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Maentwrog Power Station
Maentwrog power station was built by the North Wales Power Company and supplied electricity to North Wales, Deeside and Cheshire. It exploits the water resources of the Snowdonia mountains, using water turbines to drive electricity alternators. The 24MW station has been owned by several organisations; since 2004 it has been owned by the Nuclear Decommissioning Authority. It generates an annual electricity output of 60.6GWh. History Maentwrog hydro-electric power station was first commissioned in October 1928 by the North Wales Power Company Limited. The company also owned Dolgarrog and Cwm Dyli power stations. The new station was financed by the issue of £1.7million of debenture stock in 1924. The architectural design of the power house was by Sir Alexander Gibb and Partners. To power the station a new reservoir was built at Trawsfynydd, formed by the construction of four dams. The main dam on the Afon Prysor was Britain's first large arch dam. The other three cut off dams were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Electricity Authority
The British Electricity Authority (BEA) was established as the central British electricity authority in 1948 under the nationalisation of Great Britain's electricity supply industry enacted by the Electricity Act 1947. The BEA was responsible for the generation, transmission and sale of electricity to area electricity boards, and the development and maintenance of an efficient, coordinated and economical system of electricity supply. History The authority took over the operations of over 600 small public supply power companies, municipal authority electricity departments and the Central Electricity Board to form the BEA, which comprised a central authority and 14 area boards. Its scope did not include control of the North of Scotland Hydro-Electric Board, which had been founded in 1943 and remained independent of the BEA. The appointment of chairmen and members of the BEA and the area boards were made in August 1947 and the BEA was formally established on 15 August 1947. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afon Prysor
The River Dwyryd ( cy, Afon Dwyryd, meaning a river of two fords) is a river in Gwynedd, Wales which flows principally westwards; draining to the sea into Tremadog Bay, south of Porthmadog. Geography The Dwyryd rises in the hills to the north of Ffestiniog. At its most northern extent, water draining from Moelwyn Mawr drains into the Tanygrisiau Reservoir, the outflow of which forms the source of the Afon Goedol. This is joined by the River Bowydd at grid reference: . Below Rhyd y Sarn, the river is joined by the Afon Cynfal which flows from the east down a deep wooded gorge which includes the spectacular Rhaeadr Cynfal (Cynfal waterfall) south of Ffestiniog. The main river then flows through a wide valley formed by glaciation, with a broad flat base formed from glacial moraines and riverine gravel deposits. The valley, the Vale of Ffestiniog, has much agriculture but is subject to routine winter flooding. The Afon Tafarn-helyg has its confluence about further downstream. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In Wales
This is a list of electricity-generating power stations in Wales, sorted by type and name, with installed capacity (May 2007). Note that the DBERR maintains a comprehensive list of operational UK power stations her Biomass Biomass power stations: Nuclear power stations Nuclear power stations Coal-fired Coal-fired power stations: Gas-fired (or combined gas/coal) Gas (or combined gas/coal) fired power stations: Hydro-electric Hydro-electric power stations: Oil-fired Oil-fired power stations: Wind power Wind power generating facilities: See also * List of power stations in England * List of power stations in Northern Ireland * List of power stations in Scotland References Citations Energy statistics: electricityTable of Potential New Conventional Electricity Generating Plants in Great Britain November 2007BBC - List of Powerstations in the UKpx group - operations management, engineering services, energy tradingRenewable UK - Operational Windfarms {{Energy in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Step Up Transformer
A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signal-processing circuits. Since the invention of the first constant-potential transformer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Electric
Nuclear Electric was a nuclear power generation company in the United Kingdom. It was formed in 1990 as part of the privatisation process of the UK Electricity Supply Industry. In 1996, it was amalgamated into a new company – British Energy, which was eventually purchased by EDF Energy in 2010. History Background (Before 1990) Before 1990, the generation and transmission activities in England and Wales were under the responsibility of Central Electricity Generating Board (CEGB). The present electricity market in the UK was built upon the break-up of the CEGB into four separate companies in the 1990s. Its generation (or upstream) activities were transferred to three generating companies – ' PowerGen', 'National Power', and 'Nuclear Electric' (later 'British Energy', eventually 'EDF Energy'); and its transmission (or downstream) activities to – the National Grid Company. Nuclear Electric (1990–1995) When the CEGB split up was announced, its power stations were decided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trawsfynydd Nuclear Power Station
Trawsfynydd nuclear power station ( cy, Atomfa Trawsfynydd) is a decommissioned Magnox nuclear power station situated in Snowdonia National Park in Gwynedd, Wales. The plant, which became operational in 1965, was the only nuclear power station in the UK to be built inland, with cooling water that was taken from the man-made Llyn Trawsfynydd reservoir which also supplies the hydro-electric Maentwrog power station. It was closed in 1991. Its planned decommissioning by Magnox Ltd was expected to take almost 100years, but in 2021 the Welsh government arranged for the power station to be redeveloped using small-scale reactors. History The power station, which takes its name from the nearby village of Trawsfynydd, was designed by Basil Spence. The construction, which was undertaken by a consortium involving Crompton Parkinson, International Combustion, Fairey Engineering and Richardsons Westgarth, and known as the Atomic Power Constructions (APC), began in July 1959, and both of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runcorn
Runcorn is an industrial town and cargo port in the Borough of Halton in Cheshire, England. Its population in 2011 was 61,789. The town is in the southeast of the Liverpool City Region, with Liverpool to the northwest across the River Mersey. Runcorn is on the southern bank of the River Mersey, where the estuary narrows to form the Runcorn Gap. Runcorn was founded by Ethelfleda in 915 AD as a fortification to guard against Viking invasion at a narrowing of the River Mersey. Under Norman rule, Runcorn fell under the Barony of Halton and an Augustinian abbey was established here in 1115. It remained a small, isolated settlement until the Industrial Revolution when the extension of the Bridgewater Canal to Runcorn in 1776 established it as a port which would link Liverpool with inland Manchester and Staffordshire. and The docks enabled the growth of industry, initially shipwrights and sandstone quarries. In the late 18th and early 19th centuries, it was a spa and health resort b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pwllheli
Pwllheli () is a market town and community of the Llŷn Peninsula ( cy, Penrhyn Llŷn) in Gwynedd, north-western Wales. It had a population of 4,076 in 2011 of whom a large proportion, 81%, are Welsh language, Welsh speaking. Pwllheli is the place where Plaid Cymru was founded. It is the birthplace of the Welsh poet Albert Evans-Jones, Sir Albert Evans-Jones (bardic name ''Cynan''). Pwllheli has a range of shops and other services. As a local railhead with a market every Wednesday, the town is a gathering point for the population of the whole peninsula. Etymology The town's name means ''salt water basin''. History The town was given its charter as a borough by Edward, the Black Prince, in 1355, and a market is still held each Wednesday in the centre of the town on 'Y Maes' (="the field" or "the town square" in English). The town grew around the shipbuilding and fishing industries, and the granite quarry at Carreg yr Imbill, Gimlet Rock ( cy, Carreg yr Imbill). The populatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Dam
An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, causing the arch to straighten slightly and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas. Classification In general, arch dams are classified based on the ratio of the base thickness to the structural height (b/h) as: * Thin, for b/h less than 0.2, * Medium-thick, for b/h between 0.2 and 0.3, and * Thick, for b/h ratio over 0.3. Arch dams classified with respect to their structural height are: * Low dams up to , * Medium high dams between , * High dams over . History The developme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trawsfynydd
Trawsfynydd (; Welsh for "across hemountain") is a linear village in Gwynedd, Wales, near Llyn Trawsfynydd reservoir, and adjacent to the A470 north of Bronaber and Dolgellau and 10 km (6 miles) south of Blaenau Ffestiniog. The total community area is 12,010 hectares (46.4 square miles) with a population of only 973. The area is sparsely populated with each hectare (acre) inhabited by an average 0.07 (0.03) persons. The village is typical of many Welsh villages. There is one grocery shop, one public house, a newsagent, a chemist, garage, petrol service station, and a branch of a large agricultural merchants. The community includes Bronaber. History Prehistoric people lived in the area in scattered groups of circular huts near the river, Afon Crawcwellt, about two miles south of today's village. A substantial Romano-British fort and settlement was established at Tomen y Mur in the first century CE. The area continued to be inhabited during sub Roman Britain. An example ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Electricity Authority
The Central Electricity Authority (CEA) was a body that managed and operated the electricity supply industry in England and Wales between 1 April 1955 and 31 December 1957. The CEA replaced the earlier British Electricity Authority (BEA) as a result of the Electricity Reorganisation (Scotland) Act 1954, which moved responsibility for Scottish electricity supply to the Scottish Office. Structure The structure of the management board and the personnel in post remained the same as the BEA with the exception of the removal of representation by the chairman of the North of Scotland Hydro-Electric Board. There was a reduction from 14 to 12 of the number of area electricity boards – the South East Scotland Electricity Board and South West Scotland Electricity Board were removed from the CEA's management. The functions of the remaining area boards were unchanged. Upon its establishment in April 1955 the chairman of the CEA was Lord Citrine; the two deputy chairmen were Sir Henry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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