![]() ![]() Similar to dams or barriers, the barrage is constructed to hold a large body of water. Tidal barrage makes use of tidal range technologies. Tidal range technologies make use of the potential energy in the difference in height between high and low tides. ![]() Tidal energy technology can be classified into three types: tidal range, tidal current, and hybrid forms technologies. The global potential for tidal energy is huge, estimated to be around 500 gigawatts in 2020, equivalent to about one-fourth of the world’s coal capacity at that time. This energy is renewable, derived from natural sources that are replenished at a higher rate than consumed, creating far less greenhouse gas emissions than burning fossil fuels. The potential or kinetic energy of tide movement is captured and converted into electricity. Tidal energy is a form of power produced by the natural rise and fall of tides caused by the gravitational interaction between Earth, the sun, and the moon. What Is Tidal Energy And How Does it Work? In this article, we examine what tidal energy is, its advantages and disadvantages as well as the future trends of this still unpopular but highly promising renewable energy source. Moreover, its high predictability and elevated power output are also among the advantages of tidal energy. Tidal energy is a growing renewable, clean, and environmentally friendly energy source that produces far fewer greenhouse gases than fossil fuels such as coal and oil. The gates are opened and the water rushing into the sea drives the turbine to generate power when a head of 1.6m or more is created between the head pond and sea side with the falling of the is powered by over 150 contributing writers The gates are closed as the incoming tides create a head pond in the lower reaches of the Annapolis River upstream of the causeway. The power plant comprises of a single four blade turbine and sluice gates. The plant utilises a causeway built in the early 1960s, which was originally designed to serve as a transportation link as well as a water control structure to prevent flooding. The plant, operated by Nova Scotia Power, came online in 1984 after four years of construction. It generates 50GWh of electricity annually to power over 4,000 homes. The Annapolis tidal power generating station located in the Annapolis Basin, a sub-basin of the Bay of Fundy in Canada, has an installed capacity of 20MW making it the world’s third biggest operating tidal power plant. The first 1MW prototype of the 22.5m tall AR1000 tidal turbine with 18m rotor diameter was deployed at the European Marine Energy Centre in 2011.Īnnapolis Royal Generating Station, Canada – 20MW Construction is expected to start for a demonstration array involving up to six AR1000 single-rotor tidal turbines in 2014 with final commissioning expected in 2015. Atlantis Resources acquired full ownership of the tidal array project in December 2013. The MyGen project was initiated in 2006 by the Scottish company MeyGen, a joint venture between the tidal technology company Atlantis Resources and Morgan Stanley. The second phase development of the project is expected to raise the total installed capacity to 398MW by 2020. The tidal array project received offshore planning consent for its 86MW first phase development from the Scottish Government towards the end of 2013. MeyGen Tidal Energy Project located in the Inner Sound of the Pentland Firth off the north coast of Caithness, Scotland, is currently the world’s biggest underwater tidal turbine power project under development. MeyGen Tidal Energy Project, Scotland – 86MW The tidal lagoon, with an estimated annual power generation capacity 400GWh, will power over 120,000 homes for 120 years. The ground breaking for the tidal power project is scheduled for 2015 while full commissioning is expected in 2018. The plant will use reversible bulb turbines to generate power as water passes in and out of the lagoon with the rise and fall of tides. ![]() The plant will be located at a site with average tidal range of 8.5m and will involve the construction of a 9.5km-long sea wall or breakwater facility to create a lagoon cordoning off 11.5km 2 of sea. ![]() The planning application for the £850m ($1.4bn) project was approved in March 2013. The 240MW Swansea Bay Tidal Lagoon project, to be built at Swansea Bay in the UK, is the world’s biggest tidal power project and will become the world’s third biggest tidal power project upon completion. Swansea Bay Tidal Lagoon, United Kingdom – 240MW ![]()
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