Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Power-to-gas for Decentralized Energy Systems: Development of an Energy Hub Model for Hydrogen Storage

Portia Murray1,2, Akomeno Omu1,2, Jan Carmeliet1,2,3
1Chair of Building Physics, ETH Zürich, Zürich, Switzerland
2Laboratory for Urban Energy Systems, EMPA, Dübendorf, Switzerland
3Laboratory for Multiscale Studies in Building Physics, EMPA, Dübendorf, Switzerland

Abstract: The increasing penetration of renewable nondispatchable electricity sources into urban energy systems is necessitating the adoption of novel storage technologies to facilitate the temporal matching of energy supply and demand. In this study, the feasibility of incorporating power-to-gas (P2G) technologies into decentralised energy systems is evaluated. While most P2G studies assess the concept for large-scale renewable installations, in this paper, we apply it as a storage option for a municipality at the district level. Optimization, using the energy hub method, is employed to compare several storage configurations, with a multi-objective approach minimizing both cost and carbon emissions. The results show that cost objective solutions prefer thermal energy storage in order to facilitate short-term power-to-heat storage. While emissions optimal solutions select P2G storage, as it is able to facilitate seasonal storage and maximize the utilization of installed renewables. However, this option comes at a high economic cost.
Pages: 1740 - 1749