Techno-economic implications of the electrolyser technology and size for power-to-gas systems

摘要

Power-to-gas (P2G) is a modular technology which offers several benefits to different types of networks and sectors while playing the role of mid-term and long-term energy storage. The core element of a P2G plant is the electrolyser which transforms low cost and/or renewable electricity into hydrogen. A thorough analysis of the implications of selecting an electrolyser technology (namely alkaline or PEM) and scale is key for understanding the performance and economic benefits of P2G plants generating hydrogen or methane.