I’ve written before about #liquidsolar What might the rest of the renewable energy system look like?
Hydrogen might also play a part in converting the rail network to zero carbon Hydrogen trains could be used in areas where it’s uneconomic to electrify, They could potentially play a role as generators when not in motion. Decent sized hydrogen storage facilities could be constructed on mainline rail routes and provide power to gas storage facilities
There’s also a fairly new sector of gravity storage
The tower concept looks quite interesting
“The Energy Vault solution utilises the same fundamentals of physics and kinetic energy as pumped hydro but replaces the water with custom made cylindrical blocks utilising an extremely innovative use of low-cost materials.
These low-cost blocks, combined with our patented system design and some very clever control software, has allowed us to deliver all the benefits of a pumped hydro system but at a much lower price, starting size and without the need for hard to find topography.”