> it can be made much cheaper while keeping the good quality
I'll spare you the anecdata, but the choice of bread and vegetables are specifically poor support structures on which to build your argument for centralization. They can (in some cases) be made more cheaply, but the quality suffers substantially.
Electricity, while lacking the strongly subjective "quality" dimensions of food, still suffers from long-range distribution. Transmission and stepping losses (as well as transit costs) are a large portion of why we don't have just one enormous generation center for the world. There's obviously a balance, but for the cost of land and the added loss of converting solar's DC to AC, local generation gets a little more advantage.
I'll spare you the anecdata, but the choice of bread and vegetables are specifically poor support structures on which to build your argument for centralization. They can (in some cases) be made more cheaply, but the quality suffers substantially.
Electricity, while lacking the strongly subjective "quality" dimensions of food, still suffers from long-range distribution. Transmission and stepping losses (as well as transit costs) are a large portion of why we don't have just one enormous generation center for the world. There's obviously a balance, but for the cost of land and the added loss of converting solar's DC to AC, local generation gets a little more advantage.