2009 Global Wave Market Research

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    Device Device Type Stage of Development Photo/Website

    Wave Dragon

    Denmark

    Wave Dragon Ltd.

    The Wave Dragon is a floating, tapered channel device that uses a

    pair of curved reflectors to focus waves toward a ramp. The

    overtopping waves collect in a large reservoir behind the ramp

    where the water is temporarily stored. This creates a head of

    water, which is subsequently released through a number of low-

    head turbines and converted into electricity. The turbines are the

    only moving parts.

    Wave Dragon Ltd took first major step to deploy the Worlds Largest Wave

    Energy Converter (WEC) by submitting their Environmental Impact Statement.

    Plans are to deploy a 7MW device off the Dale and Marloes Peninsula

    (Pembrokeshire, Wales) during the summer of 2008. Through this application,

    the Wave Dragon is taking the first step in establishing a 70MW wave power

    plant in the Celtic Sea by 2010. The Wave Dragon Project is part funded by

    European Objective 1 funds through the Welsh Assembly Government.

    www.wavedragon.net

    Pelamis

    Scotland

    Pelamis Wave Power Ltd.

    The Pelamis Wave Energy Converter is a semi-submerged

    structure composed of cylindrical sections linked by hinged joints.

    The wave-induced motion of these joints is resisted by hydraulic

    rams, which pump high-pressure oil through hydraulic motors via

    smoothing accumulators. The hydraulic motors drive electrical

    generators to produce electricity. Power from all the joints is fed

    down a single umbilical cable to a junction on the seabed. Several

    devices can be connected together and linked to shore through a

    single seabed cable. The devices are held in place by a

    combination of floats and weights and are designed to be

    deployed 5-10 km (3-6 miles) offshore.

    September, 2007 - The UK G overnment has given permitting permission for the

    Wave Hub project - Pelamis is one of the four (4) wave device developers

    chosen to work with the Wave Hub project. March 2007 - completed work-up

    trials in the North Sea. New trials of the first machine to be complete in

    Orkney will be followed by installation of commercial wave farm in Portugal.

    The wave farm will be installed 5 km (3 miles) off the Portuguese coast, near

    Pvoa de Varim. The project will have an installed capacity of 2.25MW and is

    expected to meet the average electricity demand of more than 1500

    Portuguese households. March, 2009 - Pelamis project has been pulled

    indefinitely after a series of technical (buoyancy tank leaks) and financial

    setbacks.www.pelamiswave.com

    FO3

    Consortium of 11

    partners from EU-

    members

    SEEWEC

    A floating, half submersible platform built with composites. The

    FO3

    has a series of wave point absorbers mounted in vertical

    hydraulic cylinders, which work in both directions. The vertical

    movements of the floating-point absorbers are transformed into

    hydraulic pressure. The hydraulic pressure is utilized to generate

    power by generators.

    2006 - Norwegian authorities granted permission to build a wave power plant

    off the island of Karmy on the west coast of Norway. Following wave tank of

    the FO3

    testing in 2004, a complete laboratory platform at 1:3 scale was

    constructed and launched in February, 2005 off the Norway coast and will be

    used for data collection.

    www.seewec.org

    McCabe Wave Pump

    Ireland

    Hydam Technology, Ltd.

    Consists of a series of articulated barges, which generate

    hydraulic pressure to resist the motion of the waves. This

    hydraulic pressure can then be used to create electricity.

    The McCabe Wave Pump was developed by Dr. Peter McCabe with some

    assistance from the US Navy. The developers conducted large-scale trials of

    the device in the Shannon Estuary, which were completed by 2004. June 2008 -

    no recent updates available.

    Archimedes Waveswing

    Scotland

    AWS Ocean Energy Ltd.

    The Archimedes Waveswing is a cylinder shaped buoy, fastened

    to the seabed. Passing waves move an air-filled upper casing

    against a lower fixed cylinder, with up and down movement

    converted into electricity. The floater, which compresses gas

    within the cylinder to balance pressures, is the only moving part.

    A 50MW is expected to generate electricity for 25,000 homes.

    In October, 2004, the AWS team declared pilot tests to be 'very successful' with

    the technology being fully proven and a total peak power of around 1500kW

    having been produced. In February, 2007 AWS secured 2.1million in funding

    from the Scottish Executive, which will be used for development and

    commercialization. In September, 2007 additional funding was received from

    the Carbon Trust, and will gear toward commercial deployment within the next

    five (5) years. In May, 2008, new investments from the Shell Technologies

    Venture Fun will aid in deploying a demonstration 250KW pre-commercial

    prototype at Orkneys European Marine Energy Centre in 2009. This is

    expected to lead to the first phase of a commercial demonstration farm in

    2011, which may expand to 100 AWS units within three (3) years.

    www.waveswing.com

    Global Wave Market Research - May 2009

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    AquaBuOY

    British Columbia

    Finavera Renewables

    The AquaBuOY is a floating buoy structure which utilizes a

    cylindrical buoy as a displacer and water acts as a reactor

    enclosed by a long vertical tube underneath the buoy. As the

    buoy rides the waves, the moving seawater drives a piston inside

    the tube, and the motion of the piston in turn drives a two-stroke

    hose pump. As the hose elongates its internal volume decreases

    to create a pressurized flow of seawater, which turns a turbine.

    The power is transmitted to shore by means of a secure,

    undersea transmission line.

    The AquaBuOY 2.0 was deployed in Pacific off the coast of Oregon in

    September, 2007. In December, 2007 Finavera Renewables was granted an

    operating license for its Makah Bay, Washington pilot project to construct an

    offshore power plant which is expected to generate 1500MW/Year.

    November, 2007 - AquaBuOY began taking in water and sank before engineers

    had the opportunity to remove it.

    www.finavera.com/en/wavetech

    PSP

    USA

    Float, Inc.

    A pneumatic floating platform utilizes indirect displacement, in

    which the platform rests on trapped air that displaces the water.

    The primary buoyancy force is provided by air pressure acting on

    the underside of the deck. When needed, air is allowed to flow

    from one cylinder to another through a manifold or connecting

    orifices. The airflow provides a mechanism to help reduce the

    peaks in pressure distribution beneath the structure and provide

    platform stability as well as a mechanism for dissipating wave

    energy. Directing the moving air through turbo-generators to

    produce electrical energy is one means of converting wave

    energy into electricity with a PSP.

    August, 2006 have a number of projects under active consideration involving

    various uses of the PSP which include oil and gas industry applications, floating

    yacht harbors, and ocean wave energy conversion. No specific details are

    disclosed on the web site.

    www.floatinc.com

    OMI WavePump

    USA

    Ocean Motion Int'l

    A barge type platform consisting of large buoyant vessels which

    ride the wave surface. When a trough passes and a vessel is no

    long supported, a heavy ballast mass descends and pressurizes

    water in a sleeve type pump. The pressurized water is driven up

    through a cavity in the main shaft into the manifold which

    combines multiple pump assemblies. The combined pump

    outputs drives the hydro-turbine generator, osmosis filters, and

    electrolysis unit. The barge type platform consists of 20-35

    pumps.

    June, 2008 - No detailed project activity reported. Company website states,

    Ocean Motion International has achieved much academic success for its

    patented technologies and vision. Four independent studies have been

    completed in the Gulf of Cadiz, Spain covering concept, structures, risk and

    environment. These studies have resulted in a product design that is

    impressive in its functionality and relative low cost to construct and operate.

    www.oceanmotion.ws

    PowerBuoy

    USA

    Ocean Power Technologies

    The rising and falling of waves cause the buoy to move freely upand down. The resultant mechanical stroking is converted via a

    power take-off to drive an electrical generator. The generated

    power is transmitted ashore via an underwater power cable. An

    array of PowerBuoys can be electrically connected together to

    provide the desired power capacity.

    Santoa, Spain Project hired by Iberdrola S.A. to build a power station off the

    northern coast of Spain. Based in Madrid, Iberdrola is one of the largest

    renewable energy companies worldwide. OPT reports that the project is in

    development; first phase complete; and building the second phase consisting

    of a subsea power transmission cable, underwater substation, grid connection,

    and the first PowerBuoy unit. May, 2008 OPT and Griffin Energy sign joint

    development agreement for western Australian wave power station. The wave

    power station would be capable of producing up to 10MW with potential

    expansion up to 100MW.www.oceanpowertechnologies.com

    MWEC Power Take Off

    USA

    SARA, Inc.

    A shaft transfers wave motion to the magnetohydrodynamic

    (MHD) generator which is deep under water. The shaft forces the

    conducting fluid through powerful permanent magnets. The low

    voltage/high current electricity is generated via MHD interaction.

    An electrical converter converts the electrical energy to

    commercial quality power and is transmitted to shore from

    multiple generating stations and connected to the grid.

    SARA, Inc. has designed, built and tested a 100KW MHD generator that is a

    laboratory demonstration of a MWEC design and is also developing a deep-

    ocean-moored concept that is based on the MHD generator.

    www.sara.com

    http://www.finavera.com/en/wavetechhttp://www.floatinc.com/http://www.floatinc.com/http://www.finavera.com/en/wavetech
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    The Denniss-Auld Turbine

    Australia

    Oceanlinx

    The water inside the OWC (a chamber which is open underneath

    the waterline) rises and falls, compressing and displacing the air

    inside, driving it past a turbine which is housed at the narrowest

    point in the chamber. The OWC chamber narrows, and the air is

    accelerated to its highest velocity as it passes the turbine,

    allowing for maximal extraction of the energy. The oscillatory

    wave motion causes a similar oscillatory airflow through the

    chamber, and the turbine converts energy on both the up and

    down stroke. The turbine converts the energy in the airflow intomechanical energy which drives an electrical generator.

    Port Kembla Project - Oceanlinxs wave energy generator was successfully

    installed in December 2006, a few hundred meters off the eastern breakwater

    of Port Kembla harbor. The unit transforms the raw energy from ocean waves

    into electricity or desalinated water. When connected to the local power grid

    the plant could supply power to up to 500 homes and serve as a valuable test

    facility for further technology development. In May 2007, Oceanlinx was

    selected as the fourth developer for the Lira28million wave project off the

    coast of Cornwall in South West England. In February 2008, Oceanlinx

    announced a potential project to supply up to 2.7MW of electricity to the

    island of Maui, Hawaii. The wave energy converters (WECs) will be installed

    approximately 1KM off the North coast of Maui. A sub-sea cable will run from

    the WEC array along the sea-bed with a shore crossing in to the East of Maliko

    Bay, where it will feed into a substation on the Maui Electric Company grid.

    www.oceanlinx.com

    Wavebob

    Ireland

    Wavebob Ltd.

    An axi-symmetric, self-reacting point absorber, primarily

    operating in the heave mode. The Wavebob floats largely below

    the water surface and is self-reacting and loosely moored. It uses

    the lift and fall of waves to pump giant pistons which in turn drive

    alternators to generate electricity for delivery via cables back to

    the shore.

    In March 2006, a one quarter scale prototype was installed in Galway Bay.

    Developers have an ongoing test program of development at the test site. In

    April 2007 it was announced that Wavebob has partnered with US energy

    company Chevron to provide technical consulting services. The partnership

    will look at converting ocean wave energy into useful power. In October 2007,

    Wavebob announced that their prototype device is producing electricity.

    www.wavebob.com

    Sperboy

    United Kingdom

    Embley Energy

    An Oscillating Water Column (OWC) device consisting of a

    buoyant structure with a submerged & enclosed column. All of

    the plant, turbines, generators, and associated system facilities

    are housed above the OWC on top of the buoy. The principle of

    operation is similar to that of fixed OWCs designed for shoreline

    and fixed installations, except that the device is capable of

    deployment in deep water to maximize greatest energy source,

    and the entire body floats and maintains optimum hydrodynamic

    interactions for the prevailing and changing wave spectrum.

    From 2003-2005, Sperboy completed the Marine Energy Challenge, where

    independent consultants investigated its performance in terms of power

    capture as well as c arrying out a detailed study of both capital and

    maintenance costings to arrive at their prediction for the cost of delivered

    power. In 2007, Sperboy announced project work with the Universities of

    Bristol and The West of E ngland.

    www.sperboy.com

    Oyster

    Scotland

    Aquamarine Power

    The Oyster consists of an oscillating wave surge converter fitted

    with double acting water pistons fixed to the seabed and

    deployed near shore. Each passing wave activates the pump;

    which delivers high pressure water via a sub-sea pipeline to the

    shore. Onshore, high-pressure water is converted to electrical

    power using conventional hydro-electric generators.

    In 2006, scale models were tested at Queens University Belfast. In 2007,

    Oyster has been fully fabricated and tested. Also has been certified by

    independent third parties and ready for installation at EMEC in Ornkey. April

    2009 - device has now produced and exported commercially viable electricity

    to the grid and the New and Renewable Energy Centre (NaREC) near Newcastle

    for the first time.

    www.aquamarinepower.com

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    Wave Rider

    USA

    SeaVolt Technologies

    Wave Rider consists of a special point absorbing buoy which bobs

    up and down with wave action on the ocean surface. Electricity is

    generated via a small turbine powered by an hydraulic circuit that

    captures the slow rolling energy of the wave and converts it into

    high-pressure hydraulic fluid flow, spinning a turbine to generate

    electricity.

    Wave tank tested and now participating in a UK wave research study called the

    Marine Energy Challenge. June 2008 no recent updates available.

    Mighty Whale

    JapanJAMSTEC

    The Mighty Whale is a floating oscillating water column device

    with three air chambers. Wave action causes the internal water

    level in each chamber to rise and fall, forcing a bi-directional

    airflow over an air turbine. All three chambers are self-

    reciprocating and each turbine has two rotors in tandem

    configuration.

    Launch in March, 1998. June 2008 no recent updates available.

    www.jamstec.go.jp/jamstec/mtd/whale

    LIMPET,

    Scotland

    Wavegen

    A shoreline energy converter which uses the principal of an

    oscillating water column that couples with the surge-dominated

    wave field adjacent to the shore. The design of the air chamber is

    important to maximize the capture of wave energy and

    conversion to pneumatic power. The turbines are carefully

    matched to the air chamber to maximize power output.

    One installation on the Island of Islay in Scotland and a second planned

    installation with the Faroese electricity company. The Islay installation

    performance has been optimized for annual average wave intensities of

    between 15 and 25kw/m. The water column feeds a pair of counter-rotating

    turbines, each of which drives a 250kw generator, giving a nameplate rating of

    500kw. June 2008 - no recent updates available.

    www.wavegen.co.uk

    PS Frog

    United Kingdom

    Lancaster University

    The PS Frog consists of a pitching/surging paddle about 20m wide

    and 15m deep. A handle connects the blade to a massive fixed

    ballast compartment, and an arm carrying a power take-off mass

    is pivoted to the top of the blade. The arm and mass move

    approximately harmonically, and power is extracted through their

    relative movements

    Some tanks testing has been completed. There are no immediate plans for

    deployment. January 2005 participating in the UK Marine Energy Challenge.

    June 2008 no recent updates available.

    Ocean Wave Energy

    Converter (OWEC)USA

    Ocean Waver Energy Co.

    Wave activity on buoys induces relative motion between

    driveshafts and remaining module portions to drive novel

    transmissions and electrical generators. Electrical power isadditively combined, within each module housing, and

    interconnected with other modules to culminate at output

    terminals.

    June 2007 - Last noted that engineers were to refine OWECOs third direct

    drive generator. The new design raises relative speed and power efficiency

    with substantially reduced materials. Initial wave tank tests where electrical

    outputs were slightly low for scale. The mechanisms of the apparatus

    functioned as intended and measurable electrical energy was generated fromwave motion. Testing was valuable for successfully proving the concept and

    divulging considerations for subsequent OWEC design development. While

    promising, wave tank tests also revealed meritorious deficiencies.

    www.owec.com

    Wave Energy Converter

    Activator (WECA)

    Greece

    DaeDalus

    Designed for mounting on the run up wall of breakwaters or

    other rigid or floating structures. Functionally, it serves the

    purpose of absorbing most of the energy of the impacting waves

    and turns it into compressed air (subsequently converted into

    electric power or other forms of work).

    June 2008 no recent updates available.

    www.daedalus.gr

    http://www.wavegen.co.uk/http://www.wavegen.co.uk/
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    Danish Point Absorber

    Denmark

    Danish Wave Energy

    Program

    This point absorber system is built from small pontoons each

    approx. 10 meters in diameter. The pontoons can be mass-

    produced and each pontoon absorbs a maximum of 100-140 kw

    from the waves. The pontoons activate pumps situated on the

    sea bed which transforms the energy via a hydraulic system to

    turbines and generators.

    The practical tests performed off Hanstholm in the North Sea have not been

    without difficulties. In the first system (45 kw in 1989), the valves and cable

    joints failed causing the pontoon to come adrift. The following 1 kw

    experiment was launched in the summer of 1994 but after three months the

    pontoon sank due to corrosion. After incorporating the experiences of the first

    systems, a third attempt was made in May 1995 and this system worked

    reliably until it was terminated in January 1996.

    Seawave Slot-Cone

    Generator

    Norway

    WAVEenergy AS

    The SSG is a wave energy converter based on the wave

    overtopping principle utilizing a total of three reservoirs placed on

    top of each other, in which the potential energy of the incoming

    wave will be stored. The water captured in the reservoirs will

    then run through the multi-stage turbine for electricity

    production. The use of multiple reservoirs will result in a higher

    overall efficiency compared to a single reservoir structure.

    Planning a pilot project with a number of partners on the Island of Kvitsy

    located in the Bokna fjord adjacent to the Norwegian North Sea. January 2005 -

    MST Project In cooperation with Norwegian University of Science &

    Technology (NUNU), develop a multi-stage water turbine which can utilize

    different heights of water head on a common turbine wheel. The Project is

    supported by the Renergi program of the Norwegian Research Council. June

    2008 no recent updates available.

    www.waveenergy.no

    WaveRoller

    Finland

    AW-Energy

    The WaveRoller device is a plate anchored on the sea bottom by

    its lower part. The back and forth movement of bottom waves

    moves the plate, and the kinetic energy produced is collected by

    a piston pump. This energy can be converted to electricity by a

    closed hydraulic system in combination with a hydraulic

    motor/generator system. WaveRoller is a modular concept. Inpractice this means that the plant capacity is formed by

    connecting a number of production modules into a WaveRoller

    plant. Each module consists of 3-5 wave elements installed into a

    common generation system.

    2006 - Design and manufacturing of WaveRoller #1. 2007 - Installation and

    commissioning of WaveRoller #1 in Portugal was underway with complete

    measurement and analysis of device performance targeted for June 2007.

    Plans are to construct a pilot plant in Portugal in 2008. April 2008 -

    Deployment of the second proto device in Peniche, Portugal. Data collectedduring the test period will be used for verification of the CFD simulations and

    designing of the next generation active controlled WaveRoller unit. First

    results will be available in July, 2008.

    www.aw-energy.com

    WavePlane

    Scotland

    WavePlane

    The water inlet duct is divided into four (or more) pockets and

    each pocket is smoothly connected to one edge of an outlet pipe

    with different points and angles. The multiple pockets system

    converts both kinetic and potential energies of the ocean wave

    into swirl flow in the outlet pipe.

    Built and tested in real sea conditions in Japan. To date the device has not

    been used to produce electricity though a 200 kW version is planned but

    already has shown the potential for use in oxygenating water, reverse osmosis

    and water pumping. June 2008 - no recent updates available.

    www.waveplane.com

    Wave Rotor

    Denmark

    ECOFYS

    Two types of rotors were combined on the same axis of rotation:

    a Darrieus rotor and a Wells rotor. These are respectively omni-

    and bi-directional rotors, which can operate in currents of

    changing directions. The Wave Rotor captures wave energy from

    the circulating water particles in the waves creating local

    currents. The developers discovered that these circular currents

    can directly drive a rotor.

    A prototype was developed by ECOFYS together with Danish partner Eric

    Rossen. Tests were to take place in the summer of 2002 in the Nissum

    Bredning fjord on the north-west coast of Denmark. The Wave Rotor would be

    mounted to a platform and tested for performance, foundation loads, and

    electricity production. The rotor can be grid connected via an inverter and

    supply energy to the grid. No information available regarding the results of this

    testing. January 2005 - Participating in the Marine Energy Challenge

    www.ecofys.co.uk

    http://www.waveenergy.no/http://www.aw-energy.com/http://www.waveplane.com/http://www.ecofys.co.uk/http://www.ecofys.co.uk/http://www.waveplane.com/http://www.aw-energy.com/http://www.waveenergy.no/
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    Cylindrical Energy

    Transfer Oscillating

    (CETO)

    Australia

    CETO

    The CETO is fully-submerged and anchored to the sea floor. Can

    be deployed in arrays of multiple units. Returns high-pressure

    seawater ashore.

    February 2007 The first CETO II prototype was unveiled. February 2008 The

    CETO II was deployed in January and has performed as expected following

    previous onshore testing. Subsequent CETO II units will be deployed over the

    coming months.

    www.ceto.com.au

    Lever Operated PivotingFloat

    USA

    Swellfuel

    A device comprising a pivoting float and lever arm combinationattached to a beam such that the float and lever arm can unfold

    and change orientation to the ocean surface. The devices

    pivoting arms allow it to convert ocean energy to other forms.

    June 5 although multiple prototypes have been tested (some in ocean

    conditions), patents for the technology are still pending. Company is self-

    funded and currently looking to commercialize but they believe full-scale

    development will take about four more years. The output goal for this

    technology is 100kw.

    www.swellfuel.com

    Mark IV Sloped Buoy

    Sweden

    Inter Project Services

    The sloped IPS buoy is an asymmetric, solo, deep-water,

    resonant, slack-moored, wide point-absorber with high-pressure

    oil power conversion reacting to an internal water mass which

    can be disconnected at a c hosen stroke limit.

    Model testing. No update as of January 2005. June 2008 - no recent updates

    available.

    www.mech.ed.ac.uk/research/wavepower/slo

    ped%20IPS/Maritec2001%202.htm

    Offshore OWC

    Norway

    Kvaerner

    Oscillating Water Column.

    Kvaerner is a holding company. A project in the South Pacific almost lead to

    the building of an oscillating water column wave power plant on the south

    coast of Tongatapu in the late 1980s. However, the manufacturer, Kvaerner

    Brug pulled out of wave power, and it was never built. June 2008 - no recent

    updates available.

    www.kvaerner.com

    Salter Duck

    United Kingdom

    Edinburgh University

    The Duck is a 300-ton floating canister designed to drive a

    generator from the motion of bobbing up and down on waves likea duck. It was developed in the late 1970's by a team headed by

    Professor Stephen Salter at Edinburgh University. This was one of

    several research groups set up after a 1976 judgment by the

    Department of Energy that wave power was the most promising

    renewable energy source.

    The Salter Duck's development was stalled during the late 1980's, even though

    it was able to produce energy efficiently. A mistake was made in the cost of

    the energy production by a factor of ten. June 2008 - no recent updates

    available.

    Sea Clam

    The Sea Clam is an arrangement of six airbags mounted around a

    hollow circular spine. As waves impact on the structure air is

    forced between the six bags via the hollow spine which is

    equipped with self-rectifying turbines. Even allowing for cabling

    to shore, it is calculated that the Clam can produce energy for

    around $US0.06kw/hour.

    June 2008 - no recent updates available.

    No Photo

    http://www.ceto.com.au/http://www.swellfuel.com/http://www.mech.ed.ac.uk/research/wavepower/sloped%20IPS/Maritec2001%202.htmhttp://www.mech.ed.ac.uk/research/wavepower/sloped%20IPS/Maritec2001%202.htmhttp://www.kvaerner.com/http://www.kvaerner.com/http://www.mech.ed.ac.uk/research/wavepower/sloped%20IPS/Maritec2001%202.htmhttp://www.mech.ed.ac.uk/research/wavepower/sloped%20IPS/Maritec2001%202.htmhttp://www.swellfuel.com/http://www.ceto.com.au/
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    Tapchan

    Norway

    A tapered channel (Tapchan) feeds into a reservoir which is

    constructed on a cliff. The narrowing of the channel causes the

    waves to increase their amplitude (wave height) as they move

    toward the cliff face which eventually spills over the walls of the

    channel and into the reservoir which is positioned several meters

    above mean sea level. The kinetic energy of the moving wave is

    converted into potential energy as the water is stored in the

    reservoir. The stored water is then fed through a Kaplan turbine.

    A demonstration device with rated output of 350 kw began operating in 1985

    at Toftesfallen, in Norway until the early 1990s, when work on modifying the

    device destroyed the tapered channel. The potential market for such an

    approach is limited because the design requires a small tidal range and suitable

    coastline. Therefore, this device would be better suited to islands. June 2008 -

    no recent updates available.

    PendulorMuroran Institute of

    Technology and Cold-

    Region Port & Harbor

    Research Center

    Wave action causes oscillation of the plate ("Pendulor"), and the

    pendulor compresses fluid in a hydraulic power take off. The

    second-generation prototype uses active control for efficient

    energy conversion.

    The Pendulor wave energy device has been under investigation for over 15

    years by the Muroran Institute of Technology. June 2008 - no recent updates

    available.

    www.muroran-it.ac.jp

    OSPREY

    Wavegen

    The OSPREY rests directly on the seabed and is designed to

    operate in the near-shore environment in a nominal mean water

    depth of 15m. The pneumatic power of the oscillating water

    column is converted to electricity by a Wells turbo generator and

    specially designed induction generators.

    June 2008 - no recent updates available.

    www.wavegen.co.uk

    Backward Bend

    Duct Buoy

    Yoshio Masuda

    A floating type wave energy device. It uses an oscillating column

    of water in reverse "L" shaped chambers or ducts, such that the

    open mouth of the duct is away from the incident waves. The

    horizontal limb has an opening to the sea and is submerged under

    water. The vertical limb traps a column of air at the upper region

    of the duct and a regulated vent allows air to pass in and out

    under cyclic pressure and partial evacuation of air due to

    oscillating water surface.

    June 2008 - no recent updates available.

    Swedish HosepumpSweden

    Incorporated into the Aquabouy. Floating buoy pumps seawateracross water turbine.

    During 1983-1984 a plant of three modules with turbine and generator was

    installed in the open sea at Vigna. There were losses of equipment in somesevere storms but the tests proved the feasibility of this approach. June 2008 -

    no recent updates available.

    Electroactive Polymer

    Artificial Muscle

    (EPAM)

    Japan

    SRI International

    A buoy-mounted, wave powered generator. It is composed of a

    rubbery material that can generate electricity by being stretched

    and allowed to return to its original shape.

    December 2009 - demonstrated and tested module off the coast of California.

    www.sri.com/news/releases/120808.html

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