View source for Watt-year

[[Category:Done 2018-06-15]] 
[[Category:units]] 
<onlyinclude>A '''watt-year''' (Wyr) is the measure of energy output by one [[watt]] in one year. This [[units|unit]] almost always refers to an amount of [[electricity]] generated by a group of [[power plant]]s or an entire [[electrical grid]].</onlyinclude>

Far more commonly, larger units of '''[[Prefixes|Mega]] watt-year''' (MWyr) and '''[[Prefixes|Giga]] watt-years''' (GWyr) are used. These units are helpful when describing the output of a large power plant over the course of a year. For example a 650 MW [[CANDU reactor]] will put out 650 MW-years over the course of a year. 

This unit is closely related to [[kilowatt-hour]], another energy unit which is a power times an interval of time.