Wave energy and water production

Wave energy and water production

Carnegie was the first wave energy company to generate both power and freshwater onshore as part of its Perth Wave Energy Project at Garden Island in Western Australia.

Carnegie is an ASX-listed company based in Perth, Western Australia. Carnegie is developing its 100% owned CETO wave energy technology. The CETO technology has been under development for over 10 years at the company’s corporate office and their unique Wave Energy Research Facility at Fremantle.

Named after a Greek sea goddess, CETO offers the potential to revolutionise power and water production globally. CETO harnesses the enormous renewable energy present in our ocean’s waves and converts it into two of the most valuable commodities underpinning the sustainable growth of the planet; zero-emission electricity and zero-emission desalinated water.

The CETO system is different from other wave energy devices as it operates under water where it is safer from large storms and invisible from the shore. The fully submerged buoys drive pumps and generators that are contained offshore, within the buoy itself, with power delivered back to shore through subsea cables to power desalination plants as well as for export into the grid.

CETO differs from other wave technologies under development globally by being fully submerged and generating power onshore rather than offshore. CETO has been proven at pilot scale and is now in its commercial demonstration phase.

This information comes from the website of Carnegie Wave Energy.

The Wavestar machine

The Wavestar machine

The Wavestar machine draws energy from wave power with floats that rise and fall with the up and down motion of waves. The floats are attached by arms to a platform that stands on legs secured to the sea floor. The motion of the floats is transferred via hydraulics into the rotation of a generator, producing electricity.

Waves run the length of the machine, lifting 20 floats in turn. Powering the motor and generator in this way enables continuous energy production and a smooth output. This is a radical new standard and a unique concept in wave energy; it’s one of the few ways to convert fluctuating wave power into the high-speed rotation necessary to generate electricity.

Environmental and climate issues, as well as uncertainty about energy supply, demand that we diversify our energy supply to multiple renewable and clean sources. With enough space for wave energy machines but little exploitation thus far, Wavestar is not just developing a wave power device, but energizing a whole movement.

Energy production with wave energy is more predictable than wind because waves come and go slowly and can be forecast 24 hours ahead. The Wavestar machine could also be installed together with a wind turbine which would further increase efficiency and reduce set-up costs. Wavestar understand that we need many renewable energy solutions, not just one, so it makes sense to harness the power of waves.

This information comes from the website of Wavestar.