This whitepaper provides a catalog of security requirements for procuring smart grid devices. Since 2015, ENCS has published a series of security requirements sets for procuring different smart grid systems as part of the Security Architecture program. Grid operators and vendors can use these sets when building new systems or updating existing ones. This whitepaper gathers all requirements from these sets in a structured way for two reasons: To allow ENCS members to use the requirements more easily in complex tenders and to help prepare the requirements for certification.