Details zur Publikation

Kategorie Textpublikation
Referenztyp Buchkapitel
DOI 10.1109/EEM54602.2022.9921157
Titel (primär) Electrofuels from excess renewable electricity: costs, emissions, carbon use
Titel (sekundär) 18th International Conference on the European Energy Market, Ljubljana, Slovenia, 13-15 September 2022
Autor Millinger, M.; Tafarte, P.; Jordan, M. ORCID logo ; Meisel, K.; Thrän, D.
Quelle EEM
Erscheinungsjahr 2022
Department OEKON; BIOENERGIE
Band/Volume 2022
Seite von 1
Seite bis 6
Sprache englisch
Topic T5 Future Landscapes
Keywords Renewable energy sources; Costs; Oils; Hydroge; Green products; Carbon dioxide; Production
Abstract Large shares of variable renewable electricity (VRE) generation are pursued in order to achieve emissions targets in the energy sectors. This results in increased excess renewable electricity (ERE) at times when supply exceeds conventional inflexible electricity demand. ERE can be utilized as a low-emission energy source for sector coupling through e.g. hydrogen production via flexible electrolysis, Which can be used directly or combined With a carbon source to produce electrofuels. Such fuels are crucial for the transport sector, where renewable alternatives are scarce. However, while ERE increases With raising VRE shares, carbon emissions decrease and may become a limited resource with several usage options, including carbon storage (CCS). Here We perform a model based analysis for the German case until 2050, with a general analysis for regions with a high VRE reliance. The capital expenditure of electrolysers was found not to be crucial for the cost, despite low capacity factors due to variable ERE patterns. Carbon will likely become a limiting factor when aiming for stringent climate targets and renewable electricity-based hydrocarbon electrofuels replacing fossil fuels achieve up to 70% more greenhouse gas (GHG) abatement than CCS. Given (1) an unsaturated demand for renewable hydrocarbon fuels, (2) a saturated renewable hydrogen demand and (3) unused ERE capacities which would otherwise be curtailed, we find that carbon used for renewable fuel production abates more GHG than if the carbon would be stored. This effect may increase substantially if shale oil or gas is displaced.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=26122
Millinger, M., Tafarte, P., Jordan, M., Meisel, K., Thrän, D. (2022):
Electrofuels from excess renewable electricity: costs, emissions, carbon use
18th International Conference on the European Energy Market, Ljubljana, Slovenia, 13-15 September 2022
EEM 2022
Institute of Electrical and Electronics Engineers (IEEE), New York, NY, p. 1 - 6 10.1109/EEM54602.2022.9921157