Powercor Australia
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Powercor Australia
Powercor Australia is an Australian electricity distribution company that operates throughout western Victoria, and the western suburbs of Melbourne. The company owns and maintains power lines, substations and street lights and also manages the largest electricity distribution network in Victoria. Powercor is 51% owned by the Cheung Kong Holdings and 49% by Spark Infrastructure which also own Citipower, which maintains the city of Melbourne's CBD network, and SA Power Networks, which maintains the South Australian network. Network statistics As of September 2011: * Total line length: 84,026 km * Area covered: 150,000 km2 * Customers: 730,273 * Zone substations 70 * Zone substation transformers (66 kV to 22 kV): 137 * Distribution Ttransformers (22 kV to 240 V): 81,553 * Poles: 535,941 * 31,865 customers supplied via single-wire earth return Single-wire earth return (SWER) or single-wire ground return is a single-wire transmission line which supplies single-phase ...
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Infrastructure
Infrastructure is the set of facilities and systems that serve a country, city, or other area, and encompasses the services and facilities necessary for its economy, households and firms to function. Infrastructure is composed of public and private physical structures such as roads, railways, bridges, tunnels, water supply, sewerage, sewers, electrical grids, and telecommunications (including Internet access, Internet connectivity and Broadband, broadband access). In general, infrastructure has been defined as "the physical components of interrelated systems providing Commodity, commodities and services essential to enable, sustain, or enhance societal quality of life, living conditions" and maintain the surrounding environment. Especially in light of the massive societal transformations needed to Climate change mitigation, mitigate and Climate change adaptation, adapt to climate change, contemporary infrastructure conversations frequently focus on sustainable development and gre ...
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Victoria (Australia)
Victoria is a state in southeastern Australia. It is the second-smallest state with a land area of , the second most populated state (after New South Wales) with a population of over 6.5 million, and the most densely populated state in Australia (28 per km2). Victoria is bordered by New South Wales to the north and South Australia to the west, and is bounded by the Bass Strait to the south (with the exception of a small land border with Tasmania located along Boundary Islet), the Great Australian Bight portion of the Southern Ocean to the southwest, and the Tasman Sea (a marginal sea of the South Pacific Ocean) to the southeast. The state encompasses a range of climates and geographical features from its temperate coastal and central regions to the Victorian Alps in the northeast and the semi-arid north-west. The majority of the Victorian population is concentrated in the central-south area surrounding Port Phillip Bay, and in particular within the metropolit ...
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Melbourne
Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a metropolitan area known as Greater Melbourne, comprising an urban agglomeration of 31 local municipalities, although the name is also used specifically for the local municipality of City of Melbourne based around its central business area. The metropolis occupies much of the northern and eastern coastlines of Port Phillip Bay and spreads into the Mornington Peninsula, part of West Gippsland, as well as the hinterlands towards the Yarra Valley, the Dandenong and Macedon Ranges. It has a population over 5 million (19% of the population of Australia, as per 2021 census), mostly residing to the east side of the city centre, and its inhabitants are commonly referred to as "Melburnians". The area of Melbourne has been home to Aboriginal ...
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Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ...
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Cheung Kong Holdings
Cheung Kong (Holdings) Limited, is a multinational conglomerate, based in Hong Kong. It was one of Hong Kong's leading multi-national conglomerates. The company merged with its subsidiary Hutchison Whampoa on 3 June 2015, as part of a major reorganisation, to become part of CK Hutchison Holdings. The Chairman of Cheung Kong Holdings was Li Ka Shing (李嘉誠), while his elder son, Victor Li (李澤鉅), was Managing Director and Deputy Chairman. Li Ka Shing founded Cheung Kong Industries in 1950s as a plastics manufacturer. Under his leadership, the company grew rapidly and eventually evolved into a property investment company. "Cheung Kong (Holdings) Limited" was established in 1971. The Cheung Kong Group is one of the largest developers of residential, office, retail, industrial and hotel properties in Hong Kong. With its long history of property development expertise and residential estates, Cheung Kong Holdings has built many of Hong Kong's most notable landmark buildi ...
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Spark Infrastructure
Spark Infrastructure Group is an Australian investment fund which owns and manages a portfolio of electricity infrastructure assets. Spark's principal investments are 49% stakes in both SA Power Networks and Victoria Power Networks; as well as a 15% stake in the NSW Power Networks consortium given the concession for TransGrid, the high-voltage transmission system for New South Wales. History The company debuted on the Australian Securities Exchange on 16 December 2005 with the stock symbol SKICA representing an instalment receipt with a final instalment due in March 2007 when the instalment receipts were transferred for SKI shares. In August 2021, a takeover bid from KKR, Ontario Teachers' Pension Plan and Public Sector Pension Investment Board was accepted by the board of directors A board of directors (commonly referred simply as the board) is an executive committee that jointly supervises the activities of an organization, which can be either a for-profit or a nonprof ...
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SA Power Networks
SA Power Networks is the sole electricity distributor in the state of South Australia, delivering electricity from high voltage transmission network connection points operated by ElectraNet. It is the successor to the Electricity Trust of South Australia. Ownership SA Power Networks arose from the split up of the generation, transmission, distribution and retail responsibilities of the former SA Government-owned Electricity Trust of South Australia and its subsequent privatisation in 1999. The distribution business is owned by the Hong Kong-based Cheung Kong Infrastructure Holdings (51%), and Spark Infrastructure (49%). SA Power Networks is structured as a partnership of CKI Utilities Development Limited, PAI Utilities Development Limited, each incorporated in the Bahamas; and Spark Infrastructure SA (No. 1) Pty Ltd, Spark Infrastructure SA (No. 2) Pty Ltd, and Spark Infrastructure SA (No. 3) Pty Ltd, each incorporated in Australia. Regulated electricity distribution SA Powe ...
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South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories by area, and second smallest state by population. It has a total of 1.8 million people. Its population is the second most highly centralised in Australia, after Western Australia, with more than 77 percent of South Australians living in the capital Adelaide, or its environs. Other population centres in the state are relatively small; Mount Gambier, the second-largest centre, has a population of 33,233. South Australia shares borders with all of the other mainland states, as well as the Northern Territory; it is bordered to the west by Western Australia, to the north by the Northern Territory, to the north-east by Queensland, to the east by New South Wales, to the south-east by Victoria, and to the south by the Great Australian Bight.M ...
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Single-wire Earth Return
Single-wire earth return (SWER) or single-wire ground return is a single-wire transmission line which supplies single-phase electric power from an electrical grid to remote areas at lowest cost. Its distinguishing feature is that the earth (or sometimes a body of water) is used as the return path for the current, to avoid the need for a second wire (or '' neutral wire'') to act as a return path. Single-wire earth return is principally used for rural electrification, but also finds use for larger isolated loads such as water pumps. It is also used for high-voltage direct current over submarine power cables. Electric single-phase railway traction, such as light rail, uses a very similar system. It uses resistors to earth to reduce hazards from rail voltages, but the primary return currents are through the rails. History Lloyd Mandeno, OBE (1888–1973) fully developed SWER in New Zealand around 1925 for rural electrification. Although he termed it "Earth Working Single ...
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