Future cost and performance of water electrolysis: An expert elicitation study

The need for energy storage to balance intermittent and inflexible electricity supply with demand is driving interest in conversion of renewable electricity via electrolysis into a storable gas. But, high capital cost and uncertainty regarding future cost and performance improvements are barriers to investment in water electrolysis. Expert elicitations can support decision-making when data are sparse and their future development uncertain. Therefore, this study presents expert views on future capital cost, lifetime and efficiency for three electrolysis technologies: alkaline (AEC), proton exchange membrane (PEMEC) and solid oxide electrolysis cell (SOEC). Experts estimate that increased R&D funding can reduce…

• IC
  Imperial College London
• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/I501053/1, EP/K503733, EP/K503733/1, K503733/1
• EA
  Economic and Social Research Council

  Award: ES/M500562/1