Tidal Stream Turbine

ESRU has developed a new generation of marine turbine that could harness energy from the sea even in the very deepest of waters. The turbine's innovative design enables it to be placed in the depths of the sea where the current is strongest, allowing the device to reap the full benefits of the sea's natural resources.

Unlike conventional turbines, the ESRU machine has two rotors, turning in opposite directions, which make it stable and removes the need for expensive, fixed foundations. Instead, it can be connected to the sea bed by a cable that moves with the flow of the tide, much like a kite flying on a windy day. Conventional current turbines look a bit like under-water windmills - they have to rest on the sea bottom, which means it is difficult to secure them in deep water or where the current is at its strongest. This new technology removes the need for expensive piling and thereby makes marine renewable energy a much more commercially attractive option.

ESRU staff have successfully tested a prototype system comprising turbine, mooring and electrical generator with funding support from Scottish Enterprise's Proof of Concept scheme. The team are now looking for support from industry to create a larger, 8 metre version.

With ambitious government renewable energy targets in place, the need to develop advanced technologies to power homes and businesses has never been more apparent. Scotland's vast natural resources mean we are well-placed to develop and test cleaner and greener systems that can help tackle climate change, as well as increasing sustainable economic growth. This is an exciting time for the sector and ESRU are looking forward to developing the next phase of this technology.

Follow this link for further technical details on the ESRU turbine.