The Sustainable Development Goals (SDGs) with their interconnected targets can only be achieved if their interactions are seriously taken into consideration. Education for sustainability is crucial for raising awareness of different stakeholders about the SDGs and their interactions. The paper discusses how teamwork creation of Open Educational Resources (OER), with their specific benefits, can contribute to closing knowledge gaps about the SDGs and their interactions. The example of OE4BW (Open Education for a Better World) international mentoring program and its energy-related hub, called the SDG7 Hub is presented and discussed, and its future development, targeting the creation of OER to close the SDG7-related knowledge gaps, is suggested. The resulting guidelines are generalized to provide a further increase of OER's contribution to the achievement of SDGs.