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Posts Tagged ‘Wave Energy Trials’

DAVID R. BAKER, San Francisco Chronicle, December 12, 2009

The waves off of Vandenberg Air Force Base on the central California coast could one day generate electricity, if Pacific Gas and Electric Co. has its way.

The utility reported Friday that it has signed an agreement with the U.S. Air Force to study the area’s potential for a wave power project. If approved by the Federal Energy Regulatory Commission, the project could one day generate as much as 100 megawatts of electricity. A megawatt is a snapshot figure, roughly equal to the amount of electricity used by 750 average homes at any given instant.

Wave power technologies have the potential to provide large amounts of electricity. But they have been slow to leave the lab.

The typical wave power system consists of buoys that generate electricity as they bob up and down on the ocean’s surface. But the ocean has proven tougher than some of the systems.

PG&E two years ago agreed to buy electricity from a proposed “wave park” near Eureka to be built by Canadian company Finavera. But Finavera’s prototype buoy sank during a test, and California energy regulators killed the deal.

Under its $6 million WaveConnect program, PG&E is still studying potential wave park sites off Humboldt County. The utility, based in San Francisco, also examined the Mendocino County coast before ruling it out.

Vandenberg makes an attractive test site. It occupies a bend in the coast of Santa Barbara County where some of the beaches face west, some face southwest and others face south. PG&E in particular wants to study the area between Point Arguello and Point Conception.

“Generally, that piece of the coast is very active for waves,” said PG&E spokesman Kory Raftery. “It picks up swells from different directions.”

If the company wins federal approval, it will study the area for three years before making a decision on whether to test wave power devices there. The company wants to test several different devices but has not yet picked which ones, Raftery said.

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CAROL FLETCHER, The Record, November 29, 2009

Linda Rutta says she has a “tiger by the tail” with a renewable energy device she and her husband, Stanley, invented that can convert the power of ocean waves into electricity.

Now the research and development team needs funding to analyze five days of data from a landmark test of the 12-foot cylindrical prototype and build a life-size version.

“We have to scale up and make a commercial unit,” said Linda Rutta, but “the costs ahead are larger than a small entity can shoulder.”

Able Technologies is based in the Ruttas’ Englewood home, where the couple designed what they call an electricity-generating wave pipe with the help of colleagues in mechanical and oceanic engineering after patenting their concept in 2002.

Devices harnessing kinetic energy from ocean waves, known as wave energy converters, are not new and can be problematic. Online organizations reported in March that three devices installed off the coast of Portugal by a Scottish developer were taken ashore due to structural problems and lack of funding.

The Scottish devices are horizontal, serpentine structures that undulate in sync with the waves, whereas the Ruttas’ version anchors vertically to the ocean floor.

That means the machine has to stand up to the fierce oceanic conditions much like a bridge stanchion. These include the very force it captures in trying to produce enough electricity to be viable, said Rutta.

The Ruttas got their first opportunity to test the prototype’s endurance and energy production in mid-November, at the Ohmsett Oil Spill Response Research and Renewable Energy Facility at Leonardo in Monmouth County. The facility operates under the U.S. Department of Interior and runs a massive, 11-foot-deep wave tank for testing oil spill response equipment. This year it added wave energy technology.

The agency offered the Ruttas a week at Ohmsett after finding merit in a white paper the Ruttas submitted on the technology.

Every day for a week, the wave pipe was fitted with probes and other sensory equipment while being battered with saltwater waves up to 3 feet high. The purpose was to measure how it performed against small waves — which might have made it stall — and high ones, and whether it delivered energy, said Rutta.

“It worked with the waves beautifully — that was my happiest surprise,” said Rutta, “and it produced power. It exceeded our expectations.”

The week’s worth of results will be analyzed to determine the weight and size a commercial unit should be to withstand ocean conditions and estimate how much electricity could be produced, Rutta said.

While the tests raise their credibility, she said, funding is needed to analyze the data and design and build a full-size prototype.

Rutta said she is waiting for word on their application for a $150,000 grant from the small business arm of the Department of Energy to analyze the data. Designing and building a commercial-sized prototype could be “in the millions,” she said.

All money up to this point has come from their personal savings, said Rutta, and has reached “into the six figures.”

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EMILY AVILES, Ode Magazine, October 26, 2009

mainLately, the shores of San Francisco, California have been attracting more than wet-suit clad surfers and their boards.

A site five miles off the city’s western beach is being considered for a new Oceanside Wave Energy project.

Australian energy company BioPower Systems is collaborating with the City of San Francisco to investigate wave energy generation from the Pacific Ocean.

Wave power, not to be confused with tidal power, takes advantage of energy from the actual surface waves of the ocean. People have attempted to harness this power since 1890, but with little success. However, that may change thanks to BioPower Systems application of biomimicry.

The ideas underlying the company’s novel technologies reap the full benefit of billions of years of underwater evolution. The proposed bioWAVE ocean wave power system will sway like sea plants in ocean waves. Each lightweight unit—developed for 250kW, 500kW, 1000kW capacities—will then connect to a utility-size power grid via subsea cables. It’s now predicted that the same Californian waves that propel sundry surfers could generate between 10MW and 100MW of power. That’s enough energy to power between 3,000 to 30,000 homes annually.

If this project is indeed determined feasible—and it does look hopeful—BioPower Systems and the City of San Francisco will begin to develop a way to deliver clean renewable electricity to the city’s power grid. By 2012 that “hella rad swell” could be something electrifying.

Click here to view a full animation of the bioWAVE farm in action.

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MendoCoastCurrent, October 8, 2009

wave-ocean-blue-sea-water-white-foam-photoOcean Power Technologies Inc. has signed an exclusive agreement with three Japanese companies to develop a demonstration wave energy station in Japan. Idemitsu Kosan Co., Mitsui Engineering & Shipbuilding Co. and Japan Wind Development Co. comprise this consortium and have invited OPT to become a member of this Tokyo Wave Power Initiative.

This is OPT’s first venue in Japan and complements OPT’s global strategy to form alliances with strategic partners in key markets. OPT now has a range of power generation projects globally, including those in Oregon and Hawaii in the U.S., Scotland and Southwest England in the U.K., Spain, Australia and now Japan.

Under the anticipated agreement to build the demonstration plant, OPT said it will sell the equipment for the power station to the The companies in Initiative. And they will provide manufacturing and maintenance of the power stations and on-going plant operations, while OPT will provide its PowerBuoy technology and appropriate subsystems.

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NAO NAKANISHI, Reuters, October 5, 2009

PelamisWaveFarm_PelamisWavePowerA first attempt fell victim to the crisis: now in the docks of Scotland’s ancient capital, a second-generation scarlet Sea Snake is being prepared to harness the waves of Britain’s northern islands to generate electricity.

Dwarfed by 180 metres of tubing, scores of engineers clamber over the device, which is designed to dip and ride the swelling sea with each move being converted into power to be channelled through subsea cables.

Due to be installed next spring at the European Marine Energy Centre (EMEC) in Orkney, northern Scotland, the wave power generator was ordered by German power company E.ON, reflecting serious interest in an emerging technology which is much more expensive than offshore wind.

Interest from the utility companies is driven by regulatory requirements to cut carbon emissions from electricity generation, and it helps in a capital-intensive sector.

Venture capitalists interested in clean tech projects typically have shorter horizons for required returns than the 10-20 years such projects can take, so the utilities’ deeper pockets and solid capital base are useful.

“Our view … is this is a 2020 market place,” said Amaan Lafayette, E.ON’s marine development manager. “We would like to see a small-scale plant of our own in water in 2015-2017, built on what we are doing here. It’s a kind of generation we haven’t done before.”

The World Energy Council has estimated the market potential for wave energy at more than 2,000 terawatt hours a year — or about 10% of world electricity consumption — representing capital expenditure of more than 500 billion pounds ($790 billion).

Island nation Britain has a leading role in developing the technology for marine power, which government advisor the Carbon Trust says could in future account for 20% of the country’s electricity. The government is stepping up support as part of a 405 million pound investment in renewable energy to help its ambition of cutting carbon emissions by 80% by 2050 from 1990 levels, while securing energy supply. (The challenge is more about getting to a place where we are comparable with other renewable technologies… We want to get somewhere around offshore wind,” said Lafayette.)

Britain’s Crown Estate, which owns the seabed within 12 nautical miles of the coast, is also holding a competition for a commercial marine energy project in Pentland Firth in northern Scotland.

Besides wave power, Britain is testing systems to extract the energy from tides: private company Marine Current Turbines Ltd (MCT) last year opened the world’s first large-scale tidal turbine SeaGen in Northern Ireland.

DEVELOPING LIKE WIND

wave_power_pelamis“We are often compared to the wind industry 20 years ago,” said Andrew Scott, project development manager at Pelamis Wave Power Ltd, which is developing the Sea Snake system, known as P2. Standing beside the train-sized serpent, Pelamis’ Scott said wave power projects are taking a variety of forms, which he said was similar to the development of the wind turbine. “You had vertical axis, horizontal axis and every kind of shapes before the industry consolidated on what you know as acceptable average modern day turbines.”

The Edinburgh Snake follows a pioneering commercial wave power project the company set up in Portugal last September, out of action since the collapse of Australian-based infrastructure group Babcock & Brown which held a majority share. “It’s easy to develop your prototypes and models in the lab, but as soon as you put them in water, it swallows capital,” said John Liljelund, CEO of Finnish wave energy firm AW-Energy, which just received $4.4 million from the European Union to develop its WaveRoller concept in Portugal.

At present, industry executives say marine power costs about double that from offshore wind farms, which require investment of around 2-3 million euros per megawatt. Solar panels cost about 3-4 million per megawatt, and solar thermal mirror power about 5 million.

UTILITY ACTION

Other utility companies involved in wave power trials include Spain’s Iberdrola, which has a small experimental wave farm using floating buoys called “Power Take- offs” off the coast of northern Spain. It is examining sites for a subsea tidal turbine project made by Norwegian company Hammerfest Strom.

Countries developing the technology besides Britain include Portugal, Ireland, Spain, South Korea and the United States: about 100 companies are vying for a share of the market, but only a handful have tested their work in the ocean.

Privately owned Pelamis has focussed on wave energy since 1998, has its own full-scale factory in Leith dock and sees more orders for the second generation in prospect.

Lafayette said E.ON examined more than 100 devices since 2001 before picking Sea Snake for its first ocean project, a three-year test: “They have a demonstrable track record … and commercial focus and business focus.”

A single Sea Snake has capacity of 750 kilowatts: by around 2015, Pelamis hopes each unit will have capacity of 20 megawatts, or enough to power about 30,000 homes.

Neither Pelamis nor E.ON would elaborate on the cost of the Sea Snake, but they said the goal is to bring it down to the level of offshore wind farms.

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MendoCoastCurrent, October 2, 2009

wave-ocean-blue-sea-water-white-foam-photoAW-Energy, a Finnish renewable energy company developer of WaveRoller, a patented wave energy technology, has signed a $4.4M (3 million euros) contract with the European Union to demonstrate its technology.

The contract between AW-Energy and the EU is the first one under the “CALL FP7 – Demonstration of the innovative full size systems.” Several leading wave energy companies competed in the CALL. The contract includes a 3 million euro or $4.4M US grant agreement, providing financial backing for the demonstration project.

The project goal is to manufacture and deploy the first grid-connected WaveRoller unit in Portuguese waters. The exact installation site is located near the town of Peniche, which is famous for its strong waves and known as “Capital of the waves.” The nominal capacity of the WaveRoller is 300 kW and the project will be testing for one year.

The ‘Dream Team’ consortium is led by AW-Energy and includes companies from Finland, Portugal, Germany and Belgium. Large industrial participants include Bosch-Rexroth and ABB, together with renewable energy operator Eneolica and wave energy specialist Wave Energy Center, supporting with their experience to ensure successful implementation of the project.

“The experience of our dream team consortium is a significant asset to the project, and we are thrilled about this real pan-European co-operation. AW-Energy has been working hard the last three years with two sea installed prototypes, tank testing and CFD (Computational Fluid Dynamics) simulations. Now we have the site, grid connection permission, installation license and the technology ready for the demonstration phase,” says John Liljelund, CEO at AW-Energy.

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Hydro Review, August 18, 2009

aquamarine-power_fb8xa_69Off the north coast of Scotland in waters 10 to 12 meters deep, ocean energy developer Aquamarine Power Ltd. has bolted its Oyster wave energy converter to the ocean floor and expects to be generating power by year’s end.

A team of offshore professionals eased the 194-ton converter into the sea at the European Marine Energy Center in the Orkney Islands. “Getting Oyster into the water and connected to the seabed was always going to be the most difficult step,” said Aquamarine CEO Martin McAdam. “Its completion is a real credit to everyone who has worked hard on planning and executing this major engineering feat on schedule.”

The Oyster is designed to capture energy from near-shore waves. The system includes an oscillating pump fitted with double-acting water pistons. Each wave activates the pump, delivering high-pressure water by pipeline to an onshore turbine that generates electricity. All electrical components of the Oyster are onshore, making it durable enough to withstand Scotland’s rough seas, McAdam said.

Marine constructor Fugro Seacore installed the Oyster converter under a $2.9 million contract.

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