UK start-up RheEnergise reappeared on our radar this week, following several appearances in the mainstream media and with an outrageously successful crowdfunding effort on Crowdcube; it’s already raised seven times more than it had aimed for, 17 days ahead of its funding deadline. While much of this success can be pinned on the company’s technology, some credit must be attributed to the surge in influence of climate conscious retail investors. RheEnergise’s technology adopts a process which is essentially identical to traditional pumped-hydro, allowing energy to be stored as gravitational potential in an upper reservoir, before its kinetic energy is harnessed as electricity when water flows through turbines down to a lower reservoir. At times of low energy demand, when there…