Wales

Ambitious tidal energy project takes a major step forward as insurance giant prepares to invest up to £100m

Landmark deal will see energy giant purchase power from cutting-edge Welsh tidal energy project

Developer Conergy to build 13.5MW plant at a disused coal mine in the Rhymney Valley

Decision comes two months after company had £10m government grant withdrawn

Auto giant switches on system designed to meet 10 per cent of Deeside factory power demand

BusinessGreen Leaders Renewable Energy Project of the Year winner reveals how clean energy was brought to one of National Trust's historic estates

Tesco asks public to vote for Scottish and Welsh charities that could benefit from £1.8m plastic bag levy funding each year

Tidal Energy Limited plans 10MW array in the wake of deploying Wales' first large-scale, free-standing generating device

Biogen's £7.5m Waen plant in Denbighshire set to produce enough electricity to power city of St Asaph

Company expects first power from world's largest tidal array to be delivered in 2016, as it eyes new sites in China, Canada and Wales