Dr. Julia Grübel

Postdoctoral Researcher

Department Liberal Arts and Social Sciences
Analytics and Optimization Lab

Ulmenstraße 52 h EG
90443 Nürnberg
Deutschland

 

 

About

Julia Grübel holds a M.Sc. in Mathematics with a focus on Modeling, Simulation, and Optimization as well as a B.Sc. in Business Mathematics from the Friedrich-Alexander-Universität Erlangen-Nürnberg. She received her Doctorate in Mathematics from the Trier University in 2021. From January 2022 to February 2024, she worked as a postdoctoral researcher at the Chair of Economic Theory at the Friedrich-Alexander-Universität Erlangen-Nürnberg. Since March 2024, she is part of the Energy Systems and Market Design Lab at the University of Technology Nuremberg. Her research interests include general equilibrium problems and their applications to energy markets.

 

Education

2016–2021 Dr. rer. nat. in Mathematics, Trier University
2011–2014 M. Sc. in Mathematics (Modeling, Simulation and Optimization), FAU Erlangen-Nürnberg
2008–2012 B. Sc. in Business Mathematics, FAU Erlangen-Nürnberg

 

Academic Positions

Since 9/2024 Postdoctoral Researcher at the Analytics and Optimization Lab, UTN
3/2024–8/2024 Postdoctoral Researcher at the Energy Systems and Market Design Lab, UTN
1/2022–2/2024 Head of Research Area “Methods for Energy Market Analysis” at the Chair of Economic Theory at FAU Erlangen-Nürnberg
7/2018–3/2021 Doctoral researcher in the project “Energy Market Design” at EnCN
10/2016–6/2018
4/2021–12/2021		 Doctoral researcher in the subproject B08 “Multilevel mixed-integer nonlinear optimization for gas markets” within SFB TRR 154
4/2015–12/2016 Doctoral researcher in the project “Smart Grid Solar” at ZAE Bayern

 

Publications

2024 V. Grimm, JG, M. Schmidt, A. Schwartz, G. Zöttl, A.-K. Wiertz
On a tractable single-level reformulation of a multilevel model of the European entry-exit gas market with market power
Accepted in Journal of Global Optimization
2023 JG, R. Krug, M. Schmidt, W. Wollner
A successive linear relaxation method for MINLPs with multivariate Lipschitz continuous nonlinearities
Journal of Optimization Theory and Applications
2023 JG, O. Huber, L. Hümbs, M. Klimm, M. Schmidt, A. Schwartz
Nonconvex equilibrium models for energy markets: Exploiting price information to determine the existence of an equilibrium
Optimization Methods and Software
2022 J. Egerer, V. Grimm, JG, G. Zöttl
Long-run market equilibria in coupled energy sectors: A study of uniqueness
European Journal of Operational Research
2022 JG
Existence, uniqueness, and algorithms for equilibria in competitive energy markets
Dissertation
2020 V. Grimm, JG, B. Rückel, C. Sölch, G. Zöttl
Storage investment and network expansion in distribution networks: The impact of regulatory frameworks
Applied Energy
2020 JG, T. Kleinert, V. Krebs, G. Orlinskaya, L. Schewe, M. Schmidt, J. Thürauf
On electricity market equilibria with storage: Modeling, uniqueness, and a distributed ADMM
Computers & Operations Research
2019 V. Grimm, JG, L. Schewe, M. Schmidt, G. Zöttl
Nonconvex equilibrium models for gas market analysis: Failure of standard techniques and alternative modeling approaches
European Journal of Operational Research

 

Talks

2024 OR, ISMP: Adjustable robust nonlinear network design under demand uncertainties

EURO: On a tractable single-level reformulation of a multilevel model of the European entry-exit gas market with market power
2023 Optimization: Robust network design for nonlinear potential-based flows
2022 EURO: A decomposition method for MINLPs with multivariate Lipschitz continuous nonlinearities

Workshop of working group “OR for Environmental Protection”: The impact of different regulatory frameworks in coupled energy sectors on long-run investment incentives

FGP Conference on Optimization: Nonconvex equilibrium models for energy markets: Exploiting price information to determine the existence of an equilibrium
2021 OR, IFORS: On the existence of energy market equilibria with convex and nonconvex players

EURO: Long-run market equilibria in coupled energy sectors

Trends in Mathematical Modelling, Simulation and Optimisation: Theory and Applications: Existence of equilibria in energy markets with convex and nonconvex players
2020 ALOP-Colloquium Trier University: On electricity market equilibria with storage: Modeling, uniqueness, and a distributed ADMM
2018 iSEneC: Modeling inefficiencies in booking-based gas markets

EURO: Computational analysis of market designs for smart grid implementation

ISMP: Nonconvex equilibrium models for gas market analysis
2017 IFORS: Welfare optimal nominations in passive gas networks and associated equilibria
2016 iSEneC: Distribution network modeling in electricity market environment

 

Teaching

WS 22/23 – SS 24 Game Theory (lecture, exercise class, administration)
SS 20 – WS 20/ 21 Microeconomics (exercise class, administration)
SS 16, 17, 18, 22, 23, 24 Seminar energy markets (term paper supervision)
WS 15/16 – SS 17
SS 18 – WS 19/20		 Microeconomics (exercise class)
Since SS 14 Supervision of Bachelor, Project, and Master theses

 

Awards

2022   Hermann-Gutmann-Preis für besondere wissenschaftliche Leistungen (FAU Erlangen-Nürnberg) for the paper “Long-run market equilibria in coupled energy sectors: A study of uniqueness”
2019   Hermann-Gutmann-Preis für besondere wissenschaftliche Leistungen (FAU Erlangen-Nürnberg) for the paper “Nonconvex equilibrium models for gas market analysis: Failure of standard techniques and alternative modeling approaches”