In a tidal energy project, which site feature most enhances energy capture?

In a tidal energy project, which site feature most enhances energy capture?

• A. Narrow bays and estuaries with significant tidal ranges
• B. High mountains
• C. Wide open beaches with little water movement
• D. Deep inland rivers

Answer: (A)

Tidal energy capture relies on extracting energy from moving water, so the best sites are where water moves fastest and more water is flowing with the tide. Narrow bays and estuaries act like a nozzle: as the tide comes in or goes out, the constrained channel speeds up the water, increasing the turbine flow and the power they can extract. A large tidal range adds more potential energy to work with, especially for barrage-style systems, because a bigger difference between high and low water provides more head to drive turbines or store energy. In contrast, high mountains don’t enhance tidal flows, wide open beaches have little water movement, and deep inland rivers aren’t exposed to strong tidal forcing. So the combination of constricted passageways and significant tidal range makes energy capture most efficient.

Tidal energy capture relies on extracting energy from moving water, so the best sites are where water moves fastest and more water is flowing with the tide. Narrow bays and estuaries act like a nozzle: as the tide comes in or goes out, the constrained channel speeds up the water, increasing the turbine flow and the power they can extract. A large tidal range adds more potential energy to work with, especially for barrage-style systems, because a bigger difference between high and low water provides more head to drive turbines or store energy.

In contrast, high mountains don’t enhance tidal flows, wide open beaches have little water movement, and deep inland rivers aren’t exposed to strong tidal forcing. So the combination of constricted passageways and significant tidal range makes energy capture most efficient.