Tidal power - Renewable energy .

Tidal power - Renewable energy .

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  TIDAL POWER CLEAN TECHNOLOGY Supervision:Dr. Thomas Schaubroeck By: Gołębiowska Katarzyna Havran Iva Herzallah A M. Mohammed 2014- 2015
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  TABLE OF CONTENT •Introduction • Sustainability assessment • Economics • Environmental impacts • SWOT analysis - a case study of Poland • Conclusions and future prospective
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  Introduction Tidal energy isa result of the motion in the Earth-Moon system. The basic principles of the tidal power utilization technology are: • Altering the tidal energy by barrage systems into the electricity (Right-up picture) • Altering the kinetic energy of the tides by tidal current systems into the electricity (Right-down picture)
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  Introduction Advantages of tidalpower utilization: • Renewable and durable source of energy • Predictable energy source compared with • Pollution free • Controls the impacts on a coastline against Damage from high storm tides
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  Introduction Disadvantages of tidalpower utilization: • It is presently costly to build and maintain • It has negative environmental affects
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  Sustainability assessment: Economics •Initial costs of implementation – very high • Durability of these plants (more than 100 years) and rather low operation costs make them competitive on the market • Example: • La Rance, power plant in France with initial costs estimated to be around $66 million, but the money was reclaimed due to long operating time (45 years now). • For guidance only, costs in France: • La Rance-240 megawatts generator generates the electricity at 3, 7 eurocents per kwh • Conventional power plant - 10, 8 Eurocents per kwh • Nuclear power plant - 3, 8 Eurocents • Hydropower plant - 3, 7 Eurocents per kwh
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  Sustainability assessment: Environmental impacts •Only few studies by now However it is known that:  The tidal current turbines less harmful than older, barrage systems  Water turbidity affected due to the change of sedimentation movements  Ocean life suffers from direct contact with turbines  Barrage lowers the tidal range, affects the intertidal zone, thus birds that feed on it  Recent study - sound linked with the turbines shifts the water pressure, hence, harms fish tissue
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  SWOT analysis -a case study of Poland
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  SWOT analysis -a case study of Poland Opportunities Threats access to the Baltic sea unstable political situation (key role of relations with Russia – main gas provider) potential interest of investors (provided that environmental policy changes and there is more financial support) no long-term vision on energy policy puts investors off implementation of the legislation, including the energy strategy until 2020, as a further plan for supporting renewable power utilization not clear environmental legislation high costs of technology (limited utilization hydro power to units below 1 MW)
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  Conclusions and futureprospective • Tidal energy is the type of green energy which is rather predictable and reliable. • Every day development of the technology makes it more applicable because it reduces its costs. • The case of France shows that tidal power can be already used efficiently, and the further development will make it even more feasible. • There is a need for more studies, however, it is known that there are severe environmental impacts that further development can reduce. • Case of Poland shows that tidal power is not the main interest among other renewable sources, however there is some potential if the new legislation and support plan are introduced.
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  Thank you !