You would think they would mention that they are one of the very top users of pumping water storage, and developers of gravity systems, but marketing and econom

You would think they would mention that they are one of the very top users of pumping water storage, and developers of gravity systems, but marketing and economics take the front row seat? Seems short sighted. Battery storage is still in it's infancy. A large fleet of electric cars would help - but it looks like all this is an afterthought.