Tidal energy harnesses the power of ocean tides by using underwater turbines that are turned by the flow of water to generate electricity. The turbines spin faster as the tide increases in speed, converting the kinetic energy of the tides into electrical energy that can be supplied to homes and businesses. While tidal energy has benefits such as being renewable and producing consistent energy without pollution, it also has challenges including high upfront costs, potential environmental impacts, and lower energy outputs compared to other sources.

1. Tidal Energy
Energy of Waves

2. What is Tidal
Energy?
• Tides are waves
heading towards or
away from the shore
• Generating energy from
wave motion

3. How does it work?
 The tide flows in two directions under the water

4. How does it work?
 When the tide flows forward, the propellers turn

5. How does it work?
 When the tide flows backwards, the propellers turn in
the opposite direction

6. How does it work?
 The faster the propellers
turn, the more energy is
created
 The generator turns the
motion energy into
useable electricity

7. How does it work?
Here is a video showing how it works
YouTube: How Tidal Energy Works

8. Where is it being used?
 La Rance, France  Annapolis, USA

9. Reasons to Use It
 Costs nothing to create energy
 Consistent wave patterns
 Renewable
 Doesn’t harm the environment with chemicals
 Lots of coastline to build
 Can be used as pillars for bridges & roadways

10. Reasons to NOT Use It
 Changing the underwater environment
 Site specific: weather, erosion etc.
 Changes the clarity of the water
 Not a lot of energy created

11. Costs
 Cost is mostly dam construction
 10 years to build
 Lasts for a long time

12. Conclusion
 We should continue to build Tidal energy stations
 Good for the environment and renewable