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Aotearoa Wave And Tidal Energy Association
The Aotearoa Wave and Tidal Energy Association (AWATEA) is a New Zealand organisation established in 2006 to promote renewable energy from marine sources. This includes energy from tides, waves and ocean currents. Organisations involved in New Zealand include Genesis Energy, Meridian Energy and Crest Energy. Several projects are being developed, including Kaipara Tidal Power Station and another in Cook Strait. Speaking at the 2007 conference, Jeanette Fitzsimons, then NZ Government spokesperson for Energy Efficiency stated that: "I remain very positive, and excited, at the prospects for marine energy in NZ. It is a perfect fit with our history as a maritime nation; the NZ love of the sea and sea going craft; the goals of the NZ Energy Strategy to get as close to 100% renewable electricity as we can; and to the Prime Minister’s aspirational goal to be carbon neutral and truly sustainable." See also * Ocean power in New Zealand *Electricity sector in New Zealand The electr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the List of island countries, sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's Capital of New Zealand, capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renewable Energy
Renewable energy is energy that is collected from renewable resources that are naturally replenished on a Orders of magnitude (time), human timescale. It includes sources such as Solar power, sunlight, wind power, wind, the movement of Hydropower, water, and geothermal energy, geothermal heat. Although most renewable energy sources are sustainable energy, sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation of natural resources, exploitation. Renewable energy often provides energy for electricity generation to a grid, space heating, air and water heating/air conditioning, cooling, and stand-alone power systems. Renewable energy technology projects are typically large-scale, but they are also suited to rural and remote areas and Renewable energy in developing countries, developing countries, where energy is often crucial in Human development (humanity), human development. Renewable energy is often deployed toge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tidal Power
Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods. Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun. Among sources of renewable energy, tidal energy has traditionally suffered from relatively high cost and limited availability of sites with sufficiently high tidal ranges or flow velocities, thus constricting its total availability. However, many recent technological developments and improvements, both in design (e.g. dynamic tidal power, tidal lagoons) and turbine technology (e.g. new axial turbines, cross flow turbines), indicate that the total availability of tidal power may be much higher than previously assumed and that economic and environmental costs may be brought down to competitive levels. Historically, tide mills have been used both in Europe and on the Atlantic coast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave Power
Wave power is the capture of energy of wind waves to do useful work – for example, electricity generation, water desalination, or pumping water. A machine that exploits wave power is a wave energy converter (WEC). Waves are generated by wind passing over the sea's surface. As long as the waves propagate slower than the wind speed just above, energy is transferred from the wind to the waves. Air pressure differences between the windward and leeward sides of a wave crest and surface friction from the wind cause shear stress and wave growth. Wave power is distinct from tidal power, which captures the energy of the current caused by the gravitational pull of the Sun and Moon. Other forces can create currents, including breaking waves, wind, the Coriolis effect, cabbeling, and temperature and salinity differences. As of 2022, wave power is not widely employed for commercial applications, after a long series of trial projects. Attempts to use this energy began in 1890 or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Current Power
Marine currents can carry large amounts of water, largely driven by the tides, which are a consequence of the gravitational effects of the planetary motion of the Earth, the Moon and the Sun. Augmented flow velocities can be found where the underwater topography in straits between islands and the mainland or in shallows around headlands plays a major role in enhancing the flow velocities, resulting in appreciable kinetic energy. The Sun acts as the primary driving force, causing winds and temperature differences. Because there are only small fluctuations in current speed and stream location with minimal changes in direction, ocean currents may be suitable locations for deploying energy extraction devices such as turbines. Other effects such as regional differences in temperature and salinity and the Coriolis effect due to the rotation of the earth are also major influences. The kinetic energy of marine currents can be converted in much the same way that a wind turbine extracts energ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genesis Energy Limited
Genesis Energy Limited, formerly Genesis Power Limited is a New Zealand publicly listed electricity generation and electricity, natural gas and LPG retailing company. It was formed as part of the 1998–99 reform of the New Zealand electricity sector, taking its generation capacity from the breakup of the Electricity Corporation of New Zealand (ECNZ) and taking retail customers from three local power boards in the Lower North Island. The New Zealand Government owns a 51% share of the company. Genesis Energy is the largest electricity and natural gas retailer in New Zealand with 26% and 39% market share respectively in the 2015–2016 financial year. In 2015, Genesis produced 14% of New Zealand's electricity, and is the third largest electricity generating company in New Zealand in terms of MW capacity, GWh generation and revenue (see comparison table at New Zealand electricity market). History Genesis Energy began business on 1 April 1999, after the reform of the N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meridian Energy
Meridian Energy Limited is a New Zealand electricity generator and retailer. The company generates the largest proportion of New Zealand's electricity, generating 35 percent of the country's electricity in the year ending December 2014, and is the fourth largest retailer, with 14 percent of market share in terms of customers as of December 2015. Meridian was one of three electricity companies formed from the break-up of the Electricity Corporation of New Zealand (ECNZ) in 1998–99, taking over the Waitaki River and the Manapouri hydro schemes. Originally a state-owned enterprise wholly owned by the New Zealand Government, the company was partially privatised in October 2013 by the Fifth National Government, with the government retaining a 51.02% shareholding. Today, Meridian operates seven hydroelectric power stations and one wind farm in the South Island of New Zealand, four wind farms in the North Island, and two wind farms in southern Australia – one in South Austr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaipara Tidal Power Station
The Kaipara tidal power station is a proposed tidal power project to be located in the Kaipara Harbour. The project is being developed by Crest Energy, with an ultimate size of 200MW at a cost of $600 million. Crest plans to place the turbines at least 30 metres deep along a ten kilometre stretch of the main channel. Historical charts show this stretch of the channel has changed little over 150 years. The output of the turbines will cycle twice daily with the predictable rise and fall of the tide. Each turbine will have a maximum output of 1.2 MW, and is expected to generate 0.75 MW averaged over time. In 2013, it was announced that the project had been put on hold, and most of the shares in Crest Energy had been sold to Todd Energy. Kaipara Harbour The entrance to Kaipara Harbour, one of the largest harbours in the world, is a channel to the Tasman Sea. It narrows to a width of , and is over deep in parts. On average, Kaipara tides rise and fall . At high tide, nearly 1000 squ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook Strait
Cook Strait ( mi, Te Moana-o-Raukawa) separates the North and South Islands of New Zealand. The strait connects the Tasman Sea on the northwest with the South Pacific Ocean on the southeast. It is wide at its narrowest point,McLintock, A H, Ed. (1966''Cook Strait''from An Encyclopaedia of New Zealand, updated 18-Sep-2007. Note: This is the distance between the North Island and Arapaoa Island; some sources give a slightly larger reading of around , that between the North Island and the South Island. and is considered one of the most dangerous and unpredictable waters in the world. Regular ferry services run across the strait between Picton in the Marlborough Sounds and Wellington. The strait is named after James Cook, the first European commander to sail through it, in 1770. In Māori it is named ''Te Moana-o-Raukawa'', which means ''The Sea of Raukawa''. Raukawa is a type of woody shrub native to New Zealand. History Approximately 18,000 years ago during the Last G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeanette Fitzsimons
Jeanette Mary Fitzsimons (née Gaston; 17 January 1945 – 5 March 2020) was a New Zealand politician and environmentalist. She was the co-leader of the Green Party of Aotearoa New Zealand from 1995 to 2009, and was a Member of Parliament from 1996 to 2010. Early life Born in Dunedin on 17 January 1945, Fitzsimons was the daughter of Doris Mary Gaston (née Harrison) and John Fisher Gaston. She was raised in nearby Mosgiel, and in Waiuku, near Auckland, and was educated at Waiuku District High School from 1957 to 1959, and then Epsom Girls' Grammar School in Auckland between 1960 and 1961. She studied French and music at the University of Auckland from 1962 to 1964, graduating with a Bachelor of Arts degree, and was considered a talented violinist. She also earned a Diploma of Education. After teaching at her old school, Epsom Girls' Grammar, in 1966 and 1967, Fitzsimons lived in Geneva, Switzerland, from 1968 to 1974, where she joined Friends of the Earth and the Environment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ocean Power In New Zealand
New Zealand has large ocean energy resources but does not yet generate any power from them. TVNZ reported in 2007 that over 20 wave and tidal power projects are currently under development. However, not a lot of public information is available about these projects. The Aotearoa Wave and Tidal Energy Association was established in 2006 to "promote the uptake of marine energy in New Zealand". According to their 10 February 2008 newsletter, they have 59 members. However, the association doesn't list its members. From 2008 to 2011, the government Energy Efficiency and Conservation Authority is allocating $2 million each year from a Marine Energy Deployment Fund, set up to encourage the utilisation of this resource. The greater Cook Strait and Kaipara Harbour seem to offer the most promising sites for using underwater turbines. Two resource consents have been granted for pilot projects in Cook Strait itself and in the Tory Channel, and consent is being sought for a project sites at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Sector In New Zealand
The electricity sector in New Zealand uses mainly renewable energy, such as hydropower, geothermal power and increasingly wind energy. , 82% of electricity is generated from renewable sources, making New Zealand one of the countries with the lowest carbon dioxide emissions from electricity generation. Electricity demand grew by an average of 2.1% per year from 1974 to 2010 but decreased by 1.2% from 2010 to 2013. The electricity market is regulated by the Electricity Authority. Electricity lines businesses, including Transpower and the distribution lines companies, are regulated by the Commerce Commission. Control is also exerted by the minister of energy in the New Zealand Cabinet, though the minister for state-owned enterprises and the minister for climate change also have some powers by virtue of their positions and policy influence in the government. History In New Zealand electricity was first generated within factories for internal use. The first generation plant wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
