Welcome to the Space Power Capabilities (SPOC) project. SPOC seeks to collect, disseminate, and facilitate the use of specific, accurate, reliable, and verifiable quantitative data on current & past space capabilities. We are committed to standard scientific methods of data verification, replication, transparency, and review of our data collection procedures. We are also committed the the free public release of all data sets, and subsequent updates, for the purposes of research, information, verification, and replication. We intend to use our website as the hub of our data collection and distribution efforts. We welcome suggestions, questions, and feedback on possible errors, omissions, and/or additional variable inclusion and data expansion.