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Sustainable Electricity
The Search For Sydney Water .

Energetech Australia Pty Ltd has changed its company name to Oceanlinx Limited.
The company also has a new web site at www.oceanlinx.com.
Please visit this site from now on for information on the company.

Wave Energy Barge WEB
Uisce Beatha “Water of Life”
In Australia  we have Energetech currently testing electricity and desalination powered directly from the ocean off Port Kembla.

PRESS RELEASE 26 October 2005

Energetech Oct 2005 - Media Release:


On Wednesday 26 October, Energetech Australia successfully demonstrated the capacity of its  patented wave energy conversion technology at its test site in Port Kembla, New South Wales.   

With independent observers on board, Energetech’s wave energy barge (WEB) was towed out  beyond the Port Kembla breakwater.  During periods of significant wave activity, the WEB, which  was christened “Uisce Beatha” (meaning, appropriately, “Water of Life” in Gaelic), performed  beyond expectations, according to Energetech Project Director, Emil de Graaff.   

Over the test period, Energetech’s patented Denniss-Auld Turbine generated power, despite the  fact that the floating configuration was not optimised (during this particular test) for maximum wave  heights. This power was then used to generate electricity via the on-board generator and produce  fresh water via the on-board desalination plant.  The water samples collected are being  independently verified against local water standards.   

This is the first time in the world that a floating water column has successfully generated power,  and also a world first in the use of a turbine with rotating blades.   

Tom Engelsman, CEO of Energetech, who was on board Uisce Beatha for the trial, said,  “We are  delighted with the results of today’s trial which validated all aspects of our technology, even in a  preliminary deployment.  We are planning a longer operating period but we now have sufficient  data to move on to commercial projects both in Australia and around the world.”   

“I would also like to sincerely thank Dr Ray Alcorn and the engineering team, and Emil de Graaff,  our Port Kembla Project Director for their enthusiasm, hard work and dedication in achieving this  result, and congratulate Tom Denniss, the inventor of the turbine, on the realisation of his vision,”  he added.   

Energetech is a renewable energy technology development and industry advisory company.  The company has developed a new and  commercially efficient system for extracting energy from ocean waves and converting it to electricity or desalinated water.  The  Energetech technology now makes it possible for wave energy to provide a cheap, sustainable source of power or water to gridconnected and remote users.


What device will be installed at the Port Kembla Site and how will it work?
Energetech has worked collaboratively with JP Kenny Pty Ltd to successfully design a moored structure made of structural steel. The device and accompanying structure is designed to withstand a 1 in 100 year storm.

In brief, the system employs a parabolic wall to focus wave energy on to an Oscillating Water Column (OWC) chamber. The rising and falling motion of the waves causes an oscillatory water motion within the chamber, which in turn forces a high-speed airflow past a unique controllable turbine. The turbine drives an induction generator to produce electrical power. System components are computer controlled to optimize energy conversion in a range of conditions and to automatically protect system components and ensure safety

The plant will also include a small desalination unit. This unit will produce nearly 2000 litres of fresh drinkable water per day using nothing but water and power directly from the ocean itself.

(see update below)

This will be a world first, and will demonstrate what is expected to become a very important component of the technology. Wave energy is considered to have the potential to eventually supply a meaningful proportion of the world's fresh water.

Press Releases

Sep 2005: Ocean Waves Offer Sustainable Solution to Looming Water Crisis

A unique low-energy water desalination solution has been developed by two innovative Australian companies working in cooperation - Energetech Australia Pty Limited (Energetech) and H2AU Pty Limited (H2AU).

Water has long been determined as a critical resource for any society and, due to the recent concerns with regard to global climate changes, as well as overall energy costs and greenhouse emissions, this global concern has become a major policy issue. The changing rainfall patterns have left many catchment areas in Australia bereft of the necessary water levels to sustain demand, and water restrictions have become a serious problem in many areas of the country.


Energetech has developed and demonstrated a patented process to extract commercially viable  energy from the ocean waves, and operates a full scale unit in Port Kembla, Wollongong. This unit generates electrical power which can be supplied to the local community grid, but also has a small reverse osmosis unit to make fresh water from the same clean wave energy.

    Wyong based H2AU is a leading systems integrator for modular reverse osmosis units, and has been very successful with the supply of such systems for ocean liners and other commercial applications. The H2AU Managing Director, Mr. David Murdoch, said that the current work with Energetech is “an exciting extension of this well known technology, and can certainly have direct application in Australia and around the world. Desalination of this type is very cost competitive, and with the low cost/zero emission wave energy source as the supply, we are very confident that this will open up many opportunities” he added.

    A single unit of this type would be able to produce approximately 3 million litres of fresh water per day, and do so without generating any emissions. With the ability to cluster units offshore, the water needs of cities or industries can be met without having to use valuable sea shore real estate as in the case of land based desalination plants, whilst brine dispersal is much less of an issue at sea.  



It's portable
It's scaleable
zero emissions


Can we jump in stages from 3 million to 500 million litres per day?
We can with clusters.


Is it within the window of opportunity?
Is it cheaper - yes I think so.


There's another bonus!
Not only can you unhook and float them to another site that requires water,
they can revert to a power station and supply electricity.


There's another bonus!
The concentrated saltwater discharge is out at sea where it's supposed to be.

Actually a little birdy told me,
 the chances they are already using the PX Pressure Exchanger is on the cards
- hence the ratio is 1 to 1 and there is no concentrated waste seawater.

Search for Sydney Water cont.

Premier Morris Iemma, Minister Frank Sartor, Senator Ian Campbell.
The commitment to time and expenditure burdens the availability of sustainability.

Sydney Water Desalination Kurnell
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