(Sub-) National ministry or ministries that due to their mandate are essential for the success of the project of the Mitigation Action Facility, and that endorse the Project Outline and, upon selection for DPP, the Project Proposal. Partner Ministry /-ies usually serve as Project Partners and have formalised relationships with the Implementation Organisation (e.g. in a form of a Memorandum of Understanding (MoU) or Implementation Agreement). These are often line/sector ministries and ministries in charge of environmental and climate change related matters.