FERC-566, Annual Report of a Utility's Twenty Largest Purchasers

The Commission uses the FERC-566 to identify a public utility's large purchasers of electric energy. The Federal Power Act (FPA) requires public utilities to publish and file this list with the Commission. Through a separate FPA required collection [the FERC Form No. 561 (Annual Report of Interlocking Positions, identification is made of public utility board members who are also board members of the utility's largest customers. The Commission uses the information from these two collections to inquire into and to determine whether public or private interests will be adversely affected by the concurrent holding of officer or director positions of both a public utility and its customers.

The latest form for FERC-566, Annual Report of a Utility's Twenty Largest Purchasers expires 2021-10-31 and can be found here.