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Cost-Effectiveness of Carbon Emission Abatement Strategies for a Local Multi-Energy System—A Case Study of Chalmers University of Technology Campus

Journal article
Authors N Alavijeh
D Steen
Zack Norwood
L A Tuan
C Agathokleous
Published in Energies
Volume 13
Issue 7
Pages 23
ISSN 1996-1073
Publication year 2020
Published at Department of Earth Sciences
Pages 23
Language en
Links https://doi.org/10.3390/en13071626
Keywords multi-energy systems; local energy management systems; multi-objective optimization; rolling time-horizon; emission abatement strategies; distributed energy systems
Subject categories Social and Economic Geography, Settlement studies, Climate Research, Energy Systems, Energy Engineering, Electric power engineering

Abstract

This paper investigates the cost-effectiveness of operation strategies which can be used to abate CO 2 emissions in a local multi-energy system. A case study is carried out using data from a real energy system that integrates district heating, district cooling, and electricity networks at Chalmers University of Technology. Operation strategies are developed using a mixed integer linear programming multi-objective optimization model with a short foresight rolling horizon and a year of data. The cost-effectiveness of different strategies is evaluated across different carbon prices. The results provide insights into developing abatement strategies for local multi-energy systems that could be used by utilities, building owners, and authorities. The optimized abatement strategies include: increased usage of biomass boilers, substitution of district heating and absorption chillers with heat pumps, and higher utilization of storage units. The results show that, by utilizing all the strategies, a 20.8% emission reduction can be achieved with a 2.2% cost increase for the campus area. The emission abatement cost of all strategies is 36.6–100.2 (€/tCO 2 ), which is aligned with estimated carbon prices if the Paris agreement target is to be achieved. It is higher, however, than average European Emission Trading System prices and Sweden’s carbon tax in 2019.

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