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Cruachan Power Station
The Cruachan Power Station (also known as the Cruachan Dam) is a pumped-storage hydroelectric power station in Argyll and Bute, Scotland. The scheme can provide 440 MW of power and produced 705 GWh in 2009. The turbine hall is located inside Ben Cruachan, and the scheme takes water between Cruachan Reservoir to Loch Awe, a height difference of . It is one of only four pumped storage power stations in the UK, and is capable of providing a black start capability to the National Grid. Construction began in 1959 to coincide with the Hunterston A nuclear power station in Ayrshire. Cruachan uses cheap off-peak electricity generated at night to pump water to the higher reservoir, which can then be released during the day to provide power as necessary. The power station is open to visitors, and around 50,000 tourists visit it each year. Location The power station is on the A85 road, about 8 km or 5 miles west of Dalmally, on a branch of Loch Awe leading to the River Awe, ...
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Argyll And Bute
Argyll and Bute ( sco, Argyll an Buit; gd, Earra-Ghàidheal agus Bòd, ) is one of 32 unitary authority council areas in Scotland and a lieutenancy area. The current lord-lieutenant for Argyll and Bute is Jane Margaret MacLeod (14 July 2020). The administrative centre for the council area is in Lochgilphead at Kilmory Castle, a 19th-century Gothic Revival building and estate. The current council leader is Robin Currie, a councillor for Kintyre and the Islands. Description Argyll and Bute covers the second-largest administrative area of any Scottish council. The council area adjoins those of Highland, Perth and Kinross, Stirling and West Dunbartonshire. Its border runs through Loch Lomond. The present council area was created in 1996, when it was carved out of the Strathclyde region, which was a two-tier local government region of 19 districts, created in 1975. Argyll and Bute merged the existing Argyll and Bute district and one ward of the Dumbarton district. The Dumbart ...
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BAM Nuttall
BAM Nuttall Limited (formerly known as Edmund Nuttall Limited) is a construction and civil engineering company headquartered in Camberley, United Kingdom. It has been involved in a portfolio of road, rail, nuclear, and other major projects worldwide. It is a subsidiary of the Dutch Royal BAM Group. History The company was founded by James Nuttall Snr in Manchester in 1865, to undertake engineering works associated with infrastructure developments, such as the Manchester Ship Canal, which opened in 1894 and the narrow gauge Lynton and Barnstaple Railway, which opened in 1898. In the 1900s and 1910s James Nuttall Snr's two sons— Sir Edmund Nuttall, 1st Baronet (1870–1923), who was made a baronet in 1922, and James Nuttall (1877–1957)—built the company into a nationwide business. In the 1920s and 1930s the company was run by Sir Edmund's son, Sir Keith Nuttall, 2nd Baronet (1901–1941), who served in the Royal Engineers in the Second World War. Other members of the family ...
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Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ...
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Ancillary Services (electric Power)
Ancillary services are the services necessary to support the transmission of electric power from generators to consumers given the obligations of control areas and transmission utilities within those control areas to maintain reliable operations of the interconnected transmission system. Ancillary services are specialty services and functions provided by actors within the electric grid that facilitate and support the continuous flow of electricity, so that the demand for electrical energy is met in real time. The term ancillary services is used to refer to a variety of operations beyond generation and transmission that are required to maintain grid stability and security. These services generally include active power control or frequency control and reactive power control or voltage control, on various timescales. Traditionally, ancillary services have been provided by large production units such as generators. With the integration of more intermittent generation and the developmen ...
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HighBeam
HighBeam Research was a paid search engine and full text online archive owned by Gale, a subsidiary of Cengage, for thousands of newspapers, magazines, academic journals, newswires, trade magazines, and encyclopedias in English. It was headquartered in Chicago, Illinois. In late 2018, the archive was shut down. History The company was established in August 2002 after Patrick Spain, who had just sold Hoover's, which he had co-founded, bought eLibrary and Encyclopedia.com from Tucows. The new company was called Alacritude, LLC (a combination of Alacrity and Attitude). ELibrary had a library of 1,200 newspaper, magazine and radio/TV transcript archives that were generally not freely available. Original investors included Prism Opportunity Fund of Chicago and 1 to 1 Ventures of Stamford, Connecticut. Spain stated, "There was a glaring gap between free search like Google and high-end offerings like LexisNexis and Factiva." Later in 2002, it bought Researchville.com. By 2003, it ...
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Remotely Operated Underwater Vehicle
A remotely operated underwater vehicle (technically ROUV or just ROV) is a tethered underwater mobile device, commonly called ''underwater robot''. Definition This meaning is different from remote control vehicles operating on land or in the air. ROVs are unoccupied, usually highly maneuverable, and operated by a crew either aboard a vessel/floating platform or on proximate land. They are common in deepwater industries such as offshore hydrocarbon extraction. They are linked to a host ship by a neutrally buoyant tether or, often when working in rough conditions or in deeper water, a load-carrying umbilical cable is used along with a tether management system (TMS). The TMS is either a garage-like device which contains the ROV during lowering through the splash zone or, on larger work-class ROVs, a separate assembly which sits on top of the ROV. The purpose of the TMS is to lengthen and shorten the tether so the effect of cable drag where there are underwater currents is minimize ...
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Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ...
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Drax Group
Drax Group PLC is a power generation business. The principal downstream enterprises are based in the UK and include Drax Power Limited, which runs a biomass and coal fueled power station, Drax power station, near Selby in North Yorkshire. The Group also runs an international biomass supply chain business. The company is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. In 2021, the company was taken out of the S&P Global Clean Energy Index, as it no longer is considered to be a "clean" energy company by the S&P. History In 1990, the electricity industry of England and Wales was privatised under the Electricity Act 1989. Three generating companies and 12 regional electricity companies were created. As a result of privatisation, Drax Power Station came under the ownership of National Power, one of the newly formed generating companies. Over the years that followed privatisation, the map of the industry changed dramatically. One significant change was ...
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Timeline Of The UK Electricity Supply Industry
This timeline outlines the key developments in the United Kingdom electricity industry from the start of electricity supplies in the 1870s to the present day. It identifies significant developments in technology for the generation, transmission and use of electricity; outlines developments in the structure of the industry including key organisations and facilities; and records the legislation and regulations that have governed the UK electricity industry.   The first part is a chronological table of significant events; the second part is a list of local acts of Parliament (1879–1948) illustrating the growth of electricity supplies. Significant events The following is a list of significant events in the history of the electricity sector in the United Kingdom. Local legislation timeline In addition to the Public General Acts on electricity supply given in the above table, there were also Local Acts. The Electric Lighting Acts 1882 to 1909 permitted local authorities and c ...
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Scottish Power
Scottish Power is a vertically integrated energy company based in Glasgow, Scotland. It is a subsidiary of Spanish utility firm Iberdrola. ScottishPower is the distribution network operator for Central and Southern Scotland, Merseyside, North Wales and parts of Cheshire and Shropshire. It is also the transmission owner for the south of Scotland. The company also supplies electricity and gas to homes and businesses around the United Kingdom and generates power for supply to the grid. It owned PPM Energy in the United States which has now been folded into Avangrid. Not to be confused with Scottish Power Company Limited (1909–48). History Foundation ScottishPower was formed in 1990, in preparation for the privatisation of the previously state-owned Scottish electricity industry the following year. Previously the UK government had privatised the English and Welsh electricity industry by splitting the market into 12 regional electricity companies (RECs) and two power gene ...
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South Of Scotland Electricity Board
The South of Scotland Electricity Board (SSEB) generated, transmitted and distributed electricity throughout the south of Scotland, including the former regions of Strathclyde, Lothian, Fife, Central, Borders and Dumfries and Galloway and a few towns in northern England. It operated from 1955 to 1991. History As established by the Electricity Act 1947 there were two British Electricity Authority divisions responsible for the generation of electricity in Scotland based in Glasgow and Edinburgh. There were also two area boards for distribution of electricity responsible to the British Electricity Authority and to the Minister of Fuel and Power. It was thought by the industry and government that a single board for the South of Scotland would be better placed to cover the whole area and would provide administrative advantages such as simplification. The South of Scotland would then be in line with the North of Scotland which was covered by the North of Scotland Hydro-Electric Boar ...
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North Of Scotland Hydro-Electric Board
The North of Scotland Hydro-Electric Board (1943–1990) was founded to design, construct and manage hydroelectricity projects in the Highlands of Scotland. It is regarded as one of the major achievements of Scottish politician Thomas Johnston, who chaired the board from 1945 to 1959. Background In the 1930s several schemes were proposed to develop hydro-electric power in the north of Scotland. These met with opposition by landowners, sporting interest and the coal mining industry on the grounds of competition. There was also opposition from official sources. Plans to build a power station at Kinlochleven for the benefit of the aluminium industry were shelved when Inverness County Council refused to allow water from the River Spey and River Laggan to cross the county border into Argyllshire. In 1938, the Caledonian Water Power bill was defeated in Parliament. This would have allowed a private company to build hydro-electric schemes in the Highlands, and its defeat was welcomed ...
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