Nova Innovation
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The different kinds of tidal energy technology |
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TIDAL STREAM |
TIDAL BARRAGE / LAGOON |
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Description |
TIDAL STREAMCaptures energy from the moving water in the tide using devices that look like underwater wind turbines. The flow of water causes the blades to spin and generate electricity. |
TIDAL BARRAGEInvolves building a specialised dam across the width of a river/estuary to take advantage of the change in the tide levels to produce power. A tidal lagoon works on the same principle, but the dam walls form a loop from the shore, rather than across the width of the river. |
Technology provider |
TIDAL STREAMThis the type of tidal energy Nova Innovation develops |
TIDAL BARRAGEOthers – these tend to major civil engineering infrastructure projects |
Advantages |
TIDAL STREAM- No visual impact
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TIDAL BARRAGE- Can be developed on a large scale as part of a wider infrastructure project
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Disadvantages |
TIDAL STREAMCurrently smaller scale but capacity will increase as the industry matures |
TIDAL BARRAGE- Large environmental footprint upstream and downstream of the barrage. The footprint is reduced by using lagoons, but the environmental footprint is still significant
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Progress over the last 5 years |
TIDAL STREAM- World’s first tidal turbine arrays have become operational
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TIDAL BARRAGENo new tidal barrage or lagoons have been approved or built |
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