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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 24 MW 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. It was later extended under the terms of the North Wales Hydro-Electric Power Act 1952. 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 & Partners. To power the station a new reservoir was built at Trawsfynydd, formed by the construction of four dams. The main dam ... [...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 (), 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 Llyn Ystradau, the outflow of which forms the source of the Afon Goedol. This is joined by the River Bowydd at grid reference: . At Rhyd-y-Sarn, the Afon Goedol is joined by the Afon Teigl (originating from Manod Mawr). Thereafter, the river is called the Afon Dwyryd. Below Rhyd y Sarn by Pont Dolymoch, 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 ... [...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 Nuclear power stations Nuclear power plant, 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 Wales ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Step Up Transformer
In electrical engineering, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnox Electric
Nuclear Restoration Services (NRS) is a British nuclear decommissioning Site Licence Company (SLC) owned by the Nuclear Decommissioning Authority (NDA). It is responsible for the decommissioning of several first-generation nuclear power generation and research sites across the UK, and the operation of a hydro-electric plant. History NRS was created as part of re-structuring of the NDA Estate, which saw Dounreay join with Magnox Ltd in April 2023. In the future, NRS is expecting to assume control of decommissioning of seven Advanced Gas-cooled Reactor sites (AGRs), currently managed by EDF Energy. Magnox Electric plc Magnox Electric plc, which was created in 1996 to take ownership of the Magnox assets from Nuclear Electric and Scottish Nuclear. The remaining nuclear power stations of these two companies, seven advanced gas-cooled reactor (AGR) sites and one pressurised water reactor (PWR) site, were transferred to a separate company, British Energy, which was then priva ... [...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 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trawsfynydd Nuclear Power Station
Trawsfynydd nuclear power station () is a former 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 artificial Llyn Trawsfynydd reservoir which also supplies the hydro-electric Maentwrog power station. It was closed in 1991. Its ongoing decommissioning by Nuclear Restoration Services 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 reactors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runcorn
Runcorn is an industrial town and Runcorn Docks, cargo port in the Borough of Halton, Cheshire, England. Runcorn is on the south bank of the River Mersey, where the estuary narrows to form the Runcorn Gap. It is upstream from the port of Liverpool. The Runcorn built-up area had a population of 61,145 at the 2021 United Kingdom census, 2021 census. Runcorn was founded by Æthelflæd, Æthelflæd of Mercia 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 Halton (barony), Barony of Halton, and an Augustinians, Augustinian abbey was established there 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 of Runcorn, port that would link Liverpool with inland Manchester and Staffordshire. and The docks enabled the growth of industry, initially shipwrights and sandstone quarries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pwllheli
Pwllheli ( ; ) is a market town and community on the Llŷn Peninsula (), in Gwynedd, north-west Wales. It had a population of 4,076 in 2011, which declined slightly to 3,947 in 2021; a large proportion (81%) were 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 ). 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 peninsula's population. Etymology The town's name means 'salt-water pool'. History The town was given its charter as a borough by Edward, the Black Prince in 1355; 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 (). The population in 1841 was 2,367. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Wales And South Cheshire Joint Electricity Authority
The North Wales and South Cheshire Joint Electricity Authority supplied electricity to an extensive area of North Wales and parts of Cheshire and Shropshire. As constituted in 1923 the Joint Authority transferred all its rights to distribution of electricity in the area to the North Wales Power Company. The authority was effectively the power company. Both the joint authority and the power company were abolished in 1948 upon the nationalisation of the British electricity supply industry. Background The North Wales and South Cheshire Joint Electricity Authority was the first Joint Electricity Authority to be constituted, on 1st August 1923, under the provisions of the Electricity (Supply) Act 1919 (9 & 10 Geo. 5. c. 100), and the Electricity (Supply) Act 1922 (12 & 13 Geo. 5. c. 46). The JEA transferred some powers, rights and obligations to the North Wales Power Company, this included all rights of distribution of electricity in the area. From this time the JEA was effectively t ... [...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 development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
