Philip Holler

Philip Holler

Doctoral Candidate

University of Mannheim

Mannheim Institute for Sustainable Energy Studies

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.
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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 interests

Economics of decarbonization technologies Carbon accounting and investment incentives Carbon removal portfolios Data center decarbonization
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 featured image
Carbon Accounting

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 …

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The Economics of Emerging Carbon Dioxide Removal Technologies featured image
Carbon Dioxide Removal

The Economics of 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 …

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Advances in power-to-gas technologies: cost and conversion efficiency featured image
Green Hydrogen

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 …

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Further papers
Philip Holler, Thimo Merke (2026). Dynamic Negative Emissions Portfolios under Paris-Aligned Removal Targets. Working paper.
Philip Holler (2026). A Comparative Rating Framework for Carbon Removal Credits. Working paper.