Swansea Bay put forward by Tidal Lagoon Swansea Bay Ltd. for a tidal lagoon to be constructed. The tidal lagoon would be sited just south of the Queen's Dock between River Tawe and River Neath estuaries. This project is controversial, partly due to the amount of subsidy required to make the project viable and also because of the potential damage to an AONB and MCZ in Cornwall where Tidal Lagoon Swansea Bay seek to re-open a disused quarry at Dean Point from which to source the rock for the lagoon. In addition to tidal power, construction of an offshore windfarm in the
Swansea in 1969, which was inherited by the Swansea district when it was formed by the merger of the borough and Gower Rural District in 1974. In 1996, Swansea became one of 22 unitary authorities with the addition of part of the former Lliw Valley Borough. The new authority received the name 'City and County of Swansea' (). Swansea was once a staunch stronghold of the Labour Party which, until 2004, had overall control of the council for 24 years. The Liberal Democrats were the largest group in the administration that took control of Swansea Council in the 2004 local elections