See also
| Africa |  | |
|---|---|---|
| Asia | ||
| Australasia | ||
| Europe |
| |
| North America | ||
| South America | ||
Many of the dams and reservoirs in Brazil listed below are used primarily used to produce hydroelectric power. Other uses include flood control, irrigation and fisheries.
| Africa | | |
|---|---|---|
| Asia | ||
| Australasia | ||
| Europe |
| |
| North America | ||
| South America | ||
The Itaipu Dam is a hydroelectric dam on the Paraná River located on the border between Brazil and Paraguay. It is the third largest hydroelectric dam in the world, and holds the 45th largest reservoir in the world.
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower. Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. However, when constructed in lowland rainforest areas, where part of the forest is inundated, substantial amounts of greenhouse gases may be emitted.
An underground power station is a type of hydroelectric power station constructed by excavating the major components from rock, rather than the more common surface-based construction methods.
The Simón Bolívar Hydroelectric Plant, also Guri Dam, previously known as the Raúl LeoniHydroelectric Plant, is a concrete gravity and embankment dam in Bolívar State, Venezuela, on the Caroni River, built from 1963 to 1969. It is 7,426 metres long and 162 m high. It impounds the large Guri Reservoir with a surface area of 4,250 square kilometres (1,641 sq mi).
Run-of-river hydroelectricity (ROR) is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage is subject to seasonal river flows, thus the plant will operate as an intermittent energy source. Conventional hydro uses reservoirs, which regulate water for flood control, dispatchable electrical power, and the provision of fresh water for agriculture.
As of 2018, renewable energy accounted for 79% of the domestically produced electricity used in Brazil.
Brazil is the 10th largest energy consumer in the world and the largest in South America. At the same time, it is an important oil and gas producer in the region and the world's second largest ethanol fuel producer. The government agencies responsible for energy policy are the Ministry of Mines and Energy (MME), the National Council for Energy Policy (CNPE), the National Agency of Petroleum, Natural Gas and Biofuels (ANP) and the National Agency of Electricity (ANEEL). State-owned companies Petrobras and Eletrobras are the major players in Brazil's energy sector, as well as Latin America's.
The Tucuruí Dam is a concrete gravity dam on the Tocantins River located on the Tucuruí County in the State of Pará, Brazil. The main purpose of the dam is hydroelectric power production and navigation. It is the first large-scale hydroelectric project in the Brazilian Amazon rainforest. The installed capacity of the 25-unit plant is 8,370 megawatts (11,220,000 hp). Phase I construction began in 1980 and ended in 1984 while Phase II began in 1998 and ended in 2010. The dam was featured in the 1985 film The Emerald Forest.
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.
The Sobradinho Dam is a large hydroelectric dam built on the São Francisco River in Sobradinho, in the state of Bahia of Brazil. Completed in 1982, the dam generates power by utilizing six 175 megawatts (235,000 hp) Francis turbine-generators, totalling the installed capacity to 1,050 megawatts (1,410,000 hp).
India is 5th globally for installed hydroelectric power capacity. As of 31 March 2020, India's installed utility-scale hydroelectric capacity was 46,000 MW, or 12.3% of its total utility power generation capacity. Additional smaller hydroelectric power units with a total capacity of 4,683 MW have been installed. India's hydroelectric power potential is estimated at 148,700 MW at 60% load factor. In the fiscal year 2019–20, the total hydroelectric power generated in India was 156 TWh with an average capacity factor of 38.71%.
The Xingó Dam is a concrete face rock-fill dam on the São Francisco River on the border of Alagoas and Sergipe, near Piranhas, Brazil. The dam was built for navigation, water supply and hydroelectric power generation as it supports a 3,162 megawatts (4,240,000 hp) power station. It was constructed between 1987 and 1994 and the last of its generators was commissioned in 1997. In Portuguese, the dam is called the Usina Hidrelétrica de Xingó.
The São Simão Dam is an embankment dam on the Paranaíba River near São Simão in Goiás/Minas Gerais, Brazil. It was constructed for hydroelectric power production and flood control. The dam was completed in 1978 and all generators were operational by 1979. In 1977, the first use of roller compacted concrete in Brazilian dam construction occurred on the São Simão.
The Três Marias Dam, also known as Bernardo Mascarenhas, is an embankment dam on the São Francisco River near Três Marias in Minas Gerais, Brazil. It was constructed for hydroelectric power production and flood control. The dam was completed in 1961 and its first generator was operational in 1962. The dam's power plant is named after Bernard Mascarenhas who in 1889, built South America's first major hydroelectric power plant in Brazil, the Marmelos Zero Power Plant.
As of 2018, hydroelectric power stations in the United Kingdom accounted for 1.87 GW of installed electrical generating capacity, being 2.2% of the UK's total generating capacity and 4.2% of UK's renewable energy generating capacity. This includes four conventional hydroelectric power stations and run-of-river schemes for which annual electricity production is approximately 5,000 GWh, being about 1.3% of the UK's total electricity production. There are also pumped-storage hydroelectric power stations providing a further 2.8 GW of installed electrical generating capacity, and contributing up to 4,075 GWh of peak demand electricity annually.
The Jaguara Dam is an embankment dam on the Grande River about 6 kilometres (3.7 mi) north of Rifaina, Brazil. The dam is on the border of Conquista municipality in the state of Minas Gerais to the north and Rifaina municipality in the state of São Paulo to the south. It was constructed between 1966 and 1971 for the purpose of hydroelectric power generation. The power station at the dam has an installed capacity of 424 megawatts (569,000 hp) and is owned by CEMIG.