CETO Wave Power
Encyclopedia
CETO is a wave energy technology that converts ocean swell
s into renewable power and desalinated
freshwater. It was developed by Carnegie Wave Energy Limited, an Australian ASX-listed inventor and owner of the patented device. Carnegie raised over $45m to fund the development of the technology which it has tested off Fremantle
, and Garden Island
(HMAS Stirling
), Western Australia
.
CETO is designed to be a simple and robust wave technology. CETO is the only ocean-tested wave energy technology globally that is both fully submerged and generates power and or desalinated water onshore. The CETO technology has been independently verified by EDF – Energies Nouvelles
(EDF EN) and the French naval contractor DCNS.
, the CETO system distinguishes itself from other traditional wave energy
devices by being a fully submerged, pumping technology that drives the hydraulic fluid onshore therefore generating power by a standard Reverse osmosis
system. Submerged buoys are moved up and down by the ocean swell, driving pumps which pressurize freshwater that is delivered ashore by a subsea pipeline. Once onshore, the high-pressure freshwater is used to drive hydro turbines, generating zero-emission electricity. The high-pressure water can also used to supply a reverse osmosis
desalination plant, creating zero-emission freshwater. Currently, seawater desalination plants are large emitters of greenhouse gases due to the amount of energy required to drive grid-connected pumps that deliver the high pressure seawater to reverse osmosis membranes which remove the salt from the seawater.
Traditionally, wave technologies are characterized as offshore, floating power stations.
Stage 2 of the project involves the design, construction, deployment and operational performance evaluation of a grid-connected commercial-scale wave energy demonstration project, also at Garden Island. The facility will consist of multiple submerged CETO units in an array, subsea pipeline(s) to shore, hydraulic conditioning equipment and an onshore power generation facility.
Ocean Swell
Ocean Swell was a British Thoroughbred racehorse and sire. In a career that lasted from 1943 to 1945 he ran fifteen times and won six races. As a three-year-old 1944 he won the New Derby, a wartime substitute for the Epsom Derby run at Newmarket...
s into renewable power and desalinated
Desalination
Desalination, desalinization, or desalinisation refers to any of several processes that remove some amount of salt and other minerals from saline water...
freshwater. It was developed by Carnegie Wave Energy Limited, an Australian ASX-listed inventor and owner of the patented device. Carnegie raised over $45m to fund the development of the technology which it has tested off Fremantle
Fremantle
Freemantle is a suburb of Southampton in England.Fremantle or Freemantle may also refer to:- Places :* Fremantle, the port city to the capital Perth, Western Australia...
, and Garden Island
Garden Island
Garden Island may refer to:Australia:* Garden Island, New South Wales* Garden Island, Tasmania* Garden Island , near PerthCanada:* Garden Island , Ontario* Garden Island , Ontario...
(HMAS Stirling
HMAS Stirling
HMAS Stirling is the Royal Australian Navy's primary base on the west coast of Australia. It is located on Garden Island in the state of Western Australia, near the city of Perth...
), Western Australia
Western Australia
Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...
.
CETO is designed to be a simple and robust wave technology. CETO is the only ocean-tested wave energy technology globally that is both fully submerged and generates power and or desalinated water onshore. The CETO technology has been independently verified by EDF – Energies Nouvelles
Électricité de France
Électricité de France S.A. is the second largest French utility company. Headquartered in Paris, France, with €65.2 billion in revenues in 2010, EDF operates a diverse portfolio of 120,000+ megawatts of generation capacity in Europe, Latin America, Asia, the Middle East and Africa.EDF is one of...
(EDF EN) and the French naval contractor DCNS.
Technology
Named after a Greek ocean goddess, CetoCeto
In ancient Greek, the word ketos - Latinized as cetus - denotes a large fish, a whale, a shark, or a sea monster. The sea monsters slain by Perseus and Heracles were each referred to as a cetus by ancient sources. The term cetacean originates from cetus. In Greek art, cetea were depicted as...
, the CETO system distinguishes itself from other traditional wave energy
Wave power
Wave power is the transport of energy by ocean surface waves, and the capture of that energy to do useful work — for example, electricity generation, water desalination, or the pumping of water...
devices by being a fully submerged, pumping technology that drives the hydraulic fluid onshore therefore generating power by a standard Reverse osmosis
Reverse osmosis
Reverse osmosis is a membrane technical filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and...
system. Submerged buoys are moved up and down by the ocean swell, driving pumps which pressurize freshwater that is delivered ashore by a subsea pipeline. Once onshore, the high-pressure freshwater is used to drive hydro turbines, generating zero-emission electricity. The high-pressure water can also used to supply a reverse osmosis
Reverse osmosis
Reverse osmosis is a membrane technical filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and...
desalination plant, creating zero-emission freshwater. Currently, seawater desalination plants are large emitters of greenhouse gases due to the amount of energy required to drive grid-connected pumps that deliver the high pressure seawater to reverse osmosis membranes which remove the salt from the seawater.
Traditionally, wave technologies are characterized as offshore, floating power stations.
Commercial Demonstration and Independent Verification of Results
Upon completion of Stage 1 of the Perth Wave Energy Project, Carnegie enlisted Frazer-Nash consultancy to verify the CETO 3 unit's measured and modelled capacity. During the CETO 3 in-ocean trial, Frazer-Nash verified the peak measured capacity to be 78kW and delivered a sustained pressure of 77bar, above what is required for sea water reverse osmosis desalination.Perth Wave Energy Project (PWEP)
Stage 1 which has already been completed, involved the manufacture, deployment and testing of a single commercial-scale autonomous CETO unit off Garden Island. For this stage, the CETO unit was not connected to shore but was stand-alone and autonomous, providing telemetric data back to shore for confirmation and independent verification of the unit's performance.Stage 2 of the project involves the design, construction, deployment and operational performance evaluation of a grid-connected commercial-scale wave energy demonstration project, also at Garden Island. The facility will consist of multiple submerged CETO units in an array, subsea pipeline(s) to shore, hydraulic conditioning equipment and an onshore power generation facility.
La Réunion Wave Energy Project
The Réunion Island project is a Joint Venture (JV) project between Carnegie and EDF Energies Nouvelles. The project will initially consist of the deployment of a single, autonomous commercial scale unit (stage 1) which will be followed by a 2MW plant (stage 2) and a further expansion of the project to a nominal 15MW installed capacity (stage 3). Stage 1 of the project has been awarded $5M of French Government funding.Ireland Wave Energy Project
Carnegie has signed a formal funding and collaboration agreement with the Irish Government's Sustainable Energy Association (SEAI) for a €150,000 project to evaluate potential CETO wave sites in Ireland and develop a site specific conceptual design. The project is 50% funded by the SEAI and 50% by Carnegie and forms the first phase of detailed design for a potential 5MW commercial demonstration project in Irish waters. The project was underway in 2011 and is being managed through Carnegie's Irish subsidiary, CETO Wave Energy Ireland Limited.Relationships
- Western Australian Government - $12.5m grant for the Perth Wave Energy Project at Garden Island.
- Australian Department of Defence & Defence Support Group - MoU for Collaboration on a CETO power and water project and offtake.
- EDF EN - Northern Hemisphere CETO Power licensee and JV development partner.
- French Government - $5m grant for Carnegie/EDF EN Stage 1 Réunion Island power project.
- DCNS - Northern HemisphereEPCM partner.
- Sustainable Energy Authority of Ireland - Collaboration agreement & concept funding for a 5MW Irish CETO power project.
- British Columbia Government - Grant of $2 million for a Canadian CETO project.
- Australian National Centre of Excellence in Desalination - Desalination research project with funding granted.
Other wave energy & CETO characteristics
- Wave energy is a renewable, high availability, zero emissionZero emissionZero emission refers to an engine, motor, or other energy source, that emits no waste products that pollutes the environment or disrupts the climate.-Zero emission engines:...
source of power. - Approximately 60% of the world lives within 60 kilometers of a coast, minimising transmission issues.
- Since water is about 800 times denser than air, the energy density of waves exceeds wind and solar, thus increasing the amount of energy available for harvesting.
- Waves are predictable in advance, making it easy to match supply and demand.
- CETO sits underwater, moored to the sea floor, meaning there is no visual impact.
- CETO units operate in deep water, away from breaking waves. The waves regenerate once they pass the CETO units, meaning there is no impact on popular surfing sites.
- CETO units are designed to operate in harmony with the waves, rather than attempting to resist them. This means there is no need for massive steel and concrete structures to be built.
- CETO is the only wave energy technology that produces fresh water directly from wave energy by magnifying the pressure variations in ocean waves.
- Any combination of power and water can be achieved from 100% power to 100% water, combinations can be changed rapidly allowing intraday production modulation.
- CETO contains no oils, lubricants or offshore electrical components. It is built largely from existing offshore components with a known sub-sea life of over 25 years.
- CETO units act like artificial reefs, because of the way they attract marine life.
See also
- Wave energy
- Water desalination
- Wave farmWave farmA wave farm or wave power farm is a collection of machines in the same location and used for the generation of wave power electricity.-Portugal:...
- Baseload
- Reverse OsmosisReverse osmosisReverse osmosis is a membrane technical filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and...
- World energy resources and consumptionWorld energy resources and consumption]World energy consumption in 2010: over 5% growthEnergy markets have combined crisis recovery and strong industry dynamism. Energy consumption in the G20 soared by more than 5% in 2010, after the slight decrease of 2009. This strong increase is the result of two converging trends...