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Wave & Tide

Wave and tide energy

Wave Power Setback

Written by , on March 18, 2009

 Last July, a Pelamis wave power generator was towed into the Atlantic about 5 kilometres off the coast of Aguçadoura in northern Portugal. In September, two more Pelamis uints were added. Each Pelamis unit was capable of generating about 750 megawatts of electricity – making this the world’s first commercial wave power project. The project […]  Read more »

Google Patents Wave-powered Data Centre

Written by , on January 13, 2009

Google has filed a patent for a wave-powered data centre. The data centre would also use sea water for cooling. There are currently an estimated 44 million servers in use worldwide. These use about 0.5% of the world’s electricity – about the same amount as Argentina or the Netherlands. Google’s patent envisages using existing technology, […]  Read more »

First Commercial Tidal Energy System on Full Power

Written by , on December 19, 2008

A tidal turbine near the mouth of Strangford Lough in Northern Ireland has begun producing electricity at full capacity for the first time. The SeaGen system is generating 1.2MW, the highest level of power produced by a tidal system anywhere in the world, and is claimed to be the first truly commercial ocean tidal system […]  Read more »

Swedish Wave Power Trials

Written by , on December 10, 2008

For his doctoral project at Uppsala University, Rafael Waters, has designed and built a wave power facility on the bottom of the sea, two kilometers off the west coast of Sweden, near Lysekil. Electricity is produced using a linear generator that works with the slow movements of the waves. A conventional generator transforms rotational energy […]  Read more »

“Baseload” Power from Waves

Written by , on November 28, 2008

A British engineer, Alvin Smith, has developed a simple system, called Searaser, which uses ocean wave energy to produce electricity on demand – including so-called baseload power  – even at times when the sea is calm. The system is based on a two-part pump. The bottom part of the pump is anchored to the ocean […]  Read more »

Energy from Ocean Currents

Written by , on November 22, 2008

It has been estimated that their is sufficient energy in the world’s ocean currents to meet 3,000 times the current power needs of the the entire world’s population. The difficulty is in harnessing that energy. Turbines and watermills need water flowing at 5 to 6 knots to operate effectively. But most of the ocean currents […]  Read more »

Energy from the Deep Ocean

Written by , on October 11, 2008

The US Department of Energy has awarded Lockheed Martin a contract to construct a thermal piping system to capture the ocean’s absorbed solar heat. The energy produced could be used to generate electricity or to fuel desalination, and according to the company, the process would be harmless to the ocean’s environment. Lockheed Martin plans to […]  Read more »

World’s First Commercial Wave Energy Farm

Written by , on September 26, 2008

 What is claimed to be the world’s first commercial wave power project opened off the coast of Portugal this week. The €9 million ($16 million) Aguçadoura project is the first of a series experimental wave energy projects by the Ondas de Portugal consortium. The main partners in the consortium are Australia’s Babcock and Brown, with […]  Read more »

More Efficient Tidal Turbine Design

Written by , on September 6, 2008

A team of engineers from Oxford University has come up with a new design for underwater tidal turbines which they believe will be more robust, more efficient and cheaper to build and maintain than anything in operation today. The tidal turbines in operation today are like underwater windmills, with their blades turning at right angles […]  Read more »

Wave Power from Rubber Snake

Written by , on July 8, 2008

Retired physicist Francis Farley and Rod Rainey of Atkins Global have designed a wave power generation system consisting of flexible tube filled with seawater and sealed at both ends like a giant sausage. The structure, called an "Anaconda", streams out in the waves like a windsock pushed by the wind. When each wave passes, it […]  Read more »