A PATCH of sea the size of the Sydney Cricket Ground could generate enough power for 25,000 homes, say the backers of a technology that converts the motion of the ocean into electricity.

The system, known as Ceto, uses the energy from waves to harvest power - with zero greenhouse gases - and has been labelled as a potential "holy grail" of renewable energy by the Federal Minister for Industry, Ian Macfarlane.
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source: http://www.smh.com.au/news/environment/ … 97016.html

Hi keithy,

Also found nuclear plants require a LOT of water to operate. Yet another reason to not have them.

I'm not sure if the new proposed reactors will have the water wastage problem that you speak of, either.

I think it's still the same fundamental design from a thermodynamic perspective. You need to get rid of vast quantities of heat. A large body of water is the only effective (ie cheap) way to do that.

This looks promising. First raised by keithy - I think.  

Another good aussie invention sold overseas.  



Wave Energy & CETO background:
Named after the Greek ocean goddess, the CETO system distinguishes itself from other wave energy devices by resting out of sight on the ocean floor.
An array of submerged buoys is tethered to seabed pump units. The buoys move in harmony with the motion of the passing waves, driving the pumps which in turn pressurize seawater which is delivered ashore via a pipeline.
The high-pressure seawater can then be used to supply a reverse osmosis desalination plant, replacing greenhouse gas emitting pumps usually required for such plants.
The high-pressure seawater can also be used to drive hydro turbines, generating zero-emission electricity.

Other wave energy & CETO characteristics include:
�� Wave energy is a renewable, zero-emission source of power.
�� 60% of the world lives within 60km of a coast, minimizing transmission issues.
�� As water is about 800 times denser than air, the energy density of waves exceeds that of wind
many times over, dramatically increasing the amount of energy available for harvesting.
�� Waves are predictable days in advance, making it easy to match supply and demand. (Wind is
predictable hours in advance at best.)
�� 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 seawater by
magnifying the pressure variations in ocean waves.
�� Any combination of power and water can be achieved from 100% power through to 100% water.
�� CETO contains no oils, lubricants or offshore electrical components. CETO is built from
components with a known subsea life of over 30 years.
�� CETO units act like artificial reefs in the way they attract marine life.
Carnegie Corporation (CNM) is a clean energy technology developer currently involved in developing two
clean energy technologies: the CETO Wave Energy technology and its 100%-owned clean coal technology,
Cleaner Coal Power. Carnegie is focused on developing, commercializing and operating clean energy
technologies that will lead to revenue generating projects globally.


http://www.ceto.com.au/home.php - the amination here is good

mantra - it'ld certainly help a lot !!
has been a great disappointment to me for years I have seen Aussie inventions like this get no support here, and be sold overseas for a very low price.

This system can very the %age of fresh water produced or electricity produced.
During peak demand timens, set it to 100% electricity. At lower demand times, mainly water.

Systems like this, once up and running effectivelt cost nothing to keep going. Sort of like insulation in a roof in a house, or a water tank. It just sits there quietly producing for the owner.

An environmental party would cripple this nation quicker than you can blink.

Retards pandering to other retards that have no inkling about the power requirements that the population and industry require

This system can very the %age of fresh water produced or electricity produced. 
During peak demand timens, set it to 100% electricity. At lower demand times, mainly water.

So can any system. It is much more efficient to desalinise waste water than sea water.

Systems like this, once up and running effectivelt cost nothing to keep going. Sort of like insulation in a roof in a house, or a water tank. It just sits there quietly producing for the owner.

Anything built in the ocean requires heavier maintenance.

No probs IQSRLOW.
yes, as a  >14 year old  ( , thanks mate!) , I feel renewables are the only way to go.

Flow batteries (invented by the UNSW, held now by cougar energy) coupled with renewable power supplies looks perfect to an idealistic sprintcyclist.
Wind/solar power units are used successfully in remore areas. Wind and flow batteries used succesfully in Tassie.
Combinations of these and others in local areas would be perfect.