One large powerplant will be more efficient and easier to maintain than tens of thousand small ones. Distributed sol

There are economies of scale at play here. One large powerplant will be more efficient and easier to maintain than tens of thousand small ones. Distributed solar is also a regulation nightmare. If there is a fault in a powerplant you have experienced staff on site to deal with the issue. If there is a bug in the firmware of a cheap inverter that is installed thousand of times the owners probably won't even notice until the grid maintainer rings. (I am pro-nuclear, but definitely not against solar. Still looking at a cheap balcony system once I find some time.)