What are RECs?

RECs are proof that energy has been generated from renewable electricity sources such as solar, hydro or wind power, and are the only way to verify the ownership and usage of renewable electricity placed on the grid. 

A REC is another name for an Energy Attribute Certificate (EAC). It is an accounting instrument representing one megawatt-hour (MWh) of renewable electricity that conveys a property right over the environmental attributes of that MWh, such as a zero emissions factor. 

Once a REC reaches the end consumer (beneficiary), the REC is retired (cancelled) in the registry so it cannot be double counted or double claimed.