Why is tidal energy considered intermittent?

Why is tidal energy considered intermittent?

• A. It only generates power when tides are moving in or out
• B. It depends on wind speed
• C. It relies on sunlight
• D. It runs continuously irrespective of tides

Answer: (A)

Tidal energy is intermittent because it depends on the movement of ocean water created by tides. The turbines only generate power when water is flowing, during the flood (incoming tide) and the ebb (outgoing tide). When water is near high or low tide, the flow slows to a crawl—slack tide—so generation drops to nearly zero. Since tides rise and fall in roughly a semi-diurnal cycle, this creates a repeating, time-based pattern of production rather than a constant output. This isn’t driven by sunlight or wind in the same way as solar or wind energy, and it won’t run continuously regardless of tides.

Tidal energy is intermittent because it depends on the movement of ocean water created by tides. The turbines only generate power when water is flowing, during the flood (incoming tide) and the ebb (outgoing tide). When water is near high or low tide, the flow slows to a crawl—slack tide—so generation drops to nearly zero. Since tides rise and fall in roughly a semi-diurnal cycle, this creates a repeating, time-based pattern of production rather than a constant output. This isn’t driven by sunlight or wind in the same way as solar or wind energy, and it won’t run continuously regardless of tides.