Frequently Asked Questions

​Can tidal power stations be set up without a dam?
Another effective way to harness the ocean's energy is with tidal turbines. These turbines be set up like upside-down windmills in the water and capture the tide's energy that way. This is the style that SeaGen uses in Northern Ireland.

How much does it cost to run a tidal power station?
These power stations are extremely expensive to build. However, once a station has started running the cost for keeping it going is fairly low. The Rance Power State in France works at 1.5c/Kwh; this is lower than either nuclear or coal energy, which are the cheapest forms of power.



How do the tidal stations affect the life around them?

Tidal power can have an impact on its environment and surrounding organisms. Fish and sea life can be killed by the rotating blades or be trapped by a dam. This may cause some of the surrounding creatures to migrate away from the area or to travel around it if they feel threatened.



Do the power stations have an impact on the environment?

It is possible for mechanical fluids and lubricants to leak out of the engines and into the water. These chemicals can have a negative impact on the environment and harm organisms surrounding them. However, with careful maintenance this risk can be reduced substantially.



Does salt water damage the turbines?

The salt water will cause corrosion in the metal parts of a turbine. It can also be difficult to fix these systems because of their size and the fact that we are under water. But it has been found that with scheduled maintenance, these units can remain functioning properly for long periods of time. Tidal power stations can have a life of 100 years.