The contract concerns the project CoMPAS (Configuration Modules for Power industry Automation Systems), software for managing and configuring the digital substations of the electricity grid. As part of six work packages, the contract covers the implementation and validation of API and interoperability rules for plugins, a shared design concept and library of interface components, security as well as quality work required to achieve the highest level of the OpenSSF Best Practices badge. It furthermore features secure access and data separation in backend services; the validation of security approaches and testing methodologies, including a standard test suite and a certification process for compatible plugins; and consolidated documentation for users and contributors. The aim of this service is to support the smart grid revolution to strengthen collaboration of the sector with the strategic use of open source as shared infrastructure, giving grid operators control over the configuration of their own substations and the capacity to reconfigure them, including after an attack.