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To express the efficiency of a generator or power plant as a percentage, invert the value if dimensionless notation or same unit are used. For example: A heat rate value of 5 gives an efficiency factor of 20%. A heat rate value of 2 kWh/kWh gives an efficiency factor of 50%. A heat rate value of 4 MJ/MJ gives an efficiency factor of 25%.
The following page lists hydroelectric power stations that generate power using the run-of-the-river method. This list includes most power stations that are larger than 100 MW in maximum net capacity, which are currently operational or under construction.
Moreover, run-of-the-river hydroelectric plants do not have reservoirs, thus eliminating the methane and carbon dioxide emissions caused by the decomposition of organic matter in the reservoir of a conventional hydroelectric dam. [12] That is a particular advantage in tropical countries, where methane generation can be a problem.
Previous pumped-storage systems used separate pumps with a network of pipes to return water to the upper reservoir, making them more expensive to build than conventional hydroelectric systems. [9] Cruachan is pre-dated by the smaller 232 megawatts (311,000 hp) Lünerseewerk ( de ) (Austria, 1958) and the 360 megawatts (480,000 hp) Ffestiniog ...
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The efficiency advantages of Pelton's invention were quickly recognized and his product was soon in high demand. He patented his invention on 26 October 1880. [ 5 ] By the mid-1880s, the Miners Foundry could not meet the demand, and in 1888, Pelton sold the rights to his name and the patents to his invention to the Pelton Water Wheel Company in ...
Another proposal, Penzhin Tidal Power Plant, presumes an installed capacity up to 87,100 MW. The largest hydroelectric power stations top the list of the largest power stations of any kind, are among the largest hydraulic structures and are some of the largest artificial structures in the world.
Dinorwig's very rapid response capability significantly reduced the need to hold spinning reserve on part loaded thermal plant. When the plant was conceived the CEGB used low efficiency old coal and oil fired capacity to meet peaks in demand. More efficient 500 MW thermal sets were introduced in the 1960s, initially for baseload operation only ...