Sascha Lehmann - Fraunhofer ISI

Researcher

Since 2018, Sascha Lehmann has been working as a researcher and PhD candidate in the Business Unit Climate Policy within the Department of Energy Policy and Energy Markets. His work focuses on the evaluation of targets and instruments of climate policy on the European and national level, but also on the analysis of emission abatement options of individual sectors. In particular, he works on the European Emissions Trading System, the Effort Sharing Regulation or the German National Fuel Emission Trading System. He works in projects related to the international, EU or national context.

Sascha Lehmann studied economics with a focus on empirical economic research, econometrics and social policy at the Albert-Ludwigs-University of Freiburg. He graduated with a diploma in 2012. From 2013 to 2017, he was a consultant at Stuewe Management Consulting in Cologne.

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Projects
Support study for the preparation of energy efficiency benchmarks in the context of the Revised ETS State aid Guidelines (DG COMP)

Support study for possible extension of the EU Emissions Trading System (ETS) to cover emissions from the use of fossil fuels in particular in the road transport and the buildings sector (DG ClimA)

Support study for potential and renewable evidence of RFNBOs (DG ENER)

Support to UNECE Pathways to Sustainable Energy Project
https://unece.org/sustainable-energy/pathways-sustainable-energy

Structural development of the EU Emissions Trading Scheme from an economic perspective for the post-2020 period (DEHSt)

Strategien von Unternehmen und Erfolgsfaktoren im EU Emissionsrechtehandel (sef-bw)
Publications (selection)
Cludius, J.; Hermann, H.; Matthes, F. C.; Eckstein, J.; Lehmann, S. (2025): Umsetzung des Preiskorridors im nationalen Emissionshandel (nEHS) im Jahr 2026. https://doi.org/10.60810/openumwelt-8010

Lehmann, S.; Schleich, J. (2025): Does increasing auctioning in the EU ETS increase companies' search efforts for favourable trading options? In: Journal of Environmental Management, 387, p. 125830. https://doi.org/10.1016/j.jenvman.2025.125830.

Lehmann, S.; Schleich, J.; Pinkse, J. (2024): Allocation or Skill? What is Driving Corporate Trading Performance in the EU ETS? In: The Energy Journal. https://doi.org/10.1177/01956574241288994.

Jörling, K.; Klessmann, C.; Schröder, J.; Lehmann, S.; Wachsmuth, J. (2023): Technical assistance to assess the potential of renewable liquid and gaseous transport fuels of non-biological origin (RFNBOs) as well as recycled carbon fuels (RCFs), to establish a methodology to determine the share of renewable energy from RFNBOs as well as to develop a framework on additionality in the transport sector. Final report, Task 3: Develop a framework on additionality in the EU transport sector. Publications Office of the European Union. https://data.europa.eu/doi/10.2833/343088

Schröder, J.; Cihlar, J.; Munzel, B.; Jörling, K.; Klessmann, C.; Geipel, J.; Schöniger, F.; Resch, G.; Eckstein, J.; Höfling, H.; Lehmann, S.; Wachsmuth, J. (2023): Technical assistance to assess the potential of renewable liquid and gaseous transport fuels of non-biological origin (RFNBOs) as well as recycled carbon fuels (RCFs), to establish a methodology to determine the share of renewable energy from RFNBOs as well as to develop a framework on additionality in the transport sector. Final report, Task 2: Methodology to determine the share of renewable energy. Publications Office of the European Union. https://data.europa.eu/doi/10.2833/031728

Graichen, V.; Cludius, J.; Duscha, V.; Graichen, J.; Haller, M.; Hermann, H.; Keimeyer, F.; Lehmann, S.; Loreck, C.; Wachsmuth, J.; Zaklan, A. (2022): Strukturelle Weiterentwicklung des EU-ETS nach 2020. In: Climate Change (18/2022). Dessau-Roßlau: Umweltbundesamt.

Kantamaneni, R.; Verstraeten, Y.; Kuzov, T.; Lehmann, S.; Eckstein, J. (2021): Support study for the preparation of energy efficiency benchmarks in the context of the Revised ETS State Aid Guidelines. Final Report. ICF; Fraunhofer ISI. DOI: 10.2763/284129

CITEPA; European Commission (EC); Eclareon; Ecologic; Enerdata; Fraunhofer Institute for Systems and Innovation Research ISI; ICF; Milieu (2020): Possible extension of the EU Emissions Trading System (ETS) to cover emissions from the use of fossil fuels in particular in the road transport and the buildings sector. Online verfügbar unter https://op.europa.eu/en/publication-detail/-/publication/f496ee25-353a-11ec-bd8e-01aa75ed71a1/language-en/format-PDF/source-239978809. DOI: 10.2834/779201

Abrell, J.; Cludius, J.; Lehmann, S.; Schleich, J.; Betz, R. (2021): Corporate Emissions-Trading Behaviour During the First Decade of the EU ETS. In: Environmental and Resource Economics. DOI: 10.1007/s10640-021-00593-7

Schleich, J.; Lehmann, S.; Cludius, J.; al, e. (2020): Active or passive? Companies’ use of the EU ETS (Working Paper Sustainability and Innovation S 07/2020). Karlsruhe: Fraunhofer ISI.

Obergassel, W.; Kreibich, N.; Wang-Helmreich, H.; Füssler, J.; Kohli, A.; Oberpriller, Q. et al. (2020): Design Options for the New International Market Mechanism under Article 6.4 of the Paris Agreement (Climate Change 39/2020). Dessau-Roßlau: Umweltbundesamt.

Publications (comprehensive list)

Jahr Year	Titel/Autor:in Title/Author	Publikationstyp Publication Type
2025	Exploring internal trading in the EU emissions trading system: An empirical analysis Lehmann, Sascha; Schleich, Joachim	Zeitschriftenaufsatz Journal Article
2025	Does increasing auctioning in the EU ETS increase companies' search efforts for favourable trading options? Lehmann, Sascha; Schleich, Joachim	Zeitschriftenaufsatz Journal Article
2025	Umsetzung des Preiskorridors im nationalen Emissionshandel (nEHS) im Jahr 2026 Cludius, Johanna; Hermann, Hauke; Matthes, Felix C.; Eckstein, Johannes; Lehmann, Sascha	Bericht Report
2024	Catalyzing the transition to a climate-neutral industry with carbon contracts for difference Richstein, Jörn C.; Anatolitis, Vasilios; Blömer, Robin; Bunnenberg, Lennart; Dürrwächter, Jakob; Eckstein, Johannes; Ehrhart, Karl-Martin; Friedrichsen, Nele; Köveker, Till; Lehmann, Sascha; Lösch, Oliver; Matthes, Felix Christian; Neuhoff, Karsten; Niemöller, Paula; Riemer, Matia; Ueckerdt, Falko; Wachsmuth, Jakob; Wang, Runxi; Winkler, Jenny	Zeitschriftenaufsatz Journal Article
2024	Dekarbonisierung der industriellen Produktion (DekarbInd) - Teilbericht 2: Erarbeitung von Eckpunkten für die Dekarbonisierung der Stahlindustrie Aydemir, Ali; Warnke, Philine; Lehmann, Sascha; Arens, Marlene	Bericht Report
2024	Allocation or Skill? What is Driving Corporate Trading Performance in the EU ETS? Lehmann, Sascha; Schleich, Joachim; Pinkse, Jonatan	Zeitschriftenaufsatz Journal Article
2023	Direct Air Carbon Capture and Storage. A game changer in climate policy? Breitschopf, Barbara; Dütschke, Elisabeth; Duscha, Vicki; Haendel, Michael; Hirzel, Simon; Kantel, Anne; Lehmann, Sascha; Marscheider-Weidemann, Frank; Riemer, Matia; Tröger, Josephine; Wietschel, Martin	Bericht Report
2023	Direct Air Carbon Capture and Storage. Ein Gamechanger in der Klimapolitik? Breitschopf, Barbara; Dütschke, Elisabeth; Duscha, Vicki; Haendel, Michael; Hirzel, Simon; Kantel, Anne; Lehmann, Sascha; Marscheider-Weidemann, Frank; Riemer, Matia; Tröger, Josephine; Wietschel, Martin	Bericht Report
2023	National Energy and Climate Plans: Evidence of Policy Impacts and Options for more Transparency Wachsmuth, Jakob; Alexander-Haw, Abigail; Billerbeck, Anna; Breitschopf, Barbara; Brunzema, Iska; Berger, Carmen; Lehmann, Sascha; Panny, Julia; Rohde, Clemens; Zheng, Lin; Velten, Eike K.; Duin, Laurens	Bericht Report
2022	Technical assistance to assess the potential of renewable liquid and gaseous transport fuels of non-biological origin (RFNBOs) as well as recycled carbon fuels (RCFs), to establish a methodology to determine the share of renewable energy from RFNBOs as well as to develop a framework on additionality in the transport sector Jörling, Korinna; Klessmann, Corinna; Schröder, Jonas; Lehmann, Sascha; Wachsmuth, Jakob	Bericht Report
2022	Corporate emissions-trading behaviour during the first decade of the EU ETS Abrell, Jan; Cludius, Johanna; Lehmann, Sascha; Schleich, Joachim; Betz, Regina	Zeitschriftenaufsatz Journal Article
2022	Technical assistance to assess the potential of renewable liquid and gaseous transport fuels of non-biological origin (RFNBOs) as well as recycled carbon fuels (RCFs), to establish a methodology to determine the share of renewable energy from RFNBOs as well as to develop a framework on additionality in the transport sector Schröder, Jonas; Cihlar, Jan; Munzel, Benjamin; Jörling, Korinna; Klessmann, Corinna; Geipel, Jasper; Schöniger, Franziska; Resch, Gustav; Eckstein, Johannes; Höfling, Holger; Lehmann, Sascha; Wachsmuth, Jakob	Bericht Report
2022	Strukturelle Weiterentwicklung des EU-ETS nach 2020. Abschlussbericht Graichen, Verena; Cludius, Johanna; Graichen, Jakob; Haller, Markus; Hermann, Hauke; Keimeyer, Friedhelm; Loreck, Charlotte; Lehmann, Sascha; Duscha, Vicki; Wachsmuth, Jakob; Zaklan, Aleksandar	Bericht Report
2021	Revision der EU-Klimaschutz-Verordnung. Zusammenfassung Duscha, Vicki; Lehmann, Sascha; Ittner, Sophie	Bericht Report
2021	Support study for the preparation of energy efficiency benchmarks in the context of the Revised ETS State Aid Guidelines Kantamaneni, Ravi; Kuzov, Teodor; Verstraeten, Yann; Lehmann, Sascha; Eckstein, Johannes	Bericht Report
2020	Bewertung der Aufnahme mittelständischer Betriebe in den Europäischen Emissionshandel vor dem Hintergrund der Einführung des nationalen Emissionshandels. Abschlussbericht Lehmann, Sascha; Duscha, Vicki	Bericht Report
2020	Ausgewählte Studien zur CO2-Intensität von langlebigen Produkten im Vergleich zu kurzlebigen Produkten über den gesamten Lebenszyklus. Abschlussbericht Lehmann, Sascha; Duscha, Vicki	Bericht Report
2020	Design options for the new international market mechanism under Article 6.4 of the Paris Agreement Obergassel, Wolfgang; Kreibich, Nicolas; Wang-Helmreich, Hanna; Füssler, Jürg; Kohli, Anik; Oberpriller, Quirin; Weber, Felix; Wunderlich, Alexander; Wachsmuth, Jakob; Denishchenkova, Alexandra; Duscha, Vicki; Lehmann, Sascha; Arens, Marlene	Bericht Report
2020	Active or passive? Companies' use of the EU ETS Schleich, Joachim; Lehmann, Sascha; Cludius, Johanna; Tu, Gengyang; Abrell, Jan; Betz, Regina; Pinkse, Jonatan	Bericht Report
2019	Benchmarks to determine baselines for mitigation action under the Article 6.4 mechanism Füssler, Jürg; Oberpriller, Quirin; Duscha, Vicki; Lehmann, Sascha; Arens, Marlene	Bericht Report
2019	Options for fostering increasing ambition levels under the Paris Article 6.4 mechanism Füssler, Jürg; Kohli, Anik; Lehmann, Sascha; Kreibich, Nicolas; Obergassel, Wolfgang	Bericht Report
2019	Evaluierung und Weiterentwicklung des EU-Emissionshandels aus ökonomischer Perspektive für die Zeit nach 2020 (EU-ETS-7) Graichen, Verena; Förster, Hannah; Graichen, Jakob; Healy, Sean; Repenning, Julia; Schumacher, Katja; Duscha, Vicki; Friedrichsen, Nele; Lehmann, Sascha; Erdogmus, Gizem; Haug, Ines; Kim, Solbin; Zaklan, Aleksandar; Diekmann, Jochen	Bericht Report
2019	Trading up. Ensuring that Article 6 promotes ambition in the Paris agreement Füssler, Jürg; Broekhoff, Derik; Kohli, Anik; Kreibich, Nicolas; Lehmann, Sascha; Spalding-Fecher, Randall	Zeitschriftenaufsatz Journal Article

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Researcher

Projects

Publications (selection)

Publications (comprehensive list)