Figure 92 is an aerial photograph of a tidal barrage which, from the air, looks like a bridge or causeway with a four lane dual carriageway along its top. The barrage is 750 metres long and about half of its length is the power plant containing 24 turbines but none of the power generation technology is visible in this photograph. The water on one side of the barrage is clearly agitated.

 5.7 Types of renewable energy