Power to Gas Technology | Converting Surplus Energy to Gas The increasing penetration of renewable energy generation in the electric energy market is currently posing new critical issues, related to the generation prediction and scheduling, due to the mismatch between power production and utilization. In order to cope with these issues, the implementation of new large scale storage units on the electric network is foreseen as a key mitigation strategy. The Power to gas technology is one promising option in the context of these multi-dimensional challenges because Power to gas enables a combined temporal and spatial balancing solution for a time when renewable energy will supply the major part of the electrical demand. The storage concept links power and gas networks by the conversion of power into gas by two major steps: hydrogen (H2) production by water electrolysis and the following conversion of H2 and carbon dioxide (CO2) into methane (CH4) in the Sabatier reaction.