Buy The ISO 50001:2011 Standard
ISO 50001:2011 contains the requirements when creating, implementing, managing and enhancing an EnMS (Energy Management System), for the purpose of following a systematic methodolgy in achieving improvement in energy performance (i.e. energy use and consumption).
ISO 50001:2011 also includes the requirements when measuring energy consumption, including documentaiton, reporting, design and procurement practices for systems, processes and personnel.
ISO 50001:2011 is relevant to any organization desiring to conform to a stated energy policy and inclined to demonstrate this to others in a consistent approved manner. Such conformity can be confirmed by self-evaluation, or by certification of the energy management system by a certified Registrar.