[njb311]

I remember seeing an episode of Tomorrow’s World (BBC) in the 1980s where more or less this system was used to generate electricity from anywhere there was a change of water height, so even in small scale at weirs which was the demonstration project. It’s quite possible the TV piece was aired showcasing an implementation of Well’s original work, as it captured energy from air that switched directions forced by water moving through a tube, and power was generated in both phases.

There are obviously countless inventions that never make it for one reason or another, timing can be the biggest issue if investment policy is not pointing in the right direction to develop them further, and I suspect a lot of solutions for environmental problems fell into this hole in the last century when economic growth at any cost was the mantra. Hopefully more of the work that was done then might resurface.