SSE Renewables, part of British utility SSE PLC (<a href="https://www.londonstockexchange.com/stock/SSE/sse-plc/company-page" target="_blank">LON:SSE</a>), in partnership with a group led by Gilkes Energy, on Monday unveiled a plan to build one of the largest pumped-storage hydro (PSH) stations in the UK -- a project in Scotland with a targeted capacity of up to 1.8 GW/37 GWh.