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Last Updated: Thursday, 29 July, 2004, 17:21 GMT 18:21 UK
City's sea energy power plan
St David's Cathedral
Electricity produced could power the city of St David's
Sea power may be harnessed to generate enough renewable electricity to power the UK's smallest city.

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 gravitational pull.

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 generator.

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% by 2010.

Support for more wind farms
13 Jul 04  |  North East Wales
Go-ahead for offshore wind farm
07 Jul 04  |  Wales
Tidal power plan for Swansea Bay
24 Nov 03  |  South West Wales
Tidal energy turbine launches
16 Jun 03  |  Devon
Changing the face of energy
24 Feb 03  |  Business

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