Found it. Apparently I'm blind. That sounds great, hopefully those predictions actually happen.

I've heard of Saltwater batteries before, hopefully they live up to the promise. My grandmother lived off-grid for several years with a wind/solar/battery/diesel-for-emergencies/wood-for-heating/propane-for-cooking system. It's amazing how easy it is to generate your own electricity, the up-front cost is just a little expensive.