Projecting cost development for future large-scale power-to-gas implementations by scaling effects

Hans Böhm, Andreas Zauner, Daniel C. Rosenfeld and Robert Tichler

Applied Energy, 2020, vol. 264, issue C, No S0306261920302920

Abstract: Power-to-gas (PtG) is widely expected to play a valuable role in future renewable energy systems. In addition to partly allowing a further utilization of the existing gas infrastructure for energy transport and storage, hydrogen or synthetic natural gas (SNG) from electric power represents a high-density energy carrier and important feedstock material for further processing. This premise leads to a significant demand for large-scale PtG plants, which was evaluated with an amount of up to 4530 GWel for electrolysis and up to 1360 GWSNG for methanation capacities at a global scale. Together with the upscaling of single-MW plants available today, this will enable to achieve appropriate cost reduction effects through technological learning. Under given scenarios, reduction potentials for CAPEX of >75% are expected for multi-MW PtG plants in the long-term, with significant advantages of PEM and solid oxide electrolysis over alkaline systems in the short- and mid-term. The resulting effects on PtG product costs were evaluated via a holistic techno-economic assessment, resulting in SNG production costs of 15 €-cent/kWh and below for large-scale appliances in 2050, depending on the renewable electricity supply.

Keywords: Power-to-gas; Electrolysis; Methanation; Scaling effects; Technological learning (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (45)

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DOI: 10.1016/j.apenergy.2020.114780

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