@simsa03 @sun @feld

I lived in an off-grid solar powered house in the 1980s. Later on, when "sell it back to the grid" became a thing, I read that utilities were buying the power at full retail rates. Along with all the other things mentioned in this thread, this too is a problem. As you say, who is paying for the common infrastructure if a large slice of the highest-paying customers (home users) are effectively buying zero power?

Are home users' systems cost-effective enough to break-even if the utilities start paying something similar to what they pay bulk generation plants? I don't think so, or there wouldn't need to be such high reimbursement rates to begin with.

If we want widespread home solar power generation, we're eventually going to have to redesign things to make it work without subsidies.