well, sure, nothing is free, but costs are (sometimes) investment, and this is more an issue of politics/economy planning than tech. And with the perspective o

well, sure, nothing is free, but costs are (sometimes) investment, and this is more an issue of politics/economy planning than tech. And with the perspective of such a big development, investment everywhere, of planetary size, who will stay out of a businnes at this scale? i don't understand.. About Minesota, i will read the report, after a brief look i understant that in a state with 25%coal, 20%nuclear, 17%gas, talking of such big increase of green will cause panic to someone. About Grid, the infrastrucure is here, is necessary, and is independent from the pool of sources (green, fossil, etc..) so it's cost is not related to nature of sources, it's a long term investment to be mantained, so is unavoidable. The Storage is the open problem, here the investment are necessary and, as you say, in the long run. But to have a real long run, maybe some classic rules of the market need to be relaxed? to let the techs develop..