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Solution by: Carnegie Wave Energy

Clean Energy from Subsurface Waves  The CETO technology is a large buoy that use subsurface wave energy to generate clean electricity and fresh water through desalination.

TE C LI M A IT F E BEN rgy C , e ne the IP C ntially ing to ld pote u o Accord c s n world ’s 2 e ocea of the y. fr om th a n 2 0% y toda th it c re a o m cap c ov e r e rati ng n e g y it e lec tr ic

SOCIAL The CETO technology offers remote islands a stable energy source, without negative visual or local wildlife impacts.

The buoys also deliver high-pressure saltwater to a reverse osmosis desalination plant, where it runs through a membrane that purifies the saltwater. The technology is well-suited for small islands that depend on imported, expensive diesel to generate power and freshwater. THE TRIPLE BOTTOM LINE

ENVIRONMENTAL A Carnegie Wave Energy project at Garden Island, located off Australia’s west coast, includes three CETO buoys and a desalination plant covering one-third of the islands freshwater needs.

This technology utilizes the constant movements of the oceans to drive a hydraulic pump that pushes seawater through a pipe to an onshore facility where hydroelectric turbines generate renewable electricity for the grid. The buoys driving the pump are fully submerged, leaving no visual impact and shielding the units from pounding waves.

WHY A SUSTAINIA100 SOLUTION? Remote islands are often heavily dependent on imported fossil fuels to generate fresh water and power.1 Carnegie’s CETO technology offers these isolated communities zero-emission electricity and directly desalinated freshwater, which reduces the need for fossil fuel-fired power stations and energy-intensive desalination plants.

The three CETO buoys located at Garden Island, off Australia’s west coast, are 11 meters in diameter and each have a capacity of 240 kW. They are seen here before submerged into the sea.

ECONOMIC According to Carnegie Wave Energy, CETO technology – even at smaller scales – is price-competitive with diesel fuel for power generation and desalination.






IEA. “Renewable Energies for Remote Area and Islands.” 2014. 2 IPCC Fifth Assessment Report. “Climate Change 2014: Mitigation to Climate Change.” 2014.




Sustainia100 2015