The Marine Energy Projects Database is a knowledge hub containing information on past and present marine energy deployments around the world. The Marine Energy Projects Database provides researchers, regulators, developers, and other stakeholders with data and information regarding open-water projects, test sites, marine energy devices, and associated organizations. Key features include tabular views of data associated with each page type, connections among page types, and a technologies page which explains the meaning of key fields in the database. The knowledge hub is actively curated to keep its contents accurate, and data can be submitted by the public.