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* '''[[Dispatchable generation|Dispatchability]]''' or '''maneuverability''' is the ability of a given power source to increase and decrease output quickly on demand. The concept is distinct from intermittency; dispatchability is one of several ways system operators match supply (generator's output) to system demand (technical loads).<ref name="MEFlowBattery"/>
* '''Penetration''' in this context is generally used to refer to the amount of energy generated as a percentage of annual consumption.<ref name="ieawind.org">[http://www.ieawind.org/AnnexXXV/Publications/Task25/Task%2025%20Design%20and%20Operation%20of%20Power%20Systems%20UWIG.pdf International Energy Agency Wind Task Force, "Design and Operation of Power Systems with Large Amounts of Wind Power"] Oklahoma Conference Presentation, October 2006</ref>
* '''Nominal power''' or '''[[nameplate capacity]]''' refers to the maximum output of a generating plant in normal operating conditions. This is the most common number used and typically expressed in
* '''[[Capacity factor]]''', '''average capacity factor''', or '''load factor''' is the average expected output of a generator, usually over an annual period. Expressed as a percentage of the nameplate capacity or in decimal form (e.g. 30% or 0.30).
* '''[[Capacity credit]]''': generally the amount of output from a power source that may be statistically relied upon, practically the minimum power within a longer period, usually expressed as a percentage of the nominal power.<ref name='WindCC'>{{cite web|url=http://ejournal.windeng.net/3/01/GGiebel-CapCredLit_WindEngEJournal_2005_right_links.pdf |title=WIND POWER HAS A CAPACITY CREDIT |accessdate=2008-10-16 |last=Giebel |first=Gregor |format=PDF |work=Risø National Laboratory }}</ref>
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