As the role of wind energy grows in the U.S. power grid, there is increased interest and requirements for it to provide essential reliability services (historically referred to as 'ancillary' services). 

This report helps evaluate the potential role of wind energy in providing essential reliability services, which are necessary for maintaining the reliability and stability of the grid both during normal operation and during and after contingency events.

An overview of the services, their technical requirements, the quantities of services currently procured in the United States and an estimate of the costs of procuring these services is also included. The report also summarizes the technical and regulatory issues around wind providing these essential reliability services.