The UK government has shelved schemes to build a tidal barrage across the Severn estuary, West of London, that could have supplied 5% of the UK’s power needs. What reports are missing is the endurance of more nimble tidal turbines and other marine power devices–distributed energy devices that the UK is helping to nurture.
Barrages are essentially hydro dams that capture each high tide and generate electricity from their outflow.The first large barrage and largest currently operating crosses the estuary of the Rance River on France’s Atlantic coast, generating a peak of 240 megawatts–the scale of a large wind farm. Five competing proposals for a Severn barrage were to generate up to 40 times that much from the region’s 14-meter tides. Continue reading “UK Rejects Tidal Barrage, but Smaller Tech May Endure”