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Commonwealth Edison
Commonwealth Edison, commonly known by syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the primary electric provider in Chicago and much of Northern Illinois. Its service territory stretches roughly from Iroquois County on the south to the Wisconsin border on the north and from the Iowa border on the west to the Indiana border on the east. For more than 100 years, Commonwealth Edison has been the primary electric delivery services company for Northern Illinois. Today, ComEd is a unit of Chicago-based Exelon Corporation, one of the nation's largest electric and gas utility holding companies. ComEd provides electric service to more than 3.8 million customers across Northern Illinois. The company's revenues totaled more than $7 billion in 2023. , ComEd has interconnections with We Energies, ITC Midwest, Ameren, American Electric Power, Northern Indiana Public Service, and MidAmerican Energy (MEC). History Founding The earliest predecessor ...
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Subsidiary
A subsidiary, subsidiary company, or daughter company is a company (law), company completely or partially owned or controlled by another company, called the parent company or holding company, which has legal and financial control over the subsidiary company. Unlike regional branches or divisions, subsidiaries are considered to be distinct entities from their parent companies; they are required to follow the laws of where they are incorporated, and they maintain their own executive leadership. Two or more subsidiaries primarily controlled by same entity/group are considered to be sister companies of each other. Subsidiaries are a common feature of modern business, and most multinational corporations organize their operations via the creation and purchase of subsidiary companies. Examples of holding companies are Berkshire Hathaway, Jefferies Financial Group, The Walt Disney Company, Warner Bros. Discovery, and Citigroup, which have subsidiaries involved in many different Industry (e ...
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Robert Todd Lincoln
Robert Todd Lincoln (August 1, 1843 – July 26, 1926) was an American lawyer and businessman. The eldest son of President Abraham Lincoln and Mary Todd Lincoln, he was the only one of their four children to survive past the teenage years and also the only one to outlive both his parents. Robert Lincoln became a business lawyer and company president, and served as both United States Secretary of War (1881–1885) and the U.S. Ambassador to Great Britain (1889–1893). Lincoln was born in Springfield, Illinois, and graduated from Harvard College. He then served on the staff of General Ulysses S. Grant as a captain in the Union Army in the closing days of the American Civil War. After the war was over, he married Mary Eunice Harlan, and they had three children together. Following completion of his law school studies in Chicago, he built a successful law practice, and became wealthy representing corporate clients. Lincoln was often spoken of as a possible candidate for n ...
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Fisk Generating Station
The Fisk Generating Station, also known as Fisk Street Generating Station or Fisk Station is an inactive medium-size, coal-fired electric generating station located at 1111 West Cermak Road in the Pilsen neighborhood of Chicago, Illinois. It was sited near the south branch of the Chicago River to provide access to water for steam and barge traffic for coal, and closed down in 2012. History Origin Fisk Street Station went into service October 2, 1903. It was built by the predecessor to Commonwealth Edison, Chicago Edison Company, whose Chairman was Samuel Insull and Chief Engineer was Frederick Sargent. The older Harrison Street Station, built on the west bank of the Chicago River with reciprocating engines and condensing units capable of 16,200 kilowatts, was overloaded less than six years after the station went into service in 1894. Fisk's original Unit 1 was an 11,000 horsepower - 5000 kilowatt (or 5 million watt abbreviated 5 MW) steam turbo-generator built by the G ...
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Economy Of Scale
In microeconomics, economies of scale are the cost advantages that enterprises obtain due to their scale of operation, and are typically measured by the amount of output produced per unit of cost (production cost). A decrease in cost per unit of output enables an increase in scale that is, increased production with lowered cost. At the basis of economies of scale, there may be technical, statistical, organizational or related factors to the degree of market control. Economies of scale arise in a variety of organizational and business situations and at various levels, such as a production, plant or an entire enterprise. When average costs start falling as output increases, then economies of scale occur. Some economies of scale, such as capital cost of manufacturing facilities and friction loss of transportation and industrial equipment, have a physical or engineering basis. The economic concept dates back to Adam Smith and the idea of obtaining larger production returns thro ...
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Chicago River
The Chicago River is a system of rivers and canals with a combined length of that runs through the city of Chicago, including its center (the Chicago Loop). The river is one of the reasons for Chicago's geographic importance: the related Chicago Portage is a link between the Great Lakes and the Mississippi Valley, Mississippi River Basin, and ultimately the Gulf of Mexico. In 1887, the Illinois General Assembly decided to reverse the flow of the Chicago River through civil engineering by taking water from Lake Michigan and discharging it into the Mississippi River watershed, partly in response to concerns created by an extreme weather event in 1885 that threatened the city's water supply. In 1889, the state created the Chicago Sanitary District (now the Metropolitan Water Reclamation District of Greater Chicago, Metropolitan Water Reclamation District) to replace the Illinois and Michigan Canal with the Chicago Sanitary and Ship Canal, a much larger waterway, because the forme ...
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Samuel Insull
Samuel Insull (November 11, 1859 – July 16, 1938) was a British American business magnate. He was an innovator and investor based in Chicago who helped create an integrated electrical infrastructure in the United States. Insull created holding companies that purchased utilities and railroads. Insull was responsible for the building of the Chicago Civic Opera House in 1929. Due to the Great Depression, his vast Midwest holding company empire collapsed, and he was accused of profiting personally by selling worthless stock to unsuspecting investors who trusted him because of his position and reputation. Following a seven-week trial, he and 16 co-defendants were acquitted of all charges after two hours of jury deliberation. Early life Insull was born on November 11, 1859, in London, the son of Insull Insull, a tradesman and lay preacher who was active in the temperance movement, and Emma Short. He was one of five siblings who survived to adulthood. His younger brother, Martin, ...
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General Electric
General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston. Over the years, the company had multiple divisions, including GE Aerospace, aerospace, GE Power, energy, GE HealthCare, healthcare, lighting, locomotives, appliances, and GE Capital, finance. In 2020, GE ranked among the Fortune 500, ''Fortune'' 500 as the 33rd largest firm in the United States by gross revenue. In 2023, the company was ranked 64th in the Forbes Global 2000, ''Forbes'' Global 2000. In 2011, GE ranked among the Fortune 20 as the 14th most profitable company, but later very severely underperformed the market (by about 75%) as its profitability collapsed. Two employees of GE—Irving Langmuir (1932) and Ivar Giaever (1973)—have been awarded the Nobel Prize. From 1986 until 2013, GE was the owner of the NBC television network through its ...
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New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with a respective county. The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics, and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy. With an estimated population in 2024 of 8,478,072 distributed over , the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the nation's second-most populous city.
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Columbian Exposition
The World's Columbian Exposition, also known as the Chicago World's Fair, was a world's fair held in Chicago from May 5 to October 31, 1893, to celebrate the 400th anniversary of Christopher Columbus's arrival in the New World in 1492. The centerpiece of the Fair, held in Jackson Park, was a large water pool representing the voyage that Columbus took to the New World. Chicago won the right to host the fair over several competing cities, including New York City, Washington, D.C., and St. Louis. The exposition was an influential social and cultural event and had a profound effect on American architecture, the arts, American industrial optimism, and Chicago's image. The layout of the Chicago Columbian Exposition was predominantly designed by John Wellborn Root, Daniel Burnham, Frederick Law Olmsted, and Charles B. Atwood. It was the prototype of what Burnham and his colleagues thought a city should be. It was designed to follow Beaux-Arts principles of design, namely neoclassi ...
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Kilowatt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Work (physics), energy transfer. The watt is named in honor of James Watt (1736–1819), an 18th-century Scottish people, Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own Watt steam engine, steam engine in 1776, which became fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one meter per second against a constant opposing force of one Newton (unit), newton, the rate at which Work (physics), work is done is one watt. \mathrm. In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the vo ...
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Direct Current
Direct current (DC) is one-directional electric current, flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor (material), conductor such as a wire, but can also flow through semiconductors, electrical insulation, insulators, or even through a vacuum as in electron beam, electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A archaism, term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''Electric current, current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains Electronics, electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alt ...
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Michigan Avenue (Chicago)
Michigan Avenue is a north-south street in Chicago that runs at 100 east on the Roads and freeways in Chicago#Grid, Chicago grid. The northern end of the street is at DuSable Lake Shore Drive on the shore of Lake Michigan in the Gold Coast Historic District (Chicago), Gold Coast Historic District. The street's southern terminus is at Illinois Route 83, Sibley Boulevard in the southern suburb of Dolton, Illinois, Dolton, but like many other Chicago streets, it exists in several disjointed segments. As the home of the Chicago Water Tower, the Art Institute of Chicago, Millennium Park, and the shopping on the Magnificent Mile, it is a street well-known to Chicago natives as well as Tourism in Chicago, tourists to the city. Michigan Avenue also is the main commercial street of Streeterville. It includes all of the Historic Michigan Boulevard District and most of the Michigan–Wacker Historic District, including the scenic urban space anchored by the DuSable Bridge, DuSable (Michi ...
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