At the Young Energy Economists and Engineers Seminar (YEEES), young researchers from all over Europe presented their current work. The event focused on key questions of the energy transition. For the first time, YEEES took place in Cologne.
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PhD students from across Europe: YEEES held in Cologne for the first time
On October 9 and 10, 2025, the Young Energy Economists and Engineers Seminar (YEEES) was held in Cologne for the first time. PhD students from across Europe were hosted by the EWI and the University of Cologne. The participants presented their current research projects, received feedback from senior reviewers, and exchanged ideas on technical and methodological aspects.
The discussions focused on topics such as uncertainty and market power in energy markets, the decarbonization of transport and industry, and flexibility options for integrating renewable energy. Researchers from the EWI also presented their work: Pia Hoffmann-Willers presented her joint research with Julian Keutz and Amir Ashour Novirdoust on optimized bidding strategies of renewable energy producers in sequential electricity markets. The seminar thus highlighted the diversity and depth of current energy economics research across various disciplines.
Gaining insights and building networks
In addition to the intensive discussions, the program also included cultural activities: a guided tour through Ehrenfeld with stops such as the 4711 House and the Helios Lighthouse offered participants the opportunity to get to know Cologne beyond the seminar room. During the subsequent joint dinner at the EWI, participants continued their discussions about research, energy policy, and future collaborations.
“The exchange with other researchers is crucial to advancing scientific knowledge. YEEES is specifically aimed at young researchers and offers them the opportunity to present their work, discuss it with peers and experienced scholars, and gain new perspectives,” said Jun.-Prof. Dr. Oliver Ruhnau in his opening speech.
EWI’s Executive Manager Research & Consulting, Sylwia Bialek-Gregory, Ph.D., emphasized: “Events like this highlight how valuable exchange and collaboration are. Today, as participants, you are working on scientific solutions for the energy transition – tomorrow, many of you will be actively shaping it in policy or business. The networks you build here will accompany you for many years and help facilitate the transfer of knowledge between research and practice.”
What is YEEES?
The Young Energy Economists and Engineers Seminar (YEEES) has for many years brought together young researchers from the fields of energy economics and engineering. Its goal is to promote interdisciplinary exchange, discuss research projects, and enable constructive feedback.