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Cons of Tidal Energy

Cons of Tidal Energy. Tiffany Giannotti 8-L. About the Tidal Energy. Tidal energy is a renewable resource of energy produced by harnessing the kinetic energy of ocean currents and tides Today, tidal energy is harnessed by building a huge dam across the river estuary

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Cons of Tidal Energy

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  1. Cons of Tidal Energy Tiffany Giannotti 8-L

  2. About the Tidal Energy • Tidal energy is a renewable resource of energy produced by harnessing the kinetic energy of ocean currents and tides • Today, tidal energy is harnessed by building a huge dam across the river estuary • Tidal energy is used from the gravitational forces between the moon, sun, and the earth • Types • Tidal Barrages • Tidal Fences • Tidal Turbines

  3. Table of contents Economic Concerns Environmental Concerns Map Availability

  4. Environmental Concerns… • Tidal Power Plants that use dam estuaries can block sea life migration • Silt build up can impact local ecosystems • Tidal fences can disturb sea life migration • Can disrupt movement of large marine animals • A tidal station can harm plants and animals in the estuary • Tidal barrages can change the tidal level in the basin • Tidal barrages can increase turbidity • Tidal barrages can affect navigation and recreation

  5. Economic concerns… • Construction costs a lot and has highly lengthened payback periods • Cost per kilowatt-hour of tidal energy isn't competitive with conventional fossil fuel power • Tidal turbines (compared to wind turbines) are much heavier and more expensive to build

  6. Availability… • Need large increasing tidal waves • At least 16ft between low and high tide • Only 40 power plants on the Earth • No power plants in the U.S. • Around 100 places where tidal energy could be used

  7. Map… Places on earth where tidal energy could be harnessed

  8. Bibliography… • Abhijit Naik. “Tidal Energy Pros and Cons.” Buzzle.com.. n.p.. 26 April 2010. Web. 23 March 2011. • “Tidal Power-Pros and Cons.” Renewable Energy Blog. n.p..27 October 2010. Web. 23 March 2011. • Energy efficiency and Renewable Energy. “Ocean Tidal Power.” Energy Savers. U.S. Department of Energy. 9 February 2011. Web. 19 March 2011. • “Pros and Cons of Tidal Energy Use.” Energy Consumers Edge. n.p.. n.d.. Web. 23 March 2011. • U.S. Energy Information administration. “Hydropower.” Energy Kids. U.S. Energy Information Administration. n.d.. Web. 21 March 2011. • California Energy Commission. “Tidal Energy.” Energy Quest. California Energy Commission. n.d.. Web. 23 March 2011.

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