This guide specifies the requirements and testing methods for a stationary energy feedback system to be used in trackside installations for a dc electrified railway power supply network. This system can harvest electric energy from the dc power supply network and feed the energy back to the ac power supply network. This guide covers terms and definitions, rating values, performance requirements, and test requirements. Performance requirements include efficiency, temperature, lifetime, control and protection, electromagnetic compatibility (EMC), and mechanical characteristics. Test requirements will cover methods and criteria for type test, routine test, and commissioning test. However, the systems with the following functions are not included in this guide: - Resistive consumption of regenerated power - Energy storage system