1. KEHAG Energiehandel GmbH, Oldenburg, Germany; Lintas Green Energy GmbH, Oldenburg, Germany; DLR Institute of Networked Energy Systems, Oldenburg, Germany
2. KEHAG Energiehandel GmbH, Oldenburg, Germany
3. KEHAG Energiehandel GmbH, Oldenburg, Germany; Energiebüro Erfurth, Nordstemmen, Germany
4. DLR Institute of Networked Energy Systems, Oldenburg, Germany
5. Ecological Economics Group, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany