[chopin]

> claims that this breakthrough could allow around 700 sites across the country to play host to their high-intensity hydro projects, which in theory could create a total of 7GW of energy storage to help the UK use more renewable electricity

I did a back of the napkin calculation on this, assuming the article meant 7 GWh. That'd require roughly 4 pools per installation (assuming 50m x 20m x 2m for one). However the article is constantly mixing up energy and power.

I think it has debunked many times that gravity storage may solve our energy storage needs. Gravity is just to weak for that. You literally would need to move mountains for that.