While wind and solar are showing unprecedented growth and financial success, whatever happened to the power of the wave and other water flows? In the UK there was a huge about-turn over cost fears when the Swansea tidal lagoon was cancelled by government in June 2018 on fears of costly and rising subsidies. Now the same company Tidal Power Plc, is taking another deal in Liverpool, to the next stage. It is targeting a build within 6 years and would make Liverpool and its Mersey River and Liverpool Bay, one of the world leaders in tidal power. Back in February the Swansea tidal lagoon project was also found to be back on the cards, with talks that it can be…