Retrofitting untapped dams
Although more than 92,000 dams populate the country, the vast majority—about 89,000—do not generate electricity through hydropower.
Jul 7, 2022
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Although more than 92,000 dams populate the country, the vast majority—about 89,000—do not generate electricity through hydropower.
Jul 7, 2022
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"Why do we allow hydropower plants with outlets into rivers to operate with rapid water level changes when Norway has plenty of power plant outlets that flow into the sea?" asks NTNU researcher Jo Hallvard Halleraker.
Jun 28, 2022
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In the last few years, U.S. summers have looked a little apocalyptic. Wildfires raged across the West Coast. Floods stole homes. In July 2021, the Earth's hottest month ever was recorded, and power grids flickered, causing ...
Jun 8, 2022
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The water in Lake Powell, one of the nation's largest reservoirs, has fallen so low amid the Western drought that federal officials are resorting to emergency measures to avoid shutting down hydroelectric power at the Glen ...
May 17, 2022
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In early April, the Intergovernmental Panel on Climate Change, the IPCC, issued its Working Group III report describing options for what the nations of the world can do to keep global warming from reaching catastrophic levels.
Apr 27, 2022
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A new Department of Energy report produced by Oak Ridge National Laboratory (ORNL) identifies several supply chain must-haves in maintaining the pivotal role hydropower will play in decarbonizing the nation's grid.
Apr 18, 2022
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In our transition towards a more sustainable future, hydropower will likely grow in importance as a renewable energy source. Despite its potential, innovation in hydropower technology has been slow in the last century. Conventional ...
Mar 7, 2022
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America's most critical piece of energy infrastructure—the grid—is more vulnerable than ever before. The reasons are two-fold: a shift in power source mix is affecting grid stability, combined with an uptick in natural ...
Feb 1, 2022
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In the early 1970s, water turned gold. As oil supplies plummeted, prices skyrocketed. Congress, desperate for anything not-oil, compelled electricity companies to buy up local hydroelectric energy at luxurious prices, launching ...
Nov 1, 2021
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After water levels at a California dam fell to historic lows this summer, the main hydropower plant it feeds was shut down. At the Hoover Dam in Nevada—one of the country's biggest hydropower generators—production is ...
Oct 10, 2021
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Hydropower, hydraulic power, hydrokinetic power or water power is power that is derived from the force or energy of falling water, which may be harnessed for useful purposes. Since ancient times, hydropower has been used for irrigation and the operation of various mechanical devices, such as watermills, sawmills, textile mills, dock cranes, and domestic lifts. Since the early 20th century, the term is used almost exclusively in conjunction with the modern development of hydro-electric power, the energy of which could be transmitted considerable distance between where it was created to where it was consumed.
Another previous method used to transmit energy had employed a trompe, which produces compressed air from falling water, that could then be piped to power other machinery at a distance from the energy source.
Water's power is manifested in hydrology, by the forces of water on the riverbed and banks of a river. When a river is in flood, it is at its most powerful, and moves the greatest amount of sediment. This higher force results in the removal of sediment and other material from the riverbed and banks of the river, locally causing erosion, transport and, with lower flow, sedimentation downstream.
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