Following the commissioning of the power generation unit in the generating facility, the grid operator is required to present a declaration of compliance. On the basis of commissioning and safety inspection records and an on-site assessment, this document confirms that both the power generating facility and unit comply to the guidelines confirmed by the facility certificate.
Submission of the declaration of compliance completes the certification process for electrical characteristics verification according to grid codes as well as the German SDLWindV ordinance (Verordnung zu Systemdienstleistungen durch Windenergieanlagen).