Sea power may be harnessed to generate enough renewable electricity to power the UK's smallest city.
Electricity produced could power the city of St David's
Developers plan to put five turbines in Ramsey Sound, off Pembrokeshire, to produce electricity from tidal power.
The company behind the scheme, Tidal Hydraulic Generators, claim it will generate enough clean electricity to power St David's, population 1,600.
The plan is the latest in a series of schemes for renewable energy being considered for the Welsh coastline.
Earlier this month, Welsh assembly members backed plans for a large wind farm off the south Wales coast.
After a public inquiry, the assembly's planning committee approved proposals for 30 400ft turbines at Scarweather sands off Porthcawl.
A renewable energy charity is also in the early stages of a project which could see tidal energy turbines built off the coasts of Swansea and Rhyl.
Renewable energy describes an energy source that occurs naturally in the environment and can be
harnessed from the sun, the wind, rivers and seas.
A tidal energy scheme, such as that planned for St David's,
exploits the regular ebb and flow of coastal waters caused by
If the St David's scheme goes ahead, each turbine would resemble a ship's propeller and will be turned by
the power of the tide. The turbine is connected to an electric
About 4% of the UK's electricity supply comes from renewable sources, and UK government targets require this level to be increased significantly in coming years.
More than 70% of the UK's electricity supply comes
from finite sources such as oil and gas, with an additional 21.5% being generated by the nuclear power sector.
The government has set a target that by 2020, 20% of the
UK's electricity requirements should be met by renewable
energy with intermediate targets of 5% by 2005 and 10%