> There have been nearly no investment on energy storage in our history (for very obvious reasons). By "nearly no" do you mean "tens, possibly hundreds of bill

> There have been nearly no investment on energy storage in our history (for very obvious reasons). By "nearly no" do you mean "tens, possibly hundreds of billions"? Batteries alone have had tens of billions in investment in the last few years. > On amounts close to 1/3 of our daily generation capacity. What kind of mix and overproduction are you thinking of that gets you ratios that low without brownouts? I suspect that if you want to live off wind and solar you'll need a week of capacity to get no brownouts when it's still and gray for a week unless you get nameplate capacity 10x your average needs.