Search results
Results from the WOW.Com Content Network
Nameplate capacity, also known as the rated capacity, nominal capacity, installed capacity, maximum effect or gross capacity, [1] is the intended full-load sustained output of a facility such as a power station, [2] [3] electric generator, a chemical plant, [4] fuel plant, mine, [5] metal refinery, [6] and many others.
The figure usually refers to a period of one calendar year and is mainly applied to power plants. The annual utilisation rate or capacity factor derived from the number of full-load hours is the relative full-load utilisation in a year, i.e. the number of full-load hours divided by 8760 hours, the number of hours in a year with 365 days.
In 2021, the worldwide installed capacity of power plants increased by 347 GW. Solar and wind power plant capacities rose by 80% in one year. [27] As of 2022, the largest photovoltaic (PV) power plants in the world are led by Bhadla Solar Park in India, rated at 2245 MW. Solar thermal power stations in the U.S. have the following output:
The capacity credit can be much lower than the capacity factor (CF): in a not very probable scenario, if the riskiest time for the power system is after sunset, the capacity credit for solar power without coupled energy storage is zero regardless of its CF [3] (under this scenario all existing conventional power plants would have to be retained after the solar installation is added).
If a plant is only needed during the day, for example, even if it operates at full power output from 8 am to 8 pm every day (12 hours) all year long, it would only have a 50% capacity factor. Due to low capacity factors, electricity from peaking power plants is relatively expensive because the limited generation has to cover the plant fixed costs.
The facility generates power by utilizing 32 Francis turbines each having a capacity of 700 MW and two 50 MW turbines, [1] totalling the installed capacity to 22,500 MW, more than twice the installed capacity of the largest nuclear power station, the Kashiwazaki-Kariwa (Japan) at 7,965 MW.
Declared net capacity (DNC) is a measure of the contribution that a power station makes to the overall capacity of a distribution grid. It is measured in megawatts (MW), or in megawatts electrical for a thermal power station. DNC is sometimes expanded as developed net capacity in British English; The two expansions have exactly the same meaning.
Most electric power plants use some of the electricity they produce to operate the power plant. Net generation excludes the electricity used for the operation of the power plant. Capacity—the maximum level of electric power (electricity) that a power plant can supply at a specific point in time under certain conditions. [1]