George Westinghouse Jr. was a prolific American inventor, engineer, and entrepreneurial industrialist based in Pittsburgh, Pennsylvania who is best known for his creation of the railway air brake and for being a pioneer in the development and use of alternating current (AC) electrical power distribution. During his lifetime, he received 362 patents for his inventions and established 61 companies, many still in existence today.
The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems developed in the late 1870s and early 1880s; arc lamp street lighting running on high-voltage alternating current (AC), and large-scale low-voltage direct current (DC) indoor incandescent lighting being marketed by Thomas Edison's company. In 1886, the Edison system was faced with new competition: an alternating current system initially introduced by George Westinghouse's company that used transformers to step down from a high voltage so AC could be used for indoor lighting. Using high voltage allowed an AC system to transmit power over longer distances from more efficient large central generating stations. As the use of AC spread rapidly with other companies deploying their own systems, the Edison Electric Light Company claimed in early 1888 that high voltages used in an alternating current system were hazardous, and that the design was inferior to, and infringed on the patents behind, their direct current system.
Power engineering, also called power systems engineering, is a subfield of electrical engineering that deals with the generation, transmission, distribution, and utilization of electric power, and the electrical apparatus connected to such systems. Although much of the field is concerned with the problems of three-phase AC power – the standard for large-scale power transmission and distribution across the modern world – a significant fraction of the field is concerned with the conversion between AC and DC power and the development of specialized power systems such as those used in aircraft or for electric railway networks. Power engineering draws the majority of its theoretical base from electrical engineering and mechanical engineering.
Pearl Street Station was Thomas Edison's first commercial power plant in the United States. It was located at 255–257 Pearl Street in the Financial District of Manhattan in New York City, just south of Fulton Street on a site measuring 50 by 100 feet. The station was built by the Edison Illuminating Company, under the direction of Francis Upton, hired by Thomas Edison.
The Hartford Electric Light Company (HELCO) is a defunct electrical company that was located on Pearl Street in Hartford, Connecticut. HELCO merged with the Connecticut Power Company in 1958. These merged with the Connecticut Light and Power Company (CL&P) and the Western Massachusetts Electric Company (WMECO) in 1966 to form Northeast Utilities (NU). Its former corporate headquarters building and main facility are in the Ann Street Historic District.
The York Haven Dam is a low head, run-of-the river, dam and hydroelectric plant that is located on the Susquehanna River in the United States.
The Hearthstone Historic House Museum is a historic home in Appleton, Wisconsin, United States that has been converted into a museum. On September 30, 1882, it became the first residence in the US powered by a centrally located hydroelectric station using the Edison system. At that time, the house was the residence of Henry James Rogers, a paper company executive and entrepreneur. It was listed on the National Register of Historic Places on December 2, 1974. The house was previously known as the Henry J. Rogers House.
The Ames Hydroelectric Generating Plant, constructed in 1890 near Ophir, Colorado, was one of the first commercial system to produce and transmit alternating current (AC) electricity for industrial use and one of the first AC hydro-electric plants ever constructed. It became operational in 1891 and was built by Westinghouse Electric around two of their large alternators. One was set up in the valley as a generator and driven by water. It was connected by a 2.6-mile (4.2 km) transmission line to the second alternator used as a motor up at the Gold King Mine to drive the mining operation. The facility has been changed and upgraded over the years but is still in operation. It is now on the List of IEEE Milestones.
Adams Power Plant Transformer House in Niagara Falls, New York is a National Historic Landmarked building constructed in 1895. It is the only remaining structure that was part of the historic Edward Dean Adams Power Plant, the first large-scale, alternating current electric generating plant in the world, built in 1895. The building's eponym was Edward Dean Adams, a businessman and entrepreneur in the electrical field.
An electric power system is a network of electrical components deployed to supply, transfer, and use electric power. An example of a power system is the electrical grid that provides power to homes and industries within an extended area. The electrical grid can be broadly divided into the generators that supply the power, the transmission system that carries the power from the generating centers to the load centers, and the distribution system that feeds the power to nearby homes and industries.
John William Lieb was an American electrical engineer for the Edison Electric Light Company. Lieb was president of the American Institute of Electrical Engineers from 1904 to 1905. He received the IEEE Edison Medal for "the development and operation of electric central stations for illumination and power."
Electric power transmission, the tools and means of moving electricity far from where it is generated, date back to the late 19th century. They include the movement of electricity in bulk and the delivery of electricity to individual customers ("distribution"). In the beginning, the two terms were used interchangeably.
René Thury was a Swiss pioneer in electrical engineering. He was known for his work with high voltage direct current electricity transmission and was known in the professional world as the "King of DC."
Hydroelectricity is, as of 2019, the second-largest renewable source of energy in both generation and nominal capacity in the United States. In 2021, hydroelectric power produced 31.5% of the total renewable electricity, and 6.3% of the total U.S. electricity.
Holborn Viaduct power station, named the Edison Electric Light Station, was the world's first coal-fired power station generating electricity for public use. It was built at number 57 Holborn Viaduct in central London, by Thomas Edison's Edison Electric Light Company.
Mechanicville Hydroelectric Plant is a 18.3-acre (7.4 ha) national historic district located at Mechanicville in Saratoga County, New York. The listing included one contributing building and three contributing structures. The district dates to 1897 and includes notable Queen Anne architecture.
Oneida Street Station, also known as the East Wells Power Plant, was a power plant operated by The Milwaukee Electric Railway & Light Company. Constructed from 1898 to 1900, it was designed by architect Herman Esser in neoclassical revival style. The building is located in downtown Milwaukee, Wisconsin, at the Milwaukee River and Wells Street, which was once known as Oneida Street. The company began operating electric street cars in 1890. Their expanding network of streetcar and interurban railway lines were powered by several of their own power plants. As the company generated more power than they used, they sold the excess electricity, and, as Wisconsin Energy Corporation, eventually became the major supplier of power to eastern Wisconsin. The American Society of Mechanical Engineers (ASME) describes the plant as the "first central power station in the United States to be equipped and successfully operated with pulverized coal."
St. Anthony Falls in Minneapolis, Minnesota, is the only natural falls on the Mississippi River. Since almost the beginning of settlement in the area by European descendants, the St. Anthony Falls have been used for waterpower. The first allowed settlers were at Ft. Snelling, where construction began in 1820. A sawmill was operating 1821 and a flour mill in 1823. As soon as the land at the sides of the falls became available it was purchased with the intent of using the waterpower of the falls. First lumber mills covered the falls, cutting lumber floated down the Mississippi. After 1870 flour mills started to dominate the area. From 1880 to 1930 the area was the number one flour producer in the US. In later years, some of the power came from steam, but in 1923 half of the waterpower used was for flour milling. Other industries have also used the waterpower.
The Excelsior Power Company Building is a residential building at 33–43 Gold Street in the Financial District of Manhattan in New York City. It was designed in the Romanesque Revival style by William C. Gunnell and built by Robert L. Darragh. Completed in 1889, it is Manhattan's oldest known remaining building erected specifically for commercial power generation.
