Renewable Energy Holdings PLC

CETO is the first wave power converter to sit on the seabed, where it is invisible, safe from storms and ocean forces, and self contained. Unlike other wave energy technologies that require undersea grids and costly marine qualified plant, CETO requires only a small diameter pipe to carry high pressure seawater ashore to either a turbine to produce electricity, or to a reverse osmosis filter to produce fresh water.

Ceto is a revolutionary wave power generation system which uses arrays of submerged diaphragm units which use pressurised sea water to operate land based generation equipment. This greatly simplifies operation and maintenance whilst having the added benefits of being unobtrusive to the environment and not presenting a hazard to shipping

The CETO unit is currently pumping sea water to shore and the unit is undergoing intensive tests and analysis.

Principle of Operation:

CETO is an oscillating wave pump which pumps high pressure seawater through a pipe to carry it ashore to either turn a turbine to produce electricity, or to a reverse osmosis filter to produce fresh water, or a combination of both. CETO wave energy converters are anchored permanently on the sea floor. They are also self-tuning to tide, sea state and wave pattern. CETO is built of steel and rubber.

The CETO concept pictured above is implemented in a demonstration phase (CETO II) comprising up to 9 units in a 3 x 3 array at the shallow water Fremantle test site. The commercial demonstration version (CETO III) will be deployed at commercial sites with 100’s of units in an array.

Forecasted CETO III Specifications:

Device Width: 7m
Device Height: From seabed to within 1-2 m of water surface
Average power output: 100kW per unit (based on wave resources at sites surveyed)
Max rated power: 180 kW per unit
Weight: 12 tons pump and float; 100 ton with clump anchors
Deployment Depth: 15 to 100 m

Development Status & Milestones:

Aug 2003 – Renewable Holding began detailed design of CETO I.
May 2005 – CETO was towed out to sea and successfully sunk and ballasted. Operation began.
Jun 2006 – One year of CETO I tests completed.
Nov 2006- CETO I re floated and salvaged.
March 2007 CETO II units deployed at Fremantle test site.
Commercial demonstration projects based on CETO III to follow in 2008 after completion of CETO II trials.

Company expects that commercial units will be available for deployment about 2010.

Company Profile:

Company founded in 2004
$5 million invested to date
9 employees involved in CETO development at end of 2006

Contact:
Renewable Energy Holdings plc
Tel: +44 (0) 1624 641199
Email: [email protected]