Energy storage technologies should come of age this decade: Other than Lithium-ion batteries there are Zinc air batteries, Redox flow batteries, Liquid air stor

Energy storage technologies should come of age this decade: Other than Lithium-ion batteries there are Zinc air batteries, Redox flow batteries, Liquid air storage, probably mechanical storages of some kind. Still a decade too early for Hydrogen but many other technologies will mature and give a boost to solar and wind. Solar still has some room to run and go much lower in cost with such low marginal costs that we will produce 3-4x of demand and throw away surplus if energy storage is not available.