Which factor most enhances the effectiveness of tidal stream systems?

Which factor most enhances the effectiveness of tidal stream systems?

• A. Strong tidal currents.
• B. High atmospheric pressure.
• C. Low water salinity.
• D. Limited water depth.

Answer: (A)

Tidal stream systems harvest energy from the moving water, so the speed of the current is the strongest driver of how much power you can extract. The power available in a flow grows with the cube of the current velocity, meaning even small increases in speed lead to large jumps in output. That makes strong tidal currents the key factor in effectiveness. Atmospheric pressure, salinity, and water depth matter to various design and operational considerations, but they don’t boost the energy capture in the same direct way as the actual flow speed does.

Tidal stream systems harvest energy from the moving water, so the speed of the current is the strongest driver of how much power you can extract. The power available in a flow grows with the cube of the current velocity, meaning even small increases in speed lead to large jumps in output. That makes strong tidal currents the key factor in effectiveness. Atmospheric pressure, salinity, and water depth matter to various design and operational considerations, but they don’t boost the energy capture in the same direct way as the actual flow speed does.