Tidal energy is a renewable energy source produced by the natural rise and fall of tides. Studies carried out by the Sustainable Energy Authority of Ireland (SEAI) have shown that Ireland has the potential to generate up to 75% of its electricity from tidal energy. Ringaskiddy in Cork and Galway Bay have been chosen as the locations where tidal energy can be tested and developed.
In 2021, Galway-based company ÉireComposites was awarded an EU grant of €3 million to develop a new underwater turbine that generates clean energy from tides.
Advantages
Tides easily predictable Reliable and renewable source of energy Produces no atmospheric emissions or other waste
Disadvantages
Construction of power plants expensive Negative influence on marine life forms Location limits Strength of sea waves unreliable
11. How tidal energy works
Environmental Benefits
Tidal energy has many environmental benefits. The tides are easy to predict, which allows for the maximum amount of energy to be created.
It is not expensive to maintain. It produces no atmospheric emissions or other waste.
Why would a sheltered bay be a poor location for a turbine? Managing information and thinking
Question Time 1. Briefly explain the environmental and economic benefits of tidal energy for Ireland.
2. Can you think of any disadvantages of tidal energy? (Consider the maintenance involved in tidal energy systems because of their location.)
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Economic Benefits
If tidal energy generators were installed around the coast, the government would spend less on imported energy sources.
Jobs would be created in areas such as research, construction, operation and maintenance of these turbines.