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124-749: Inspired by the Tennessee Valley Authority , the organisation was founded in 1964 as the River Niger Commission . On 21 November 1980, it was refounded as the Niger Basin Authority . The Niger Basin Authority defines its purpose as the promotion of cooperation among member countries to ensure integrated development of resources. The organisation originally defined its mission as the cooperative management of water resources, most notably, but not limited to,

248-484: A gigawatt each. They generate about a third of the world's electricity , but cause many illnesses and the most early deaths per unit of energy produced, mainly from air pollution . World installed capacity doubled from 2000 to 2023 and increased 2% in 2023. A coal-fired power station is a type of fossil fuel power station . The coal is usually pulverized and then burned in a pulverized coal-fired boiler . The furnace heat converts boiler water to steam , which

372-530: A library service was instituted for this area. The professional staff at headquarters were generally composed of experts from outside the region. By 1934, TVA employed more than 9,000 people. The workers were classified by the usual racial and gender lines of the region, which limited opportunities for minorities and women. TVA hired a few African Americans , generally restricted for janitorial or other low-level positions. TVA recognized labor unions ; its skilled and semi-skilled blue collar employees were unionized,

496-545: A magnet . Central power stations became economically practical with the development of alternating current (AC) power transmission, using power transformers to transmit power at high voltage and with low loss. Commercial electricity production started with the coupling of the dynamo to the hydraulic turbine. The mechanical production of electric power began the Second Industrial Revolution and made possible several inventions using electricity, with

620-504: A "hidden loss" by preventing the creation of "factories and jobs that would have come into existence if the government had allowed the taxpayers to spend their money as they wished". Defenders note that TVA remains overwhelmingly popular in Tennessee among conservatives and liberals alike. Business historian Thomas McCraw concludes that Roosevelt "rescued the [power] industry from its own abuses" but "he might have done this much with

744-405: A breakthrough in an area known for corporations hostile to miners' and textile workers' unions. Women were excluded from construction work. Many local landowners were suspicious of government agencies, but TVA successfully introduced new agricultural methods into traditional farming communities by blending in and finding local champions. Tennessee farmers often rejected advice from TVA officials, so

868-451: A generator are photovoltaic solar and fuel cells . Almost all commercial electrical power on Earth is generated with a turbine , driven by wind, water, steam or burning gas. The turbine drives a generator, thus transforming its mechanical energy into electrical energy by electromagnetic induction. There are many different methods of developing mechanical energy, including heat engines , hydro, wind and tidal power. Most electric generation

992-645: A generator to rotate. Electrochemistry is the direct transformation of chemical energy into electricity, as in a battery . Electrochemical electricity generation is important in portable and mobile applications. Currently, most electrochemical power comes from batteries. Primary cells , such as the common zinc–carbon batteries , act as power sources directly, but secondary cells (i.e. rechargeable batteries) are used for storage systems rather than primary generation systems. Open electrochemical systems, known as fuel cells , can be used to extract power either from natural fuels or from synthesized fuels. Osmotic power

1116-633: A great deal less agitation and ill will". New Dealers hoped to build numerous other federal utility corporations around the country but were defeated by lobbyist and 1940 Republican presidential nominee Wendell Willkie and the conservative coalition in Congress. The valley authority model did not replace the limited-purpose water programs of the Bureau of Reclamation and the Army Corps of Engineers . However, it has been shown that in river policy,

1240-408: A huge amount of power from a single unit. However, nuclear disasters have raised concerns over the safety of nuclear power, and the capital cost of nuclear plants is very high. Hydroelectric power plants are located in areas where the potential energy from falling water can be harnessed for moving turbines and the generation of power. It may not be an economically viable single source of production where

1364-542: A large number of consumers. Most power plants used in centralised generation are thermal power plants meaning that they use a fuel to heat steam to produce a pressurised gas which in turn spins a turbine and generates electricity. This is the traditional way of producing energy. This process relies on several forms of technology to produce widespread electricity, these being natural coal, gas and nuclear forms of thermal generation. More recently solar and wind have become large scale. A photovoltaic power station , also known as

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1488-653: A plan to meet the energy needs of the Tennessee Valley through 2020. In 1992 work resumed on Watts Bar Unit 1 , and the reactor began operation in May 1996. This was the last commercial nuclear reactor in the United States to begin operation in the 20th century. In 2002, TVA began work to restart Browns Ferry Unit 1 , the last of TVA's reactors that had been mothballed in 1985. This unit returned to service in 2007. In 2004, TVA implemented recommendations from

1612-536: A prime source of power within isolated villages. Total world generation in 2021 was 28,003 TWh, including coal (36%), gas (23%), hydro (15%), nuclear (10%), wind (6.6%), solar (3.7%), oil and other fossil fuels (3.1%), biomass (2.4%) and geothermal and other renewables (0.33%). China produced a third of the world's electricity in 2021, largely from coal. The United States produces half as much as China but uses far more natural gas and nuclear. Variations between countries generating electrical power affect concerns about

1736-422: A projected future increase in electrical consumption, TVA began constructing 500 kilovolt (kV) transmission lines, the first of which was placed into service on May 15, 1965. Electric rates were among the nation's lowest during this time and stayed low as TVA brought larger, more efficient generating units into service. Plants completed during this time included Paradise , Bull Run , and Nickajack Dam . Expecting

1860-841: A projection of further rapid increase in power demand. However, in the 1980s, it became increasingly evident that the agency had vastly overestimated the Valley's future energy needs, and rapid increases in construction costs and new regulations following the Three Mile Island accident posed additional obstacles to this undertaking. In 1981, the board voted to defer the Phipps Bend plant, as well as to slow down construction on all other projects. The Hartsville and Yellow Creek plants were cancelled in 1984 and Bellefonte in 1988. Citing safety concerns, all of TVAs five operating nuclear reactors were indefinitely shut down in 1985 with

1984-579: A proposal from industrialist Henry Ford to build a private dam and create a utility to modernize the Tennessee Valley. In 1930, Norris sponsored the Muscle Shoals Bill , which would have built a federal dam in the valley, but it was vetoed by President Herbert Hoover , who believed it to be socialistic . The idea behind the Muscle Shoals project became a core part of President Franklin D. Roosevelt 's New Deal program that created

2108-441: A scale of at least 1 MW p . As of 2018, the world's largest operating photovoltaic power stations surpassed 1 gigawatt . At the end of 2019, about 9,000 solar farms were larger than 4 MW AC (utility scale), with a combined capacity of over 220 GW AC . A wind farm or wind park, or wind power plant, is a group of wind turbines in the same location used to produce electricity . Wind farms vary in size from

2232-618: A small area of Algeria falls within the Niger Basin, it is not a member state of the NBA. It is based in Niamey and works in both French and English . Ministers representing the Authority's members meet in yearly sessions at the headquarters in Niamey, as well as locations in the member states. Additionally, the NBA heads of states and foreign contributors meet at a regular Conference of

2356-927: A small number of 115kV and 230kV lines in Alabama and Georgia that connect to Southern Company lines of the same voltage. TVA has conveyed approximately 485,420 acres (1,964.4 km ) of property for recreation and preservation purposes including public parks, public access areas and roadside parks, wildlife refuges, national parks and forests, and other camps and recreation areas, comprising approximately 759 different sites. Currently, TVA manages approximately 293,000 acres (1,190 km ) of Federally-owned land for public use. These lands are managed as either TVA Natural Areas or TVA Day-Use Recreation Areas. Natural Areas are smaller, ecologically or historically significant areas set aside for conservation, with some areas including hiking and walking trails. Day-Use Recreation Areas comprise approximately 80 different locations throughout

2480-481: A small number of turbines to several hundred wind turbines covering an extensive area. Wind farms can be either onshore or offshore . Many of the largest operational onshore wind farms are located in China, India, and the United States. For example, the largest wind farm in the world , Gansu Wind Farm in China had a capacity of over 6,000  MW by 2012, with a goal of 20,000 MW by 2020. As of December 2020,

2604-465: A solar park, solar farm, or solar power plant, is a large-scale grid-connected photovoltaic power system (PV system) designed for the supply of merchant power . They are different from most building-mounted and other decentralized solar power because they supply power at the utility level, rather than to a local user or users. Utility-scale solar is sometimes used to describe this type of project. This approach differs from concentrated solar power ,

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2728-542: Is a federally owned electric utility corporation in the United States . TVA's service area covers all of Tennessee , portions of Alabama , Mississippi , and Kentucky , and small areas of Georgia , North Carolina , and Virginia . While owned by the federal government , TVA receives no taxpayer funding and operates similarly to a private for-profit company. It is headquartered in Knoxville, Tennessee , and

2852-462: Is a possibility at places where salt and fresh water merge. The photovoltaic effect is the transformation of light into electrical energy, as in solar cells . Photovoltaic panels convert sunlight directly to DC electricity. Power inverters can then convert that to AC electricity if needed. Although sunlight is free and abundant, solar power electricity is still usually more expensive to produce than large-scale mechanically generated power due to

2976-468: Is based upon the local power requirement and the fluctuations in demand. All power grids have varying loads on them. The daily minimum is the base load , often supplied by plants which run continuously. Nuclear, coal, oil, gas and some hydro plants can supply base load. If well construction costs for natural gas are below $ 10 per MWh, generating electricity from natural gas is cheaper than generating power by burning coal. Nuclear power plants can produce

3100-612: Is carried out in power stations , also called "power plants". Electricity is most often generated at a power plant by electromechanical generators , primarily driven by heat engines fueled by combustion or nuclear fission , but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power . There are exotic and speculative methods to recover energy, such as proposed fusion reactor designs which aim to directly extract energy from intense magnetic fields generated by fast-moving charged particles generated by

3224-975: Is driven by heat engines. The combustion of fossil fuels supplies most of the energy to these engines, with a significant fraction from nuclear fission and some from renewable sources . The modern steam turbine , invented by Sir Charles Parsons in 1884, currently generates about 80% of the electric power in the world using a variety of heat sources. Turbine types include: Turbines can also use other heat-transfer liquids than steam. Supercritical carbon dioxide based cycles can provide higher conversion efficiency due to faster heat exchange, higher energy density and simpler power cycle infrastructure. Supercritical carbon dioxide blends , that are currently in development, can further increase efficiency by optimizing its critical pressure and temperature points. Although turbines are most common in commercial power generation, smaller generators can be powered by gasoline or diesel engines . These may used for backup generation or as

3348-511: Is fundamentally the opposite of distributed generation . Distributed generation is the small-scale generation of electricity to smaller groups of consumers. This can also include independently producing electricity by either solar or wind power. In recent years distributed generation as has seen a spark in popularity due to its propensity to use renewable energy generation methods such as rooftop solar . Centralised energy sources are large power plants that produce huge amounts of electricity to

3472-582: Is governed by a nine-member part-time board of directors, nominated by the president of the United States and confirmed by the Senate . A minimum of seven of the directors are required to be residents of TVA's service area. The members select the chair from their number, and serve five-year terms. They receive annual stipends of $ 45,000 ($ 50,000 for the chair). The board members choose the TVA's chief executive officer . When their terms expire, directors may remain on

3596-577: Is provided by batteries. Other forms of electricity generation used in niche applications include the triboelectric effect , the piezoelectric effect , the thermoelectric effect , and betavoltaics . Electric generators transform kinetic energy into electricity. This is the most used form for generating electricity based on Faraday's law . It can be seen experimentally by rotating a magnet within closed loops of conducting material, e.g. copper wire. Almost all commercial electrical generation uses electromagnetic induction, in which mechanical energy forces

3720-472: Is rated in megawatt-peak (MW p ), which refers to the solar array's theoretical maximum DC power output. In other countries, the manufacturer states the surface and the efficiency. However, Canada, Japan, Spain, and the United States often specify using the converted lower nominal power output in MW AC , a measure more directly comparable to other forms of power generation. Most solar parks are developed at

3844-507: Is staffed 24 hours a day to spot any threats to TVA's 16,000 miles of transmission lines. Given continued economic pressure on the coal industry, the TVA board defied President Donald Trump and voted in February 2019 to close two aging coal plants, Paradise Unit 3 and Bull Run. TVA chief executive Bill Johnson said the decision was not about coal, per se, but rather "about keeping rates as low as feasible". They stated that decommissioning

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3968-566: Is the fifth-largest river system in the United States, and assists governments and private companies on economic development projects. TVA's headquarters are located in Downtown Knoxville , with large administrative offices in Chattanooga (training/development; supplier relations; power generation and transmission) and Nashville (economic development) in Tennessee and Muscle Shoals, Alabama . TVA's headquarters were housed in

4092-435: Is the process of generating electric power from sources of primary energy . For utilities in the electric power industry , it is the stage prior to its delivery ( transmission , distribution , etc.) to end users or its storage , using for example, the pumped-storage method. Consumable electricity is not freely available in nature, so it must be "produced", transforming other forms of energy to electricity. Production

4216-538: Is the sixth-largest power supplier and largest public utility in the country. The TVA was created by Congress in 1933 as part of President Franklin D. Roosevelt 's New Deal . Its initial purpose was to provide navigation , flood control , electricity generation , fertilizer manufacturing, regional planning , and economic development to the Tennessee Valley , a region that had suffered from lack of infrastructure and even more extensive poverty during

4340-429: Is then used to spin turbines that turn generators . Thus chemical energy stored in coal is converted successively into thermal energy , mechanical energy and, finally, electrical energy . Natural gas is ignited to create pressurised gas which is used to spin turbines to generate electricity. Natural gas plants use a gas turbine where natural gas is added along with oxygen which in turn combusts and expands through

4464-517: Is under the jurisdiction of the SERC Reliability Corporation . Like most North American utilities, TVA uses a maximum transmission voltage of 500 kilovolts (kV), with lines carrying this voltage using bundled conductors with three conductors per phase. The vast majority of TVA's transmission lines carry 161 kV, with the company also operating a number of sub-transmission lines with voltages of 69 kV and 46kV. They also operate

4588-682: Is used by the National Nuclear Security Administration for nuclear weapons , where it is used to supercharge and boost the explosive yield of the U.S. nuclear arsenal . TVA owns and operates its own electric grid , which consists of approximately 16,200 miles (26,100 km) of lines, one of the largest grids in the United States. This grid is part of the Eastern Interconnection of the North American power transmission grid , and

4712-540: The Environmental Protection Agency (EPA), four state governments, and three environmental groups to drastically reduce pollution and carbon emissions. Under the terms of the agreement, TVA was required to retire at least 18 of its 59 coal-fired units by the end of 2018, and install scrubbers in several others or convert them to make them cleaner, at a cost of $ 25 billion, by 2021. As a result, TVA closed several of its coal-fired power plants in

4836-485: The Great Depression than other regions of the nation. TVA was envisioned both as a power supplier and a regional economic development agency that would work to help modernize the region's economy and society. It later evolved primarily into an electric utility. It was the first large regional planning agency of the U.S. federal government, and remains the largest. Under the leadership of David E. Lilienthal ,

4960-653: The Niger River . While centering of water and hydroelectric resources, the NBA nations use the organisation to harmonise the development of energy, agriculture, forestry, transport, communications, and industrial resources of the member nations. The NBA has worked to create an "Integrated Development Plan of the Basin", especially focusing on cross boundary projects. The NBA itself has been ceded no sovereign power over resources or management, and therefore all regulation must be imposed by individual sovereign governments. While not

5084-678: The Old Customs House in Knoxville from 1936 until 1976, when the current complex opened. The building is now operated as a museum and is listed on the National Register of Historic Places . The Tennessee Valley Authority Police is the primary law enforcement agency for the company. Initially part of the TVA, in 1994 the TVA Police was authorized as a federal law enforcement agency . The Tennessee Valley Authority

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5208-550: The Public Utility Holding Company Act of 1935 (PUHCA). During his 1932 presidential campaign, Franklin D. Roosevelt expressed his belief that private utilities had "selfish purposes" and said, "Never shall the federal government part with its sovereignty or with its control of its power resources while I'm President of the United States." U.S. Senator George W. Norris of Nebraska also distrusted private utility companies, and in 1920 blocked

5332-718: The Tennessee Electric Power Company (TEPCO), Jo Conn Guild , was vehemently opposed to the creation of TVA, and with the help of attorney Wendell Willkie , challenged the constitutionality of the TVA Act in federal court. The U.S. Supreme Court again upheld the TVA Act, however, in its 1939 decision Tennessee Electric Power Company v. TVA . On August 16, 1939, TEPCO was forced to sell its assets, including Hales Bar Dam , Ocoee Dams 1 and 2 , Blue Ridge Dam and Great Falls Dam to TVA for $ 78 million (equivalent to $ 1.34 billion in 2023 ). In 1981

5456-609: The Three Mile Island accident , Chernobyl disaster and the Fukushima nuclear disaster illustrate this problem. The table lists 45 countries with their total electricity capacities. The data is from 2022. According to the Energy Information Administration , the total global electricity capacity in 2022 was nearly 8.9 terawatt (TW), more than four times the total global electricity capacity in 1981. The global average per-capita electricity capacity

5580-571: The late December 2022 North American winter storm . As many as 24,000 Nashville Electric Service customers were without power, with thousands more from smaller distributors affected as well. TVA was heralded by New Dealers and the New Deal Coalition not only as a successful economic development program for a depressed area but also as a democratic nation-building effort overseas because of its alleged grassroots inclusiveness as articulated by director David E. Lilienthal . However,

5704-429: The steam turbine had a massive impact on the efficiency of electrical generation but also the economics of generation as well. This conversion of heat energy into mechanical work was similar to that of steam engines , however at a significantly larger scale and far more productively. The improvements of these large-scale generation plants were critical to the process of centralised generation as they would become vital to

5828-499: The 1218 MW Hornsea Wind Farm in the UK is the largest offshore wind farm in the world . Individual wind turbine designs continue to increase in power , resulting in fewer turbines being needed for the same total output. A coal-fired power station or coal power plant is a thermal power station which burns coal to generate electricity . Worldwide there are about 2,500 coal-fired power stations, on average capable of generating

5952-481: The 1880s the popularity of electricity grew massively with the introduction of the Incandescent light bulb . Although there are 22 recognised inventors of the light bulb prior to Joseph Swan and Thomas Edison , Edison and Swan's invention became by far the most successful and popular of all. During the early years of the 19th century, massive jumps in electrical sciences were made. And by the later 19th century

6076-473: The 1950s. In 1955 coal surpassed hydroelectricity as TVA's top generating source. On August 6, 1959, President Dwight D. Eisenhower signed into law an amendment to the TVA act, making the agency self-financing. During the 1950s, TVA's generating capacity nearly quadrupled. The 1960s were years of further unprecedented economic growth in the Tennessee Valley. Capacity growth during this time slowed, but ultimately increased 56% between 1960 and 1970. To handle

6200-755: The 2008–2012 priority five-year plan, acceleration of the Taoussa Dam project in Mali and the Kandadji Dam project in Niger. The Authority derives funds both from member states and from international donors. The NBA participates in cooperative projects with organisations such as the World Wildlife Fund , Wetlands International , Ramsar and foreign donor governments. Tennessee Valley Authority The Tennessee Valley Authority ( TVA )

6324-564: The 2010s, converting some to natural gas. These include John Sevier in 2012, Shawnee Unit 10 in 2014, Widows Creek in 2015, Colbert in 2016, Johnsonville and Paradise Units 1 and 2 in 2017, Allen in 2018, and Paradise Unit 3 in 2020. In 2018, TVA opened a new cybersecurity center in its downtown Chattanooga Office Complex. More than 20 Information Technology specialists monitor emails, Twitter feeds and network activity for cybersecurity threats and threats to grid security. Across TVA's digital platform, two billion activities occur each day. The center

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6448-943: The Depression years, it has developed primarily into a power utility. Despite its shares being owned by the federal government, TVA operates like a private corporation, and receives no taxpayer funding. The TVA Act authorizes the company to use eminent domain . TVA provides electricity to approximately ten million people through a diverse portfolio that includes nuclear , coal-fired , natural gas -fired, hydroelectric , and renewable generation. TVA sells its power to 153 local power utilities, 58 direct-serve industrial and institutional customers, 7 federal installations, and 12 area utilities. In addition to power generation, TVA provides flood control with its 29 hydroelectric dams. Resulting lakes and other areas also allow for recreational activities. The TVA also provides navigation and land management along rivers within its region of operation, which

6572-844: The Eastern District of Tennessee . The initial spill resulted in no injuries or deaths, but several of the employees of an engineering firm hired by TVA to clean up the spill developed illnesses, some of which were fatal, and in November 2018, a federal jury ruled that the contractor did not properly inform the workers about the dangers of exposure to coal ash and had failed to provide them with necessary personal protective equipment. In 2009, to gain more access to sustainable, green energy, TVA signed 20-year power purchase agreements with Maryland-based CVP Renewable Energy Co. and Chicago-based Invenergy Wind LLC for electricity generated by wind farms. In April 2011, TVA reached an agreement with

6696-744: The Heads of State of the Niger Basin Authority and Partners . The 8th "Summit of the Niger Basin Authority Heads of State and Government" took place in Niamey in April 2008, and agreed on the implementation of several documents. These included the "2008-2027 Investment Programme of the River Niger Basin", the "Water Charter of the River Niger Basin", the creation of a donors' meeting for the implementation of

6820-741: The New Dealers' spending mood by expanding the Army Corps' flood control program. They also helped defeat further valley authorities, the most promising of the New Deal water policy reforms. When Democrats after 1945 began proclaiming the Tennessee Valley Authority as a model for countries in the developing world to follow, conservative critics charged that it was a top-heavy, centralized, technocratic venture that displaced locals and did so in insensitive ways. Thus, when

6944-580: The Northern America in the 1920s in large cities and urban areas. It was not until the 1930s that rural areas saw the large-scale establishment of electrification. 2021 world electricity generation by source. Total generation was 28 petawatt-hours . Several fundamental methods exist to convert other forms of energy into electrical energy. Utility-scale generation is achieved by rotating electric generators or by photovoltaic systems. A small proportion of electric power distributed by utilities

7068-704: The Reservoir Operations Study (ROS) on how it operates the Tennessee River system. The following year, the company announced its intention to construct an Advanced Pressurized Water Reactor at its Bellefonte site in Alabama, filing the necessary applications in November 2007. This proposal was gradually trimmed over the following years, and essentially voided by 2016. In October 2007, construction resumed on Watts Bar Unit 2 . which began commercial operation in October 2016. Watts Bar Unit 2

7192-641: The TVA Board of Directors broke with previous tradition and took a hard line against white-collar unions during contract negotiations. As a result, a class action suit was filed in 1984 in U.S. District Court charging the agency with sex discrimination under Title VII of the Civil Rights Act of 1964 based on the large number of women in one of the pay grades negatively impacted by the new contract. TVA reached an out-of-court settlement in 1987, in which they agreed to contract modifications and paid

7316-714: The TVA Board voted to approve an advanced approach of nuclear energy technology with an estimated $ 200 million investment, known as the New Nuclear Program (NNP) in February 2022. This would promote the construction of new nuclear power facilities, particularly small modular reactors , with the first facility being constructed in partnership with Oak Ridge National Laboratory at the Clinch River Nuclear Site in Oak Ridge . On December 23, 2022, TVA had several hours of rolling blackouts due to

7440-441: The TVA also became the global model for the United States' later efforts to help modernize agrarian societies in the developing world . The TVA historically has been documented as a success in its efforts to modernize the Tennessee Valley and helping to recruit new employment opportunities to the region. Historians have criticized its use of eminent domain and the displacement of over 125,000 Tennessee Valley residents to build

7564-419: The TVA chairman and another board member, saying they were overpaid and had outsourced 200 high-tech jobs. The move came after U.S. Tech Workers, a nonprofit that works to limit visas given to foreign technology workers, criticized the TVA for laying off its own workers and replacing them with contractors using foreign workers with H-1B visas . Citing its aspiration to reach net-zero carbon emissions in 2050,

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7688-477: The TVA forced residents to sell their property at values less than the fair market value , and indirectly destabilized the real estate market for farmland. Some displaced residents committed suicide, unable to bear the events. On some occasions, land that TVA had acquired through eminent domain that was expected to be flooded by reservoirs was not flooded, and was instead given away to private developers. The 1960 film Wild River , directed by Elia Kazan , tells

7812-481: The TVA was controversial early on, as some believed its creation was an overreach by the federal government. Supporters of TVA note that the agency's management of the Tennessee River system without appropriated federal funding saves federal taxpayers millions of dollars annually. Opponents, such as Dean Russell in The TVA Idea, in addition to condemning the project as being socialistic , argued that TVA created

7936-492: The TVA. The agency was initially tasked with modernizing the region, using experts and electricity to combat human and economic problems. TVA developed fertilizers, and taught farmers ways to improve crop yields. In addition, it helped replant forests, control forest fires , and improve habitats for fish and wildlife. The Authority hired many of the area's unemployed for a variety of jobs: they conducted conservation , economic development , and social programs . For instance,

8060-721: The Tennessee River for electricity generation and navigation improvements. The National Defense Act of 1916 , signed into law by President Woodrow Wilson , authorized the construction of a hydroelectric dam on the Tennessee River in Muscle Shoals, Alabama , for the purpose of producing nitrates for ammunition. During the 1920s and the 1930s, Americans began to support the idea of public ownership of utilities , particularly hydroelectric power facilities. Many believed privately owned power companies were charging too much for power, did not employ fair operating practices, and were subject to abuse by their owners, utility holding companies, at

8184-435: The Tennessee Valley Authority. Even by Depression standards, the Tennessee Valley was in dire economic straits in 1933. Thirty percent of the population was affected by malaria . The average income in the rural areas was $ 639 per year (equivalent to $ 11,947 in 2024), with some families surviving on as little as $ 100 per year (equivalent to $ 1,870 in 2023). Much of the land had been exhausted by poor farming practices, and

8308-609: The Tennessee Valley largely concentrated on or near TVA reservoirs that include water access points, campgrounds, hiking trails, fishing piers, and equestrian facilities. TVA operates an economic development organization that works with companies and economic development agencies throughout the Tennessee Valley to create jobs via private investments. They also work with businesses to help them choose locations for facilities and expand existing facilities. Services provided include assistance with site selection, employee recruitment and training, and research. A total of seven sites throughout

8432-563: The United States and the third largest nuclear power fleet, with seven units at three sites . In addition, they also operate four coal-fired power plants , 29 hydroelectric dams, nine simple-cycle natural gas combustion turbine plants, nine combined cycle gas plants, 1 pumped storage hydroelectric plant, 1 wind energy site, and 14 solar energy sites. In fiscal year 2020, nuclear generation made up about 41% of TVA's total energy production, natural gas 26%, coal 14%, hydroelectric 13%, and wind and solar 3%. TVA purchases about 15% of

8556-597: The United States, fossil fuel combustion for electric power generation is responsible for 65% of all emissions of sulfur dioxide , the main component of acid rain. Electricity generation is the fourth highest combined source of NO x , carbon monoxide , and particulate matter in the US. According to the International Energy Agency (IEA), low-carbon electricity generation needs to account for 85% of global electrical output by 2040 in order to ward off

8680-408: The Valley are certified by TVA as megasites , which contain a minimum of 1,000 acres (4.0 km ), and have access to an Interstate Highway and the potential for rail service, and environmental impact study, and contain or have the potential to contain direct-serve industrial customers. In the late 19th century, the Army Corps of Engineers first recognized a number of potential dam sites along

8804-401: The Valley's electric power needs to continue to grow, TVA began building nuclear power plants in 1966 as a new source of power. The following year, TVA began work on the construction of Tellico Dam , which had been initially conceived in the 1930s and would later become its most controversial project. During the 1970s significant changes occurred in the economy of the Tennessee Valley and

8928-508: The ability to store the flow of water is limited and the load varies too much during the annual production cycle. Electric generators were known in simple forms from the discovery of electromagnetic induction in the 1830s. In general, some form of prime mover such as an engine or the turbines described above, drives a rotating magnetic field past stationary coils of wire thereby turning mechanical energy into electricity. The only commercial scale forms of electricity production that do not employ

9052-411: The advancement of electrical technology and engineering led to electricity being part of everyday life. With the introduction of many electrical inventions and their implementation into everyday life, the demand for electricity within homes grew dramatically. With this increase in demand, the potential for profit was seen by many entrepreneurs who began investing into electrical systems to eventually create

9176-400: The agency's five nuclear reactors return to service, and the institution of a rate freeze that continued for ten years. As the electric-utility industry moved toward restructuring and deregulation , TVA began preparing for competition. It cut operating costs by nearly $ 800 million a year, reduced its workforce by more than half, increased the generating capacity of its plants, and developed

9300-504: The agency's infrastructure projects. The Tennessee Valley Authority is a government-owned corporation created by U.S. Code Title 16 , Chapter 12A, the Tennessee Valley Authority Act of 1933. It was initially founded as an agency to provide general economic development to the region through power generation, flood control, navigation assistance, fertilizer manufacturing, and agricultural development. Since

9424-487: The atmosphere. Nuclear power plants can also create district heating and desalination projects, limiting carbon emissions and the need for expanded electrical output. A fundamental issue regarding centralised generation and the current electrical generation methods in use today is the significant negative environmental effects that many of the generation processes have. Processes such as coal and gas not only release carbon dioxide as they combust, but their extraction from

9548-501: The board until the end of the current congressional session (typically in December) or until their successors take office, whichever comes first. The current board members as of January 4, 2023: President Biden has nominated the following to fill a seat on the board. They await Senate confirmation. With a generating capacity of approximately 35 gigawatts (GW), TVA has the sixth highest generation capacity of any utility company in

9672-666: The company's nuclear reactor fleet. This includes fuel for the Browns Ferry Nuclear Plant , fuel handling equipment upgrades across the fleet and steam generator replacements at the Watts Bar Nuclear Plant . Framatome will provide its state-of-the-art ATRIUM 11 fuel for the three boiling water reactors at Browns Ferry . This contract makes TVA the third U.S. utility to switch to the ATRIUM 11 fuel design. On August 3, 2020, President Trump fired

9796-616: The cost of the panels. Low-efficiency silicon solar cells have been decreasing in cost and multijunction cells with close to 30% conversion efficiency are now commercially available. Over 40% efficiency has been demonstrated in experimental systems. Until recently, photovoltaics were most commonly used in remote sites where there is no access to a commercial power grid, or as a supplemental electricity source for individual homes and businesses. Recent advances in manufacturing efficiency and photovoltaic technology, combined with subsidies driven by environmental concerns, have dramatically accelerated

9920-572: The deployment of solar panels. Installed capacity is growing by around 20% per year led by increases in Germany, Japan, United States, China, and India. The selection of electricity production modes and their economic viability varies in accordance with demand and region. The economics vary considerably around the world, resulting in widespread residential selling prices. Hydroelectric plants , nuclear power plants , thermal power plants and renewable sources have their own pros and cons, and selection

10044-533: The electricity through high voltage transmission lines to a substation, where it is then distributed to consumers; the basic concept being that multi-megawatt or gigawatt scale large stations create electricity for a large number of people. The vast majority of electricity used is created from centralised generation. Most centralised power generation comes from large power plants run by fossil fuels such as coal or natural gas, though nuclear or large hydroelectricity plants are also commonly used. Centralised generation

10168-524: The entire power system that we now use today. Throughout the middle of the 20th century many utilities began merging their distribution networks due to economic and efficiency benefits. Along with the invention of long-distance power transmission , the coordination of power plants began to form. This system was then secured by regional system operators to ensure stability and reliability. The electrification of homes began in Northern Europe and in

10292-404: The environment. In France only 10% of electricity is generated from fossil fuels , the US is higher at 70% and China is at 80%. The cleanliness of electricity depends on its source. Methane leaks (from natural gas to fuel gas-fired power plants) and carbon dioxide emissions from fossil fuel-based electricity generation account for a significant portion of world greenhouse gas emissions . In

10416-402: The expense of consumers. The concept of government-owned generation facilities selling to publicly owned distribution utilities was controversial, and remains so today. The private sector practice of forming utility holding companies had resulted in them controlling 94 percent of generation by 1921, and they were essentially unregulated. In an effort to change this, Congress and Roosevelt enacted

10540-428: The first electricity public utilities. This process in history is often described as electrification. The earliest distribution of electricity came from companies operating independently of one another. A consumer would purchase electricity from a producer, and the producer would distribute it through their own power grid. As technology improved so did the productivity and efficiency of its generation. Inventions such as

10664-495: The fusion reaction (see magnetohydrodynamics ). Phasing out coal-fired power stations and eventually gas-fired power stations , or, if practical, capturing their greenhouse gas emissions , is an important part of the energy transformation required to limit climate change . Vastly more solar power and wind power is forecast to be required, with electricity demand increasing strongly with further electrification of transport , homes and industry. However, in 2023, it

10788-420: The generators. Although there are several types of nuclear reactors, all fundamentally use this process. Normal emissions due to nuclear power plants are primarily waste heat and radioactive spent fuel. In a reactor accident, significant amounts of radioisotopes can be released to the environment, posing a long term hazard to life. This hazard has been a continuing concern of environmentalists. Accidents such as

10912-494: The ground also impacts the environment. Open pit coal mines use large areas of land to extract coal and limit the potential for productive land use after the excavation. Natural gas extraction releases large amounts of methane into the atmosphere when extracted from the ground greatly increase global greenhouse gases. Although nuclear power plants do not release carbon dioxide through electricity generation, there are risks associated with nuclear waste and safety concerns associated with

11036-690: The group $ 5 million (equivalent to $ 11.5 million in 2023 ), but denied wrongdoing. TVA has received criticism throughout its entire history for what some have perceived as excessive use of its authority of eminent domain and an unwillingness to compromise with landowners. All of TVA's hydroelectric projects were made possible through the use of eminent domain, and displaced more than 125,000 Tennessee Valley residents. Residents who initially refused to sell their land were often forced to do so via court orders and lawsuits. Many of these projects also inundated historic Native American sites and early Colonial -era settlements. Historians have claimed that

11160-458: The heat input is from the process of nuclear fission . Currently, nuclear power produces 11% of all electricity in the world. Most nuclear reactors use uranium as a source of fuel. In a process called nuclear fission , energy, in the form of heat, is released when nuclear atoms are split. Electricity is created through the use of a nuclear reactor where heat produced by nuclear fission is used to produce steam which in turn spins turbines and powers

11284-468: The intent of also controlling floods, greatly improved the lives of farmers and rural residents, making their lives easier and farms in the Tennessee Valley more productive. They also provided new employment opportunities to the poverty-stricken regions in the Valley. At the same time, however, they required the displacement of more than 125,000 valley residents or roughly 15,000 families, as well as some cemeteries and small towns, which caused some to oppose

11408-518: The investigation. In 1963, U.S. Senator and Republican presidential candidate Barry Goldwater was quoted in a Saturday Evening Post article by Stewart Alsop as saying, "You know, I think we ought to sell TVA." He had called for the sale to private companies of particular parts of the Authority, including its fertilizer production and steam-generation facilities, because "it would be better operated and would be of more benefit for more people if it were part of private industry." Goldwater's quotation

11532-537: The late 1940s and early 1950s, however. TVA was one of the first federal hydropower agencies, and was quickly hailed as a success. While most of the nation's major hydropower systems are federally managed today, other attempts to create similar regional corporate agencies have failed. The most notable was the proposed Columbia Valley Authority for the Columbia River in the Pacific Northwest , which

11656-469: The major contributors being Thomas Alva Edison and Nikola Tesla . Previously the only way to produce electricity was by chemical reactions or using battery cells, and the only practical use of electricity was for the telegraph . Electricity generation at central power stations started in 1882, when a steam engine driving a dynamo at Pearl Street Station produced a DC current that powered public lighting on Pearl Street , New York . The new technology

11780-501: The nation's largest electricity supplier. Even so, the demand for electricity was outstripping TVA's capacity to produce power from hydroelectric dams, and so TVA began to construct additional coal-fired plants. Political interference kept TVA from securing additional federal appropriations to do so, so it sought the authority to issue bonds. Several of TVA's coal-fired plants, including Johnsonville , Widows Creek , Shawnee , Kingston , Gallatin , and John Sevier , began operations in

11904-411: The nation, prompted by energy crises in 1973 and 1979 and accelerating fuel costs throughout the decade. The average cost of electricity in the Tennessee Valley increased fivefold from the early 1970s to the early 1980s. TVA's first nuclear reactor, Browns Ferry Unit 1 , began commercial operation on August 1, 1974. Between 1970 and 1974, TVA set out to construct a total of 17 nuclear reactors, due to

12028-426: The officials had to find leaders in the communities and convince them that crop rotation and the judicious application of fertilizers could restore soil fertility. Once they had convinced the leaders, the rest followed. TVA immediately embarked on the construction of several hydroelectric dams, with the first, Norris Dam in upper East Tennessee , breaking ground on October 1, 1933. These facilities, designed with

12152-479: The original focus of the NBA, environmental protection from the threats of desertification , deforestation and pollution of the rivers by agriculture and industry have become a major theme of their work. Nine countries which have some of their territories in the Niger Basin are member states of the NBA: Benin , Burkina Faso , Cameroon , Chad , Côte d'Ivoire , Guinea , Mali , Niger and Nigeria . Although

12276-425: The other major large-scale solar generation technology, which uses heat to drive a variety of conventional generator systems. Both approaches have their own advantages and disadvantages, but to date, for a variety of reasons, photovoltaic technology has seen much wider use. As of 2019 , about 97% of utility-scale solar power capacity was PV. In some countries, the nameplate capacity of photovoltaic power stations

12400-897: The planned nuclear plants put the agency in deep financial trouble. In an effort to restructure and improve efficiency and financial stability, TVA began shifting towards a more corporate environment in the latter 1980s. Marvin Travis Runyon , a former corporate executive in the automotive industry , became chairman of the TVA in January 1988, and pledged to stabilize the agency financially. During his four-year term he worked to reduce management layers, and reduced overhead costs by more than 30%, which required thousands of workers to be laid off and many operations transferred to private contractors. These moves resulted in cumulative savings and efficiency improvements of $ 1.8 billion (equivalent to $ 3.51 billion in 2023 ). His tenure also saw three of

12524-458: The power it sells from other power producers, which includes power from combined cycle natural gas plants, coal plants, and wind installations, and other renewables. The cost of Purchased Power is part of the "Fuel Cost Adjustment" (FCA) charge that is separate from the TVA Rate. In addition, the Watts Bar Nuclear Plant is the only facility in the country to industrially produce tritium , which

12648-658: The program was used as the basis for modernization programs in various parts of the third world during the Cold War , such as in the Mekong Delta in Vietnam , its failure brought a backlash of cynicism toward modernization programs that has persisted. In 1953, President Dwight D. Eisenhower referred to the TVA as an example of "creeping socialism". The following year, then-film actor and later 40th President Ronald Reagan began hosting General Electric Theater , which

12772-434: The projects, especially in rural areas. The projects also inundated several Native American archaeological sites, and graves were reinterred at new locations, along with new tombstones. The available electricity attracted new industries to the region, including textile mills , providing desperately needed jobs, many of which were filled by women. A few regions of the Tennessee Valley did not receive electricity until

12896-459: The same time, and design and construction employment reached a total of 28,000. In its first eleven years, TVA constructed a total of 16 hydroelectric dams. During the war, the agency also provided 60% of the elemental phosphorus used in munitions, produced maps of approximately 500,000 square miles (1,300,000 km ) of foreign territory using aerial reconnaissance , and provided mobile housing for war workers. The largest project of this period

13020-565: The soil was eroded and depleted. Crop yields had fallen, reducing farm incomes. The best timber had been cut, and 10% of forests were lost to fires each year. President Franklin Delano Roosevelt signed the Tennessee Valley Authority Act (ch. 32, Pub. L.   73–17 , 48  Stat.   58 , enacted May 18, 1933 , codified as amended at 16 U.S.C.   § 831 , et seq.), creating

13144-551: The states includes regulation of streams and that controlling floods is required for keeping streams navigable; it also upheld the constitutionality of the TVA under the War Powers Clause , seeing its activities as a means of assuring the electric supply for the manufacture of munitions in the event of war. The argument before the court was that electricity generation was a by-product of navigation and flood control and therefore could be considered constitutional. The CEO of

13268-522: The story about a family forced to relocate from their land, which has been owned by their ancestors for generations, after TVA plans to construct a dam which will flood it. While fictional, the film depicts the real-life experiences of many people forced to give up their land to TVA to make way for hydroelectric projects, and was mostly inspired by the removal of families for the Norris Dam project. Electricity generation Electricity generation

13392-414: The strength of opposing interest groups also mattered. The TVA bill was able to attain passage because reformers like Norris skillfully coordinated action at potential choke points and weakened the already disorganized opponents among the electric power industry lobbyists. In 1936, after regrouping, opposing river lobbyists and members of congress who were part of the conservative coalition took advantage of

13516-444: The turbine to force a generator to spin. Natural gas power plants are more efficient than coal power generation, they however contribute to climate change, but not as highly as coal generation. Not only do they produce carbon dioxide from the ignition of natural gas, the extraction of gas when mined releases a significant amount of methane into the atmosphere. Nuclear power plants create electricity through steam turbines where

13640-529: The two at Sequoyah coming back online three years later and Browns Ferry's three reactors coming back online in 1991, 1995 and 2007. Construction of the Tellico Dam raised political and environmental concerns, as laws had changed since early development in the valley. Scientists and other researchers had become more aware of the massive environmental effects of the dams and new lakes, and worried about preserving habitats and species. The Tellico Dam project

13764-591: The two plants would reduce its carbon output by about 4.4% annually. TVA announced in April 2021 plans to completely phase out coal power by 2035. The following month, the board voted to consider replacing almost all of their operating coal facilities with combined-cycle gas plants. Such plants considered for gas plant redevelopment include the Cumberland, Gallatin, Shawnee, and Kingston facilities. In early February 2020, TVA awarded an outside company, Framatome , several multi-million-dollar contracts for work across

13888-413: The use of nuclear sources. Per unit of electricity generated coal and gas-fired power life-cycle greenhouse gas emissions are almost always at least ten times that of other generation methods. Centralised generation is electricity generation by large-scale centralised facilities, sent through transmission lines to consumers. These facilities are usually located far away from consumers and distribute

14012-496: The war effort. However, the abundance of TVA power was one of the major factors in the decision by the U.S. Army to locate uranium enrichment facilities in Oak Ridge, Tennessee , for the world's first atomic bombs . This was part of an effort codenamed the Manhattan Project . By the end of World War II, TVA had completed a 650-mile (1,050 km) navigation channel the length of the Tennessee River and had become

14136-698: The worst effects of climate change. Like other organizations including the Energy Impact Center (EIC) and the United Nations Economic Commission for Europe (UNECE), the IEA has called for the expansion of nuclear and renewable energy to meet that objective. Some, like EIC founder Bret Kugelmass, believe that nuclear power is the primary method for decarbonizing electricity generation because it can also power direct air capture that removes existing carbon emissions from

14260-466: Was completed in 2015 at a cost of more than $ 1 billion, was the largest industrial spill in United States history, and considered one of the worst environmental disasters of all time. A 2009 report by engineering firm AECOM found a number of inadequate design factors of the ash pond were responsible for the spill, and in August 2012, TVA was found liable for the disaster by the U.S. District Court for

14384-646: Was initially delayed because of concern over the snail darter , a small ray-finned fish which had been discovered in the Little Tennessee River in 1973 and listed as an endangered species two years later. A lawsuit was filed under the Endangered Species Act and the U.S. Supreme Court ruled in favor of protecting the snail darter in Tennessee Valley Authority v. Hill in 1978. The project's main motive

14508-477: Was modeled off of TVA, but did not gain approval. In order to provide the power for essential industries during World War II , TVA engaged in one of the largest hydropower construction programs ever undertaken in the U.S. This was especially important for the energy-intensive aluminum industry, which was used in airplanes and munitions. By early 1942, when the effort reached its peak, 12 hydroelectric plants and one coal-fired steam plant were under construction at

14632-497: Was quickly adopted by many cities around the world, which adapted their gas-fueled street lights to electric power. Soon after electric lights would be used in public buildings, in businesses, and to power public transport, such as trams and trains. The first power plants used water power or coal. Today a variety of energy sources are used, such as coal , nuclear , natural gas , hydroelectric , wind , and oil , as well as solar energy , tidal power , and geothermal sources. In

14756-409: Was reported that the global electricity supply was approaching peak CO2 emissions thanks to the growth of solar and wind power. The fundamental principles of electricity generation were discovered in the 1820s and early 1830s by British scientist Michael Faraday . His method, still used today, is for electricity to be generated by the movement of a loop of wire, or Faraday disc , between the poles of

14880-470: Was sponsored by General Electric (GE). He was fired in 1962 after publicly referring to the TVA, which was a major customer for GE turbines, as one of the problems of "big government". Some claim that Reagan was instead fired due to a criminal antitrust investigation involving him and the Screen Actors Guild . However, Reagan was only interviewed; nobody was actually charged with anything in

15004-473: Was the Fontana Dam . After negotiations led by then-Vice President Harry Truman , TVA purchased the land from Nantahala Power and Light, a wholly owned subsidiary of Alcoa , and built Fontana Dam. Also in 1942, TVA's first coal-fired plant, the 267-megawatt Watts Bar Steam Plant , began operation. The government originally intended the electricity generated from Fontana to be used by Alcoa factories for

15128-401: Was the first new nuclear reactor to enter service in the United States in the 21st century. On December 22, 2008, an earthen dike impounding a coal ash pond at TVA's Kingston Fossil Plant failed, releasing 1.1 billion US gallons (4,200,000 m ) of coal ash slurry across 300 acres (1.2 km ) of land and into two tributaries of the Tennessee River. The spill, of which cleanup

15252-477: Was to support recreational and tourism development, unlike earlier dams constructed by TVA. Land acquired by eminent domain for the Tellico Dam and its reservoir that encountered minimal inundation was sold to private developers for the construction of present-day Tellico Village , a planned retirement community . The inflation crises of the 1970s and early 1980s, combined with the cancellation of several of

15376-507: Was used against him in a TV ad by Doyle Dane Bernbach for then-President Lyndon B. Johnson 's 1964 campaign , which depicted an auction taking place atop a dam and promised that Johnson would not sell TVA. The TVA has faced multiple constitutional challenges. The United States Supreme Court ruled TVA to be constitutional in Ashwander v. Tennessee Valley Authority (297 U.S. 288) in 1936. The Court noted that regulating commerce among

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