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Exploring the feasibility of low-carbon fuel blends in CCGTs for deep decarbonization of power systems

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  • Anas Abuzayed
  • Michael G Pollitt
  • Mario Liebensteiner
  • Simone Hochgreb

Abstract

Retrofitting gas-fired power plants to accommodate low-carbon fuel blends offers a promising pathway to achieving deep decarbonization while leveraging the existing infrastructure and maintaining electricity supply reliability. This study presents a comprehensive techno-economic assessment of low-carbon fuel options for decarbonizing combined cycle gas turbines (CCGTs), evaluating both fuel switching and blending strategies using green hydrogen, green ammonia, and biomethane. We estimate capital investment requirements for retrofitting existing fleets and building new CCGT capacity in Germany and the UK, featuring a case study case of retrofitting a relatively new CCGT power plant (Keadby2 in the UK). Our findings reveal that retrofitting increases the levelized cost of electricity (LCOE) by about 6–13 €/MWh, with storage infrastructure representing a key cost driver. Fuel blending enhances operational flexibility but raises retrofitting costs. Biomethane emerges as the most cost-effective option due to its compatibility with existing infrastructure and negligible retrofitting needs, potentially cutting capital investments by up to €16.5 and €12 billion in Germany and the UK, respectively. However, even under the most favorable conditions, the marginal cost of electricity using low-carbon fuels exceeds 120 €/MWh, leaving natural gas more competitive at current market conditions. Strategic retrofitting decisions must be pursued selectively, considering plant age, proximity to fuel supply, and storage infrastructure. Policy frameworks ensuring simultaneous supply and infrastructure development are critical to realizing the potential of fuel blending and retrofitting strategies.
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  • Anas Abuzayed & Michael G Pollitt & Mario Liebensteiner & Simone Hochgreb, 2025. "Exploring the feasibility of low-carbon fuel blends in CCGTs for deep decarbonization of power systems," Working Papers EPRG2520, Energy Policy Research Group, Cambridge Judge Business School, University of Cambridge.
    • Handle: RePEc:enp:wpaper:eprg2520
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    1. Brändle, Gregor & Schönfisch, Max & Schulte, Simon, 2021. "Estimating long-term global supply costs for low-carbon hydrogen," Applied Energy, Elsevier, vol. 302(C).
    2. Newbery, David, 2016. "Missing money and missing markets: Reliability, capacity auctions and interconnectors," Energy Policy, Elsevier, vol. 94(C), pages 401-410.
    3. Vatankhah Ghadim, Hadi & Haas, Jannik & Breyer, Christian & Gils, Hans Christian & Read, E. Grant & Xiao, Mengzhu & Peer, Rebecca, 2025. "Are we too pessimistic? Cost projections for solar photovoltaics, wind power, and batteries are over-estimating actual costs globally," Applied Energy, Elsevier, vol. 390(C).
    4. Egerer, Jonas & Grimm, Veronika & Niazmand, Kiana & Runge, Philipp, 2023. "The economics of global green ammonia trade – “Shipping Australian wind and sunshine to Germany”," Applied Energy, Elsevier, vol. 334(C).
    5. Steffen, Bjarne, 2020. "Estimating the cost of capital for renewable energy projects," Energy Economics, Elsevier, vol. 88(C).
    6. M. Calcaterra & L. Aleluia Reis & P. Fragkos & T. Briera & H. S. Boer & F. Egli & J. Emmerling & G. Iyer & S. Mittal & F. H. J. Polzin & M. W. J. L. Sanders & T. S. Schmidt & A. Serebriakova & B. Stef, 2024. "Reducing the cost of capital to finance the energy transition in developing countries," Nature Energy, Nature, vol. 9(10), pages 1241-1251, October.
    7. Ken Oshiro & Shinichiro Fujimori, 2024. "Limited impact of hydrogen co-firing on prolonging fossil-based power generation under low emissions scenarios," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    8. Nazar, Roshna & Srinivasan, Shweta L. & Kanudia, Amit & Asundi, Jai, 2021. "Implication of emission regulation on cost and tariffs of coal-based power plants in India: A system modelling approach," Energy Policy, Elsevier, vol. 148(PB).
    9. Fasihi, Mahdi & Weiss, Robert & Savolainen, Jouni & Breyer, Christian, 2021. "Global potential of green ammonia based on hybrid PV-wind power plants," Applied Energy, Elsevier, vol. 294(C).
    10. Genc, Talat S., 2024. "Energy Transition and the role of new natural gas turbines for power production: The case of GT11N2 M generators," Energy Economics, Elsevier, vol. 131(C).
    11. Liebensteiner, Mario & Ocker, Fabian & Abuzayed, Anas, 2025. "High electricity price despite expansion in renewables: How market trends shape Germany’s power market in the coming years," Energy Policy, Elsevier, vol. 198(C).
    12. Skabelund, Brent B. & Stechel, Ellen B. & Milcarek, Ryan J., 2023. "Thermodynamic analysis of a gas turbine utilizing ternary CH4/H2/NH3 fuel blends," Energy, Elsevier, vol. 282(C).
    13. Schnellmann, M. & Chyong, C-K. & Reiner, D. & Scott, S., 2018. "Deploying gas power with CCS: The role of operational flexibility, merit order and the future energy system," Cambridge Working Papers in Economics 1868, Faculty of Economics, University of Cambridge.
    14. Tu, Yaojie & Zhang, Haiyang & Guiberti, Thibault F. & Avila Jimenez, Cristian D. & Liu, Hao & Roberts, William L., 2024. "Experimental and numerical study of combustion and emission characteristics of NH3/CH4/air premixed swirling flames with air-staging in a model combustor," Applied Energy, Elsevier, vol. 367(C).
    15. Liebensteiner, Mario & Wrienz, Matthias, 2020. "Do Intermittent Renewables Threaten the Electricity Supply Security?," Energy Economics, Elsevier, vol. 87(C).
    16. David Franzmann & Heidi Heinrichs & Felix Lippkau & Thushara Addanki & Christoph Winkler & Patrick Buchenberg & Thomas Hamacher & Markus Blesl & Jochen Lin{ss}en & Detlef Stolten, 2023. "Green Hydrogen Cost-Potentials for Global Trade," Papers 2303.00314, arXiv.org, revised May 2023.
    17. Sonja Renssen, 2020. "The hydrogen solution?," Nature Climate Change, Nature, vol. 10(9), pages 799-801, September.
    18. Abuzayed, Anas & Liebensteiner, Mario & Hartmann, Niklas, 2025. "Hydrogen-ready power plants: Optimizing pathways to a decarbonized energy system in Germany," Applied Energy, Elsevier, vol. 395(C).
    19. Malte Jansen & Iain Staffell & Lena Kitzing & Sylvain Quoilin & Edwin Wiggelinkhuizen & Bernard Bulder & Iegor Riepin & Felix Müsgens, 2020. "Offshore wind competitiveness in mature markets without subsidy," Nature Energy, Nature, vol. 5(8), pages 614-622, August.
    20. Guteša Božo, M. & Vigueras-Zuniga, MO. & Buffi, M. & Seljak, T. & Valera-Medina, A., 2019. "Fuel rich ammonia-hydrogen injection for humidified gas turbines," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
    21. Harris, Kylee & Grim, R. Gary & Huang, Zhe & Tao, Ling, 2021. "A comparative techno-economic analysis of renewable methanol synthesis from biomass and CO2: Opportunities and barriers to commercialization," Applied Energy, Elsevier, vol. 303(C).
    22. Tom Terlouw & Lorenzo Rosa & Christian Bauer & Russell McKenna, 2024. "Future hydrogen economies imply environmental trade-offs and a supply-demand mismatch," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    23. Béres, Rebeka & Nijs, Wouter & Boldrini, Annika & van den Broek, Machteld, 2024. "Will hydrogen and synthetic fuels energize our future? Their role in Europe's climate-neutral energy system and power system dynamics," Applied Energy, Elsevier, vol. 375(C).
    24. Vishal Ram & Surender Reddy Salkuti, 2023. "An Overview of Major Synthetic Fuels," Energies, MDPI, vol. 16(6), pages 1-35, March.
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    JEL classification:

    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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