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