Economic assessment of Power-to-Liquid processes—Influence of electrolysis technology and operating conditions
Open accessAbstract
Power-to-Liquid (PtL) processes are considered as a key technology for a fossil-free raw material and energy system. With multiple technical analyses being available and technical feasibility being proven by first pilot plants, pathways towards commercial market entry are of increasing interest. In this work multiple economic aspects of Power-to-Liquid plants are being investigated. First and foremost, the seamless integration of an economic analysis in the process modeling workflow will be demonstrated. This allows for an extensive investigation of the influence of operating conditions of the considered solid oxide electrolyzer (SOEL) on process economics and a subsequent optimization not only from an engineering standpoint but considering economics as well. Furthermore, the modular nature of the model allows for a comparison of SOEL to the more mature technology of low-temperature electrolysis with a focus on possible heat integration and by-product utilization. The potential of SOEL technology for high energetic efficiency and subsequently low production cost is highlighted. The conducted forecast to 2050 shows that SOEL-based Power-to-Liquid processes offer lower production cost of NPC = 0.203 €2020/kWhch compared to production cost of NPC = 0.262 €2020/kWhch for the PEMEL-based process. Furthermore, based on the results of the economic assessment possible governmental support mechanisms are studied, showing that projected values for governmental incentives are expected to decrease CO2 mitigation cost from κCO2 = 791 €2020/tCO2 to κCO2 = 419 €2020/tCO2 for the 2050 scenario. Thus, existing measures and currently discussed measures are not sufficient to ensure economic viability. Consequently, more extensive schemes such as mandatory quotas for sustainable PtL products need to be implemented in order to facilitate the market entry.
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SOEL is a recent, less developed technology compared with AEL and PEMEL, just now entering the market, but considered a more promising long-term option for carbon-neutrality pursuit.
“Solid oxide electrolysis (SOEL) is a recent, less developed technology when compared with AEL and PEMEL that is just now entering the market [83,85], but it is considered a more promising long-term option for carbon-neutrality pursuit [86].”
From Use of sustainable fuels in aviation: a review (2022) · cites this paper as [86]
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Use of sustainable fuels in aviation: a review
Cabrera, E., & de Sousa, J. M. M. (2022) · Energies · doi:10.3390/en15072440 · Cited by 217 · see citing works
- Authors
- Herz, G., Rix, C., Jacobasch, E., Müller, N., Reichelt, E., Jahn, M., & Michaelis, A.
- Affiliations
- Fraunhofer Institute for Ceramic Technologies and Systems (DE)
- Corresponding author
- Herz, Gregor
- Venue
- Applied Energy
- Publisher
- Elsevier BV
- Published
- 2021-06
- Volume
- 292
- Pages
- 116655
- ISSN
- 0306-2619 (ISSN-L)
- OpenAlex
- W3152822275
- Cited by
- 77
- References
- 69
- Citations by year
- 2026: 14 · 2025: 9 · 2024: 20 · 2023: 17 · 2022: 14 · 2021: 3
- FWCI
- 3.28
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Applied Energy (publishedVersion, cc-by-nc-nd)
- RePEc: Research Papers in Economics (submittedVersion)
- Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) (submittedVersion, other-oa)
- Fraunhofer-Publica (Fraunhofer-Gesellschaft) (submittedVersion)
- Funders
- Bundesministerium für Bildung und Forschung (03ZZ0741A)
- Deutsche Bundesstiftung Umwelt
- Topics
- Physical Sciences › Energy › Energy Engineering and Power Technology › Hybrid Renewable Energy Systems
- Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Integrated Energy Systems Optimization
- Keywords
- power-to-liquids, solid oxide electrolyzer, proton exchange membrane electrolyzer, low-temperature electrolysis, process economics, operating conditions, heat integration, by-product utilization, production costs, CO2 mitigation costs, government incentives, market entry, process modeling
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