A carbon-saving wave energy device is being tested off the shores of the Orkney Islands and, if successful, could be used on coastlines around the world.
The ‘Oyster’ is a pioneering technology deployed beneath the surface of the sea that could save up to 500 tonnes of carbon each year. Unlike other wave power technology, Oyster uses hydraulic power to convert waves into energy.
The device is being trialled by Edinburgh-based company Aquamarine Power near the Orkneys this autumn.
Dr Ronan Doherty, Chief Technical Officer of Aquamarine Power, said: "The whole field of generating electricity from wave power is groundbreaking.
“But Oyster's technology is highly innovative because it relies on simplicity. Its offshore component - a highly reliable flap with minimal submerged moving parts - is the key to its success when operating in seas vulnerable to bad weather, where maintenance can be very difficult.
“There is no underwater generator, power electronics or gearbox underwater to go wrong. All the complex power generation equipment remains easily accessible onshore."
The silent-running device uses water instead of oil inside, and contains no toxic substances to minimise the environmental impact.
Once the device is produced commercially, it could supply gren energy solutions for countries worldwide. Dr Doherty explains: "Our computer modelling of coastlines suitable for this technology shows that Spain, Portugal, Ireland and the UK are ideal candidates in Europe. But globally there is huge scope in areas like the north west coast of the USA and oceans off South Africa, Australia and Chile. We estimate that the potential size of the market could be in excess of £50 billion."
Martin McAdam, Chief Executive Officer of Aquamarine Power, said: “Our Oyster wave energy device is at the forefront of global technical innovation and will harness the sea’s powerful energy in the most efficient and effective way. The seas around our shores are our most valuable asset and future generations will depend on finding suitable alternatives to oil and gas, which will ultimately run out.”
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