The Greek islands produce electricity by means of diesel generators. In 2010, the Greek government started a project to determine a sustainable energy supply solution for these islands. The consortium of Evonik AG, Creavis, LI-tec, and a Greek partner was awarded the contract for the performance of services for the prototype concept for the supply of Agios Efstratios with renewable energies. STEAG Energy Services GmbH, being a part of the Evonik Group at that time, performed the engineering services necessary to demonstrate the technical project feasibility. Among others, these tasks were performed:

• Data collection and data evaluation
• Rating of PV and wind plants
• Rating of battery and hydrogen storage systems
• Engineering of a supervisory power control concept
• Revision of the electrical grid protection scheme
• Simulation of energy yield and proof of concept by big data evaluation
• Economic evaluation (CAPEX – OPEX) › Risk evaluation