OCEANS > GO TO
SEE http://h2omf.blogspot.com/,
http://alaskaenergypolity.blogspot.com/
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http://www.powermag.com/renewables/synfuel/204.html
August 15, 2007
Global Monitor (August 2007)
PG&E mounts tidal power projectPacific Gas and Electric Co. (PG&E), the city and county of San Francisco, and Golden Gate Energy Co. have agreed to undertake a comprehensive study of harnessing San Francisco Bay tides to generate power.
Specifically, PG&E is committing up to $1.5 million to fund research by "third-party experts." San Francisco is putting up as much as $346,000 for "feasibility studies and stakeholder outreach." Golden Gate Energy, a Florida company that holds a Federal Energy Regulatory Commission license to
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http://www.greentechmedia.com/articles/read/ocean-power-meets-bike-chain-company-gets-14m-5970/
Michael Kanellos March 30, 2009
Ocean-Power-Meets-Bike-Chain Company Gets $14M
Marine Power isn't dead.
It's just in the experimental phase. Singapore's Atlantis Resources just got $14 million to continue to build up tidal power.
Atlantis Resources
European Marine Energy Centre (EMEC
The Missing Ingredient in Wave and Tidal Power: Standards
Pelamis Wave Power
ran out of money.
Finavera Renewables
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Permits granted to test tides for energy potentialDate:
27th April 2007
By RINDI WHITE
Anchorage Daily News
PALMER --
Next year, Ocean Renewable Power Co. wants to hang a 20-foot miniature tidal generator off a floating platform in the Knik Arm narrows to see if it will generate power.If the Knik Arm test project works, Sauer said Ocean would be back in 2009 with a full-scale prototype, prepared for a yearlong test.
If that works, a four-generator module, roughly 60 feet tall, 60 feet wide and 10 feet deep, could be moored like a playing card, 40 feet under the surface of Cook Inlet between Fire Island and Port MacKenzie, beginning in 2012.
Sauer estimated each module could generate enough power to serve 172 homes. It's not enough to replace other power sources, he said, but it's not meant to be."We're part of a solution, we're not the solution," said Doug Johnson, director of projects for the Ocean Renewable Alaska office.
The company plans to test a similar project in Maine .The work they do here would be based out of Port MacKenzie in the Matanuska-Susitna Borough, Sauer said.
Port director Marc Van Dongen said he welcomes another company and more traffic at the port."I wouldn't see it as a big money-maker, as far as wharfage and dockage is concerned, but it would be a new industry," Van Dongen said.Van Dongen added that, from his view, the Cairn Point-Port MacKenzie area makes good sense for harvesting tidal energy.
The Knik Arm offers some of the greatest high-tide and low-tide fluctuations in the world.
Peak high is 35 feet above mean; peak low is six feet below mean, a difference of 41 feet. Those highs and lows only happen once or twice a year, he said, but the average fluctuation is about 28.8 feet, he said. "We're in the narrowest part, where the tide is the fastest," Van Dongen said.
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http://sciencemags.blogspot.com/2009/07/tech-to-watch-hydrokinetic-power.html
Conventional hydroelectric power (think of the Hoover Dam) provides 7 percent of the electricity in the U.S. But the only way to increase that number without damming more rivers—which causes widespread ecological damage both above and below the dam—is to use nonconventional hydropower sources that capture energyfrom the movement of waves, rivers and tides.
The future of hydropower is taking shape just downstream from a standard hydroelectric dam in Hastings, Minnesota. The power isn’t hydroelectric, though; it’s hydrokinetic, generated from the motion of free-flowing water. Installed this winter in –30° weather and switched on in January, the Houston-based Hydro Green Energy’s pilot plant is the first federally licensed hydrokinetic project in the U.S. Like an underwater
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.gif)
http://www.enwave.com/dlwc.php ^Remove frame
www.reuk.co.uk/Severn-Barrage-Tidal-Power.htm
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MANDATORY OCEAN SITE TO SEE
LOTS OF OCEAN WAVE VIEWS -- CLICK BELOW
http://peswiki.com/index.php/Directory:Ocean_Wave_Energy#Platforms
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An artistic impression of a tidal barrage, including embankments, a ship lock and caissons housing a sluice and two turbines. >OCEANS / RIVERS =
Tidal and current capture designs An artistic impression of a tidal barrage,
including embankments, a ship lock and caissons housing a sluice and two turbines.
These are sites that are signed for to get alerted to news stories in reference to Oil and Electric stories...
Note: These sites can be use to gather other news stories that you may want
http://news.google.com/news/story?ncl=http://www.eagletribune.com/puopinion/local_story_143222924.html%3Fkeyword%3Dtopstory&hl=en
A recent design by Alexander M. Gorlov developed at the Northeastern University, Boston, U.S.A has gained significant attention for both river and tidal applications. The so-called Gorlov Helical Turbine, GHT employs twisted blades with helical curvature. Better modularity, scalability and economics have been claimed in favor of this design.
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http://images.google.com/imgres?imgurl=http://www.hydrovolts.com/Pics/Overvi6.gif&imgrefurl=
http://www.hydrovolts.com/Main%2520Pages/Hydrokinetic%2520Turbines.htm&usg=__U57YG6I7Gh9U718cauVQTaBamxE=&h=285&w=320&sz=28&hl=en&start=18&tbnid=OWs56w31_KPw1M:&tbnh=105&tbnw=118&prev=/images%3Fq%3Driver%2Benergy%26gbv%3D2%26hl%3Den%26sa%3DG
How can it be a wind farm if it is underwater? Well, you are right. But although wind farms have become iconic images, the average person still has trouble envisioning the many techniques being tested for harvesting the power of tides. Scottish Power has announced intentions to develop the the world’s largest tidal stream project using the world’s most advanced tidal turbine - known as the Lànstrøm device.What again? No image pops to mind? So the analogy stands: a wind farm under the sea! Each turbine is 30 meters (100 feet) tall, with blades of 20 meters. They can operate in depths up to 100 meters. Most importantly, tidal power provides a predictable and constant energy source; it does not suffer from blackouts like solar power, or still days, like wind power.If permission is granted in summer 2009 as planned, the Scottish Power installations would be the first commercial underwater tidal turbine farms in the world. With timely permits, three sites with up to 20 turbines each could be operational by 2011. Each turbine produces 1 MW for a total of 60 MW installed capacity -- or enough to power 40,000 homes.The Lànstrøm turbines have undergone four years of testing in Norway, where they were developed by the company Hammerfest Strøm. The installations in Scotland represent further testing scale operations.Two sites are planned in Scotland, in the Pentland Firth and the Sound of Islay, and a third off of Ireland's North Antrim coast.
http://www.monstersandcritics.com/blogs/theworldinpictures/2008/05/artists-impression-of-south-ko.phpAn artist's impression of a 1,000-kilowatt tidal power plant that the Ministry of Land, Transport and Maritime Affairs announced on 27 May 2008 will be set up in the Myeongnyang Channel in South Jeolla Province by the end of the year. The tidal plant, to be the world's biggest, will be 16 meters long, 36 meters wide and 48 meters high. EPA/YNA
TIDAL ENERGY - CLICK BELOWhttp://search.live.com/images/results.aspx?go=SearchImages&q=tidal%20energy&form=CPDTLB#
http://www.copper.org/environment/green/casestudies/water_to_wire.htmlWave and Tidal Energy Experiments in San Francisco and Santa CruzArticles Events Photos Neighborhoods People Places Message Boards Shop ResourcesA Brief History of Wave and Tidal Energy Experiments in San Francisco and Santa CruzPage One -- Page Two -- Page Three -- Notesby Christine MillerCopyright © August 2004In 2003 the San Francisco Board of Supervisors passed a resolution allowing for a tidal energy pilot project in the bay. The project, sponsored by Board President Matt Gonzalez gained little attention until a few months later when he jumped into the mayoral race at the last minute. Tidal energy was included in his platform and appeared on his campaign literature. As a result, the project was discussed in mayoral debates and articles written about Gonzalez included tidal energy. The project gained praise from some and ridicule from others.And while this was happening, San Franciscans were for the first time in over a hundred years entertaining electricity from the ocean as a legitimate solution to some of their power problems.In California the idea of power from the ocean has been pursued since the 1870's. Experiments have taken place as far south as Imperial Beach near the Mexico border and as far north as Trinidad, in Humboldt County. The two biggest successes were built in the 1890's in San Francisco and Santa Cruz.Although there have been many failures, the perseverance of these early Californians sheds light on their ingenuity to make use of their landscape and resources. Their efforts were chronicled by their local newspapers and many of these anonymous newspaper reporters did an excellent job of reporting on the drama and aspirations that surrounded many of these machines.Seen over time, what begins as a dream and run of unsuccessful pursuits appears to look more like the steady progression of an evolving knowledge and improved technology.Groundbreakers: 1868-1880'sThe San Francisco Self-Propelling Boat: 1868
commons.wikimedia.org/wiki/File:Rance_tidal_p...
Tidal power (tidal energy) factsTidal energy is the utilization of the sun and moon's gravitational forces - as the tide is the result of their influences.Tidal energy is a type of energy that produces electricity and other forms of power through the use of water.Tidal energy is energy that could be obtained from the changing sea levels. In other words, tidal energy is a direct result of tide shifting from low to high.Tidal energy is one of the oldest forms of energy. 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 tide through a sluice and emptied during the outgoing tide through a water wheel.The tide moves a huge amount of water twice each day and although the tidal energy supply is reliable and plentiful, converting it into useful electrical power is not easy.There are two basic theories on how to convert tides into power. The first involves converting the power of the horizontal movement of the water into electricity. The second involves producing energy from the rise and drop of water levels
TIDAL LOCATIONS AND POTENTIAL
npre201.ne.uiuc.edu/Group%2014/future.htmlLocations of potential tidal power sitesTidal enery is a reliable source of energy. As long as there is a sun and moon, there will be tides on the earth.There are projects in the works for new tidal power plants in locations all over the world. For example, in the UK, a power plant in the Pentland Firth, Scotland, could potentially power nearly 60% of all of the UK's tidal energy: http://news.bbc.co.uk/2/hi/uk_news/scotland/highlands_and_islands/7021972.stm.The UK is a leader in Tidal energy. The Engineering Business, a UK company, developed the Stringray tidal device, a 150 kW device. It is made up of a hydroplane that will cause the oscillation of a support arm which will it turn drive a generator. It has been successfully tested and is currently being put to use, budgeting 22 million pounds for a 10-unit development. It is estimated that for a 100 MW instillation will be 6.7 pence/kWh, thus it is a commercially viable option. For more information, the report by Engineering Business is here.There are also proposed or considered tidal power locations in China, India, South Korea, Mexico, Australia, Russia, as well as many others.The total energy capable of being produced by the world through tidal power is approximated as 500-1000 TWh/year. A Tidal barrage could potentially save 1,000,000 tons of carbon dioxide per TWh generated. .
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I --AEA is a participant in
a multi-state evaluation of tidal and river energy technologies led by the Electric Power Research Institute (EPRI.) Alaska has one of the nation's top tidal energy resources and over half the nation's potential wave energy.
REPORTS & INFORMATION PHOTOS
EPRI River In-stream Energy Conversion Report 3-082006 Technology Evaluation by Verdant Power: Water Current Turbines for River Applications EPRI Primer on Wave and Tidal EnergyInformation from the 2007 Tidal Energy ConferenceEPRI Ocean Energy WebpageAlaska River In-Stream Site Survey Report 2-29-08 Alaska River In-Stream Feasibility Study Report 10-31-08
Ruby, AlaskaRuby, AlaskaRuby, AlaskaRuby, AlaskaPhotos above are of the preparation for the deployment of the first utility-interconnected hydrokinetic device in the State of Alaska
LINKS
Alternative Energy News - Tidal PowerEPRI Wave Energy ReportsFERC Hydrokinetic Preliminary Permit website FERC Licensing Process for In-stream Hydrokinetic ProjectsKnik Arm Tidal Energy Report
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II---AEA --OCEAN - TIDAL ,,COOK INLET STUDIES
Licensee Waterway Proposed IssuanceCapacity (KW) DateORPC ALASKA, LLC. COOK INLET 320,000 4/17/2007ALASKA TIDAL ENERGYCOMPANYICY PASSAGE AND ICYSTRAIT200 3/23/2007ALASKA TIDAL ENERGYCOMPANYGASTINEAU CHANNEL 200 3/23/2007ALASKA TIDAL ENERGYCOMPANYWRANGELL NARROWS 200 3/23/2007ALASKA TIDAL ENERGYCOMPANYKACHEMAK BAY 300,000 5/18/2007ALASKA TIDAL ENERGYCOMPANYCOOK INLET 100,000 6/7/2007CHEVERON TECHNOLOGYVENTURES, LLC.COOK INLET 80,000 6/11/2007
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III---AEA
Publications§
Links
2007 First Tidal Energy ConferenceJanuary 23-24, 2007Conference Sponsors:Alaska Energy Authority Ketchikan Public UtilitiesDenali CommissionAlaska Electric Light and Power CompanyAlaska Power and TelephoneThe Alaska Energy Authority spearheaded the first Tidal Energy Conference held in Alaska. AEA's alternative energy efforts included looking at tidal and ocean energy to displace diesel in areas of Alaska that make economic sense. A variety of experts gave presentations over the two-day conference.Conference presentations included: tidal energy overview, report on Verdant Power's East River environmental study, tidal energy resource of selected SE Alaska sites, environmental and regulatory permitting, tidal energy devices nearing commercialization, and opportunities and obstacles to project developmentSpeakers: EPRI Ocean Energy Project Manager Roger Bedard, who co-authorized EPRI's international studies and reports on wave and tidal energy, and Trey Taylor, Co-founder and President of Verdant Power.EPRI ReportPresentations
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OCEAN - TIDES, China, London
November 2, 2004China Endorses 300 MW Ocean Energy ProjectLondon, United Kingdom [RenewableEnergyAccess.com]Thanks to China's insatiable appetite for energy and their increasing determination to add renewable energy to the mix, the ocean waters off the coast of China are on their way to gaining a large-scale ocean energy project.
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OCEAN - TIDES Mr. Lee, President Kennedy
The Blue Energy ocean turbine acts as a highly efficient underwater vertical-axis windmill and has several remarkable advantages conferred upon it arising from the following basic science: Sea water is 832 times more dense than air, and it is a non-compressible medium, therefore an 8-knot tidal current provides the equivalent force of a 390 km/hr wind (approximately). Developed by veteran aerospace engineer Barry Davis, the Blue Energy vertical-axis turbine represents two decades of Canadian research and development. Four fixed hydrofoil blades of the turbine are connected to a rotor that drives an integrated gearbox and electrical generator assembly. The turbine is mounted in a durable concrete marine caisson which anchors the unit to the ocean floor, directs flow through the turbine further concentrating the resource supporting the coupler, gearbox, and generator above it. These sit above the surface of the water and are readily accessible for maintenance and repair. The hydrofoil blades employ a hydrodynamic lift principal that causes the turbine foils to move proportionately faster than the speed of the surrounding water. Computer optimized cross-flow design ensures that the rotation of the turbine is unidirectional on both the ebb and the flow of the tide.
Tidal power is drawing special interest because, unlike wind power, it is more predictable and consistent. It comes in two varieties: tidal stream, where devices that function like underwater wind turbines are deployed under the sea; and tidal barrage, where turbines are installed across a river or estuary and function like a hydroelectric dam.Wave power, meanwhile, is generated by converting the ocean's up-and-down movement into electricity. Some firms use a network of buoys to accomplish this; others prefer devices that float on the water's surface.To encourage the development of marine power, the Scottish government set up the £10 million (about $14.7 million) Saltire prize for advances in wave- and tidal-energy technologies. It also has increased to five and three, respectively, the number of Renewable Obligation Certificates awarded to marine developers for every megawatt hour of electricity produced from wave and tidal power. The certificates, designed to reward companies that produce power from green energy sources, currently are valued at around £52.65 per megawatt hour.
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