Cost Comparisons for Emerging Carbon Dioxide Removal Technologies
This paper develops a techno-economic framework for comparing alternative carbon dioxide removal (CDR) technologies. The key financial cost metric emerging from our framework is …
Philip Holler
Doctoral Candidate
Biography
I am a doctoral candidate at the University of Mannheim and a researcher at
the Mannheim Institute for Sustainable Energy Studies (MISES). I combine
techno-economic analysis with carbon accounting to study the economics of
decarbonization technologies, emission allocation effects and the investment
incentives it shapes. I have held visiting positions at the Stanford
Graduate School of Business and the Toulouse School of Management. My
research has been published in Energy & Environmental Science and Nature
Communications.
Research interests
Economics of decarbonization technologies
Green hydrogen
Carbon accounting and investment incentives
Carbon removal portfolios
Data center decarbonization
Education
Doctoral Candidate
2021 – Present
University of Mannheim (GESS / CDSB)
Visiting Doctoral Student
01/2026 – 03/2026
Stanford University, Graduate School of Business
Visiting Doctoral Student
06/2024 – 08/2024
Université Toulouse Capitole, Toulouse School of Management
M.Sc. Management
2018 – 2021
University of Mannheim · Semester abroad at ESEADE Buenos Aires, Argentina (2019)
B.Sc. Business Administration
2014 – 2017
University of Mannheim · Semester abroad at UQAM Montréal, Canada (2016)
Research
My research combines techno-economic analysis with accounting to study how firms and economies can decarbonize at the lowest cost. That includes:
- Economics of decarbonization technologies. Assessing the cost, efficiency, and competitiveness of emerging climate technologies, such as electrolytic (“green”) hydrogen and carbon removal technologies.
- Carbon accounting and investment incentives. How alternative carbon accounting rules shape firms’ production and investment decisions.
- Carbon removal portfolios. Comparing carbon removal pathways over time and designing cost-effective, dynamic removal portfolios.
Happy to chat about any related question!
Selected papers
How Carbon Accounting Rules Shape Incentives for Hydrogen Production
Governments around the world have recently adopted policy support programs for hydrogen, tying the level of support to the assessed carbon intensity of the hydrogen produced. Here …
Advances in power-to-gas technologies: cost and conversion efficiency
Widespread adoption of hydrogen as an energy carrier is commonly believed to require continued advances in power-to-gas (PtG) technologies. Here we provide a comprehensive …
Further papers
(2026).
Dynamic Negative Emissions Portfolios under Paris-Aligned Removal Targets.
Working paper.
(2026).
A Comparative Rating Framework for Carbon Removal Credits.
Working paper.