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- Tidal power is reliable and cost-effective
- Tidal Energy dependable and non-polluting
- Tidal Energy clean, plentiful, and predictable
- Tidal Energy is clean and has huge potential
- Tidal energy offers huge potential for generation of electricity
- Tidal energy green, reliable, effective, and cost-competitive
- Tidal energy tech is adaptive and progressing now
- Tidal power can displace fossil fuels
- Tidal power can become a productive part of an energy mix that displaces fossil fuels and reduces emissions
- Tidal wave energy is sustainable enough to meet the US’ energy needs
- Tidal energy is a viable and better than other renewables and nuclear power – 5 reasons
- Tidal wave energy is reliable and has huge potential
- Tidal and wave energy in the Northwest alone could generate tons of electricity
Tidal Energy GoodGood - GeneralTidal energy will produce reliable, renewable electricity without emissionsMaine Dept. of Environmental Protection June 2010 “Information Sheet: Regulation of Tidal and Wave Energy Projects”; Maine Dept. of Environmental Protection; http://www.maine.gov/dep/water/dams-hydro/is_tidal_wave_reg.html; Accessed June 26, 14 Tidal energy projects use tidal action (tidal amplitude or currents) to generate power while wave energy projects use wave action (wind-driven water level oscillations) to generate power. Historically, there were a number of small dams along the coast of Maine that used tidal action to operate a gristmill or sawmill using mechanical power until electricity became available locally. Construction was actually started on a large-scale tidal power project proposed for Passamaquoddy Bay in the 1930's, but the project was later abandoned for economic reasons. Despite the fact that designs for tidal energy systems have been patented since the 1800s, there are no commercial-scale tidal or wave energy projects in operation in the United States today and only a handful in operation world-wide.¶ There is currently a renewed interest in using the ocean to generate electricity, using both traditional hydropower technologies and new hydrokinetic technologies. This interest is being spurred by recent federal legislation promoting development of cleaner domestic energy sources and diversification of energy supplies through use of alternative and renewable sources and by recent studies of wave and tidal power technologies and potential sites, including sites for tidal and wave energy projects in Maine. Interest is also being spurred by the development of new composite construction materials and computer-added design improvements that may overcome some of the technical problems inherent in earlier designs.¶ Tidal energy projects hold the promise of producing indigenous, renewable, predictable electricity without greenhouse gas emissions and with higher power densities (power output per unit area) than either solar photo-voltaic or wind projects. Tidal energy projects also may be useful in filling in the gaps in generation from other intermittent energy sources, such as wind projects. Tidal power is reliable and cost-effectiveRahman et al 13 (Md. Mahbubur, Bangladesh Minister of Water Resources, Nirupom Paul, Shahrior Ahmed & Md. Safi Rashed at Khulna University of Engineering & Technology), "Power Generation from Sea Wave: An Approach to Create Renewable Energy", Global Journal of Researchers in Engineering: General Engineering, Volume 13 Issue 1, Accessed 6-25-14, < http://www.engineeringresearch.org/index.php/GJRE/article/view/801/733>. Tidal energy is an intermittent source of energy because it only provides power for around ten hours each day, when the tide is actually moving in or out, in spite of it, tides are totally predictable and it produces electricity reliably. But there are not many places in the world where this technology is efficient. Offshore turbines and vertical-axis turbines are not too expensive to build and neither to maintain because it needs no fuel. Once it is built, tidal power is free. Besides, tidal installations don’t produce a large environmental impact and it produces neither greenhouse gases nor other waste. Tidal power turbines provide a higher average power than either wind or wave devices for a given maximum capacity. Tidal power turbines also have higher duty cycle (50%) than wave turbines (25%). Tidal Energy dependable and non-pollutingOcean Energy Council ‘14 “Tidal Energy”; Ocean Energy Council; http://www.oceanenergycouncil.com/ocean-energy/tidal-energy/; Accessed June 26, 2014 Tidal energy is one of the oldest forms of energy used by humans. Indeed, tide mills, in use on the Spanish, French and British coasts, date back to 787 A.D.. Tide mills consisted of a storage pond, filled by the incoming (flood) tide through a sluice and emptied during the outgoing (ebb) tide through a water wheel. The tides turned waterwheels, producing mechanical power to mill grain. We even have one remaining in New York- which worked well into the 20th century.¶ Tidal power is non-polluting, reliable and predictable. Tidal barrages, undersea tidal turbines – like wind turbines but driven by the sea – and a variety of machines harnessing undersea currents are under development. Unlike wind and waves, tidal currents are entirely predictable.¶ Tidal energy can be exploited in two ways:¶ By building semi-permeable barrages across estuaries with a high tidal range.¶ By harnessing offshore tidal streams. Barrages allow tidal waters to fill an estuary via sluices and to empty through turbines. Tidal streams can be harnessed using offshore underwater devices similar to wind turbines. Tidal Energy clean, plentiful, and predictableAlstom June 26, 14 Alstom [French multinational company which holds interests in the electricity generation and rail transport markets]; http://www.alstom.com/power/renewables/ocean-energy/tidal-energy/; Accessed June 26, 14 The benefits of tidal energy¶ Tidal power offers an inexhaustible supply of energy, free of greenhouse gas emissions once installed. It also has the advantage of being totally predictable, as tidal currents result from perfectly known astronomical phenomena.¶ If all suitable tidal sites in the world were exploited for tidal power, it’s estimated that 100 TWh of electricity could be produced each year.
“Tidal Wave Energy Generators”; Economic Fuel; http://www.bionomicfuel.com/tidal-wave-energy-generators/; Accesed June 26, 14 Generation of tidal wave energy is an entirely clean process. It does not involve the use of any greenhouse gases that lead to global warming. Some generators of tidal wave power work in a similar way to wind energy generators, and they are called tidal turbines. The generators of tidal wave power are placed off shore into a tidal stream, using a tidal turbine for tidal power generation. The water flow makes the turbine move, which generates energy. Tidal power generation has huge potential and it really is the future of alternative energy, which is just waiting to be tapped into. Tidal energy offers huge potential for generation of electricityGlobal Site Plans May 14, 2013 “Tidal Wave Energy: Is it Ecologically Sustainable?”; Global Site Plans; http://www.globalsiteplans.com/environmental-design/tidal-wave-energy-is-it-ecologically-sustainable/; Accessed June 26, 14 ¶ Global energy demand continues to grow and tidal wave energy generation devices can provide a significant source of renewable energy. Technological developments in offshore engineering, and the rising cost of traditional energy, means that offshore energy resources will be economic in the next few years.¶ ¶ Tidal wave energy is a form of hydropower that converts the energy of tides into useful forms of power – mainly electricity. Although not yet widely used, tidal power has potential for future electricity generation. Tides are more predictable than wind energy and solar power, as there can be bigger variances in the amount and levels of sunlight and wind.
“Tidal Energy”; Energy Informative; http://energyinformative.org/tidal-energy-pros-and-cons/; Accessed June 26, 14 Tidal Energy is a renewable energy source. This energy source is a result of the gravitational fields from both the sun and the moon, combined with the earth’s rotation around its axis, resulting in high and low tides.¶ It is this difference in potential energy that is the source of power generation from tidal energy, whether we are talking about stream generators, tidal barrages or more the more recent technology, dynamic tidal power (DTP).¶ So, why is tidal energy renewable? Compared to fossil fuels or nuclear reserves, the gravitational fields from the sun and the moon, as well as the earth’s rotation around its axis won’t cease to exist any time soon.¶ ¶ 2. Green¶ Tidal power is an environmentally friendly energy source. In addition to being a renewable energy, it does not emit any climate gases and does not take up a lot of space. However, there are currently very few examples from real tidal power plants and their effects on the enviroment. An important task is therefore to study and assess these things.¶ ¶ 3. Predictable¶ Tidal currents are highly predictable. High and low tide develop with well-known cycles, making it easier to construct the system with right dimensions, since we already know what kind of powers the equipment will be exposed to.¶ Because of this, even though the turbines that are being used (tidal stream generators that is) are very similar to wind turbines, both the physical size and the installed capacity has entirely other limitations.¶ ¶ 4. Effective at Low Speeds¶ Water has 1000 times higher density than air, which makes it possible to generate electricity at low speeds. Calculations show that power can be generated even at 1m/s (equivalent to a little over 3ft/s).¶ ¶ 5. Long Lifespans¶ We have no reason to believe that tidal power plants are not long lived. This ultimately reduces the cost these power plants can sell their electricity, making tidal energy more cost-competitive. The tidal barrage power plant La Rance was opened already in 1966 and still generates large amounts of electricity. Tidal energy tech is adaptive and progressing nowJOSHUA HUNT and DIANE CARDWELL APRIL 27, ‘14 “Experimental Efforts to Harvest the Ocean’s Power Face Cost Setbacks”; New York Times; JOSHUA HUNT and DIANE CARDWELL; http://www.nytimes.com/2014/04/28/business/energy-environment/experimental-efforts-to-harvest-the-oceans-power-face-cost-setbacks.html?_r=0; Accessed June 26, 14 Although some renewable energy technologies — conventional hydropower, solar and wind — have reached commercial viability and can compete in some markets with fossil fuels, the emerging water-based approaches called marine hydrokinetic technologies are far from meeting that mark.¶ Tidal power, which captures energy from currents moving in one direction at a time, as opposed to the wave-based technology of the Ocean Power buoys, is farther along, said Paul Jacobson, ocean energy leader at the Electric Power Research Institute. One reason, he said, is that tidal power is easier to engineer and has been able to adapt expertise from the conventional hydroelectric industry.
Tidal energy offers huge potential for generation of electricityAP May 14, 2013 “Tidal Wave Energy: Is it Ecologically Sustainable?”; Global Site Plans; http://www.globalsiteplans.com/environmental-design/tidal-wave-energy-is-it-ecologically-sustainable/; Accessed June 26, 14 ¶ Global energy demand continues to grow and tidal wave energy generation devices can provide a significant source of renewable energy. Technological developments in offshore engineering, and the rising cost of traditional energy, means that offshore energy resources will be economic in the next few years.¶ ¶ Tidal wave energy is a form of hydropower that converts the energy of tides into useful forms of power – mainly electricity. Although not yet widely used, tidal power has potential for future electricity generation. Tides are more predictable than wind energy and solar power, as there can be bigger variances in the amount and levels of sunlight and wind.
Tidal energy displaces fossil fuels pollution and avoids radiation risks of nuclear powerThe Ocean Energy Council, 2014, “Tidal Energy,” http://www.oceanenergycouncil.com/ocean-energy/tidal-energy/, Accessed 5/3/2014 Tidal energy is a renewable source of electricity which does not result in the emission of gases responsible for global warming or acid rain associated with fossil fuel generated electricity. Use of tidal energy could also decrease the need for nuclear power, with its associated radiation risks. Changing tidal flows by damming a bay or estuary could, however, result in negative impacts on aquatic and shoreline ecosystems, as well as navigation and recreation. The few studies that have been undertaken to date to identify the environmental impacts of a tidal power scheme have determined that each specific site is different and the impacts depend greatly upon local geography. Local tides changed only slightly due to the La Rance barrage, and the environmental impact has been negligible, but this may not be the case for all other sites. It has been estimated that in the Bay of Fundy, tidal power plants could decrease local tides by 15 cm. This does not seem like much when one considers that natural variations such as winds can change the level of the tides by several metres. Tidal power can become a productive part of an energy mix that displaces fossil fuels and reduces emissionsThe Ocean Energy Council, 2014, “Tidal Energy,” http://www.oceanenergycouncil.com/ocean-energy/tidal-energy/, Accessed 5/3/2014 The demand for electricity on an electrical grid varies with the time of day. The supply of electricity from a tidal power plant will never match the demand on a system. But, due to the lunar cycle and gravity, tidal currents, although variable, are reliable and predictable and their power can make a valuable contribution to an electrical system which has a variety of sources. Tidal electricity can be used to displace electricity which would otherwise be generated by fossil fuel (coal, oil, natural gas) fired power plants, thus reducing emissions of greenhouse and acid gasses. Solves Energy NeedsTidal wave energy is sustainable enough to meet the US’ energy needsAyre ‘14 James Ayre attended the University of Astnide and has a background in geopolitics and history. “Tidal Power – GE & Others Looking to Harness the Power of the Moon.” Clean Technica. May 25, 2014. http://cleantechnica.com/2014/05/25/tidal-power-ge-others-looking-harness-power-moon/ As far as related projects elsewhere in the world go — in the US, just last August the Energy Department announced over $16 million in funding for new ocean energy projects, something that is apparently already beginning to bear fruit. As it stand currently, the US is underwriting the development of 17 different tidal and wave energy demonstration projects, with current estimates (from the DOE) being that there are up to 1,400 terawatt hours of potential tidal energy generation per year — enough to provide a very substantial portion of the country’s energy needs. “Wave and tidal energy represent a large, untapped resource for the United States and responsible development of this clean, renewable energy source is an important part of our all-of-the-above energy strategy,” Assistant Secretary for Energy Efficiency and Renewable Energy David Danielson commented in a statements elevated last year. EU’s effort to develop a purpose-designed generator for wave energy extraction — the MAGNETIDE Project — continues to move forward as well. The researchers working on the project recently revealed that they had reduced the total cost of the system while increasing the efficiency by up to 30%. Pretty big gains — which were made possible via the utilization of new Powder Injection Moulding technology. Tidal energy is a viable and better than other renewables and nuclear power – 5 reasonsShah 11 Abhishek Shah attended the Indian Institute of Management Calcutta. Green World Investor. “Advantages and Disadvantages of Tidal Energy.” March 15, 2011. http://www.greenworldinvestor.com/2011/03/15/advantages-and-disadvantages-of-tidal-energy/ Renewable, non-Polluting and Carbon Negative - Tidal Energy is completely renewable, does not lead to any pollution of the air and does not lead to any carbon emissions like Fossil Fuels. Predictable - Tidal Wave Energy is very predictable as the Tides rise with great uniformity. Other forms of Renewable Energy like Solar and Wind Energy are intermittent in nature. The electricity supply is much more uniform and reliable in case of Tidal Power. No Fuel - Tidal Power needs Water for Generation of Electricity in its catchment area. It does not need fuel like Thermal, Gas or Oil Powered Power Stations. Low Costs – Once a Tidal Energy Power Plant starts running, its costs are extremely low. The biggest Power Plant in France run by EDF works at 1.5c/Kwh which is lower than either nuclear or coal energy which are the cheapest forms of power. Long Life - A Tidal Barrage has a very long life of around 100 years which is much longer than that of even Nuclear Power Plants. The long life implies that the life cycle cost of a Tidal Energy Power Plant becomes very low in the long term. High Energy Density - The Energy Density of Tidal Energy is much higher than that of other forms of Renewable Energy like Wind Power. High Load Factor - The Load Factor for Solar and Wind Energy ranges from 15-40% which is quite low compared to Fossil Fuel Energy. Tidal Energy has a load factor of almost 80% which is equal to that of Thermal Power. Tidal wave energy is reliable and has huge potentialSilverstein 2013 Ken Silverstein is a contributor at Forbes. “Tidal Energy Could Be Next Big Wave.” Forbes. June 6, 2013. http://www.forbes.com/sites/kensilverstein/2013/06/06/tidal-energy-could-be-next-big-wave/ Such sustainable energy, along with tidal energy, are the next big wave. A joint analysis done by the Energy Department and Georgia Tech say that the West Coast, which includes Alaska and Hawaii, are excellent prospects. It says that Maine has the best odds of success on the East Coast. What does tidal energy have that wind and solar do not? A continuous flow of water that won’t disrupt reliability. The Electric Power Research Institute performed feasibility studies in this area. The Palo Alto, Calif.-based research arm of the electric utility sector said that unlike hydropower, tidal energy does not require the permanent impediment of water flow and the subsequent harm to aquatic life. Existing tidal plants, it adds, impound the water before releasing it into generators. And newer tools are even more progressive and use underwater turbines that ultimately connect to cables to transport the power. Tidal and wave energy in the Northwest alone could generate tons of electricityRenewable Northwest April 4, ‘7 “Wave & Tidal Energy Technology”; Renewable Northwest; http://www.rnp.org/node/wave-tidal-energy-technology; Accessed June 26, 14 Worldwide potential for wave and tidal power is enormous, however, local geography greatly influences the electricity generation potential of each technology. Wave energy resources are best between 30º and 60º latitude in both hemispheres, and the potential tends to be the greatest on western coasts. The United States receives 2,100 terawatt-hours of incident wave energy along its coastlines each year, and tapping just one quarter of this potential could produce as much energy as the entire U.S. hydropower system. Oregon and Washington have the strongest wave energy resource in the lower 48 states and could eventually generate several thousand megawatts of electricity using wave resources.2 Several sites in Washington’s Puget Sound with excellent tidal resources could be developed, potentially yielding several hundred megawatts of tidal power.3 While no commercial wave or tidal projects have yet been developed in the United States, several projects are planned for the near future, including projects in the Northwest. AquaEnergy Group, Ltd is currently designing and permitting a one-megawatt demonstration wave power plant at Makah Bay, Washington. Ocean Power Technologies has received a preliminary permit to explore construction of North America’s first utility-scale wave energy facility off the coast of Reedsport, Oregon. With the support of the Oregon Department of Energy, Oregon State University is also seeking funding to build a national wave en-ergy research facility near Newport, Oregon. Several tidal power projects are also being explored in the region. Tacoma Power has secured a preliminary permit to explore a tidal power project at the Tacoma Narrows, one of the best locations for tidal power in the country, and Snohomish County Public Utility District has received preliminary permits for seven other potential tidal power sites in the Puget Sound. Directory: file -> view view -> Western Europe after wwii view -> Author study: paul fleischman view -> Qpa1 7ela study Guide view -> Arctic Oil/Gas Neg view -> November 1970 Approximately 150,000-500,000 deaths Bhola Cyclone Bangladesh view -> Grade Level: 6 Unit of Study: Caribbean glce view -> Citation: Duffield, Katy view -> Table of Contents Lesson # view -> Chinese Wind Energy Disad Download 0.89 Mb. Share with your friends:
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