The present document considers: 1) systems suitable for Critical Infrastructure Utility Operations Smart Grids; 2) the essential requirements for systems suitable for other Utility Operations radio systems; 3) the long-term spectrum requirements for Utilities. The present document identifies the functional requirements for existing and future radio systems for critical infrastructure utility operators@ e.g. electricity and gas@ and associated implications for spectrum requirements. Requirements for Smart Cities or Smart Homes are not within the scope of the present document. The present document does not contain any spectrum requests. It is envisaged that a further Technical Report (TR) will be developed complementing the present document and providing a formal System Reference Document for CEPT to consider.