A major drawback of tidal power stations is that they can only generate when the tide is flowing in or out – in other words, only for 10 hours each day. However, because tides are totally predictable, it can be arranged for other power stations tp generate at those times when the tidal station is out of action. Another problem concerns the ecological effect that tidal barrages may have the estuaries they span.
The largest tidal power station in the world, and the only one in Europe, is in the Rance estuary in northern France. It was built in 1966.
Related category• WATER POWER
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