1. Ocean Energy EGEE 101H Jeffrey Singer & Matthew Quillen

2. Introduction ❖ What is Ocean Energy? ❖ The Moon and Tides ❖ History of Ocean Energy

3. What is Ocean Energy? ❖ Term used to describe all forms of energy derived from the sea ❖ Includes wave energy, tidal energy, ocean thermal energy, etc.

4. Energy Potential ❖ Oceans cover more than 70% of Earth's surface ❖ Ocean is world’s largest solar collector ❖ Potential to power the entire world

5. Energy Potential Cont. ❖ 80% of the sun’s energy is stored within the world’s ocean surface waters every day ❖ 4,000 times the amount of energy the world uses on a daily basis

6. The Moon and Tides ❖ Earth and Moon are like magnets ❖ Earth cannot “hold down” water thus moon is able to pool at it ❖ 2 High tides 2 Low tides

7. History ❖ 11th century dams first built ❖ Initial patent for Wave Power device issued over 100 years ago ❖ Formally discovered in 1966, La Rance, France

8. Initial Ocean Energy Projects ❖ World’s first multi-unit commercial wave farm is known as Pelamis ❖ Wave movement sets off hydraulic pump process, driving generators to produce electricity

9. Initial Ocean Energy Projects Cont. ❖ Ocean Thermal Energy Conversion (OTEC) utilizes natural temperature differences between warm surface waters and deep cold water ❖ Using its own supply of sustainable 24/7 energy, OTEC can produce tremendous volumes of fresh drinking water

10. ❖ Irregular and Low-Frequency energy source ❖ Many different system types ❖ Deep Ocean vs. Coastal sites ❖ Permitting issues Wave Energy

11. Wave Energy Conversion ❖ Channel Systems- Funnel waves into reservoirs ❖ Float Systems- Drive hydraulic pumps ❖ Oscillating Water Column System- Use waves to compress air within a container

12. ❖ Reservoirs and Dams ❖ Moon ❖ La Rance Tidal Power Plant Tidal Energy

13. Tidal Energy Conversion ❖ Barrage or Dam ❖ Forces water through turbines ❖ Activates generator to create electricity

14. ❖ Temperature Difference Ocean Thermal Energy Conversion (OTEC)

15. Advantages ❖ Green- Does not emit any harmful greenhouse gases ❖ Renewable ❖ Reliable- Seasonal changes yet always in motion

16. Advantages Cont. ❖ Energy Potential- 30-40 KW for every meter of wave along shore ❖ Area Efficient- Wave farm that is occupying less than a half square mile can generate enough power to supply 20,000 homes ❖ Offshore Wave Plants- Larger energy potential

17. Disadvantages ❖ Environmental Effects- Causes conflict with tourism and local acceptance, and unsure of effect on marine life ❖ Costs- New stage of technology, wave resources, connection to power grid, lifespan of technology

18. Concerns of Technology ❖ High construction cost with long payback period ❖ Protecting shore fronts ❖ Preventing alterations in ocean temperatures ❖ Keeping sea life migration patterns intact

19. Future of Ocean Energy ❖ Move towards leveling costs ❖ Electricity prices drive installation ❖ All depends on wave energy density

20. References ❖ The Moon And Tides. (n.d.). Retrieved April 14, 2015, from http://home.hiwaay.net/~krcool /Astro/moon/moontides/ ❖ Ocean Energy. (n.d.). Retrieved April 14, 2015, from http://www.energy.ca.gov/oceanenergy /#tidal ❖ Ocean Energy Web Page. (n.d.). Retrieved April 16, 2015, from http://oceanenergy.epri.com/ ❖ The History and Fun Facts of Ocean Energy. (n.d.). Retrieved April 14, 2015, from http://mgoceanenergy.weebly.com/the-history-and-fun-facts-of-ocean-energy.html ❖ (n.d.). Retrieved April 14, 2015, from http://www.greentechmedia.com/research/report /forecasting-the-future-of-ocean-power