Project
TrU-5
Multi-Objective Optimization for Sustainable Energy System Planning
Project Heads
Thorsten Koch, Janina Zittel
Project Members
Stephanie Riedmüller
Project Duration
01.11.2023 − 31.03.2025
Located at
ZIB
Description
The goal to decarbonize the heating sector has led to an intensified focus on district heating networks. In a cooperation of the EnergyLab of the MODAL Research Campus and Berlin’s district heating provider BEW Berliner Energie und Wärme AG, we aim to explore different transformation pathways to achieve decarbonization targets in district heating networks while ensuring economic viability. The main target is to research and implement a method for integrated long-term planning of multi-energy systems considering multiple objectives.
Currently available industrial tools and academic models do not meet the long-term investment planning requirements of energy providers in complex urban networks such as Berlin. We introduce a mixed-integer programming model class fit for multi-energy systems of large urban scales and explore various algorithms to deal with the inherent size and complexity. This model class is based on a network flow problem integrating unit commitment and investment planning, which results in a time coupling over all time steps and a dense feasible space.
While solving large energy models is already difficult to achieve, including multiple objectives even increases efficiency issues. Computing the whole Pareto front is not possible in those cases. The resulting tool DHOT will compute a relevant subset of the Pareto front to provide a solution catalog with optimal and relevant trade-offs and to distinguish between robust- and target-dependent investments. We provide decision-makers with a suitable solution catalog to guide the transition into a low-carbon future.
Project Webpages
Related Publications
Clarner, Tawfik, Koch, Zittel: Network-induced Unit Commitment – A model class for investment and production portfolio planning for multi-energy systems, ZIB-Report, 2022.
Zittel, Clarner, Tawfik, Dykes, Rivetta, Riedmüller: A multi-objective optimization strategy for district heating production portfolio planning, Proceedings of the 37th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, accepted.
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