Tidal barrage power schemes have a high capital cost and a very low running cost.

Many governments have been reluctant in recent times to grant approval for tidal barrages.

Should a tidal barrage be built across the Severn estuary?

The trapped water turns turbines as it is released through the tidal barrage in either direction.

A modern version of a tide mill is the electricity generating tidal barrage.

Another potential example of this could be used in a tidal barrage or tidal lagoon.

Tidal barrages were a viable option, but they were big, their construction time could be anything up to a decade.

Strong river water currents have led to proposals for the future construction of a tidal barrage to generate electricity and create another crossing.

Like some existing hydro schemes, some tidal barrages might be large.

The same acoustic concerns apply to tidal barrages.

The construction of weirs and tidal barrages within its habitat may affect populations in rivers.

Other threats include tidal barrages, marinas and recreational developments.

With it's completion in 1992 it became the first tidal barrage across a river in the UK.

Daisy stared at the broken tidal barrage.

The tidal barrage makes use of a seawall constructed in 1994 for flood mitigation and agricultural purposes.

Two forms of technology are being assessed by the study: tidal barrages and tidal lagoons.

Tidal barrages make use of the potential energy in the difference in height (or hydraulic head) between high and low tides.

When using tidal barrages to generate power, the potential energy from a tide is seized through strategic placement of specialized dams.

As very few tidal barrages have been built, very little is understood about the full impact of tidal power systems on the local environment.

The created reservoirs are similar to those of tidal barrages, except that the location is artificial and does not contain a preexisting ecosystem.

Imagine that there is a proposal to build a tidal barrage across an estuary and use the tidal power to generate electricity.

Tidal fences and turbines, if constructed properly, pose less environmental threats than tidal barrages.

However supporters of the scheme argue the tidal barrage could generate 5% of the UK's electricity.

In 1972, the Government undertook a study to assess the feasibility of building a tidal barrage across half of the Wash.

Mr. Eng, we're interested in your theories about the incident at the Biscay tidal barrage.