Browsing by Author "Klingler, Anna-Lena"

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Open Access
Hydrogen micro-systems : households’ preferences and economic futility
(2024) Klingler, Anna-Lena; Dörr, Julian
This study examines the potential market for residential hydrogen systems in light of the trends towards digitalisation and environmental awareness. Based on a survey of 350 participants, the results indicate that although energy experts are sceptical about the benefits of residential hydrogen systems due to their high costs, households are highly interested in this technology. The sample shows a willingness to invest in hydrogen applications, with some households willing to pay an average of 24% more. An economic assessment compared the cost of a residential hydrogen system with conventional domestic energy systems, revealing significant additional costs for potential buyers interested in hydrogen applications.
Open Access
Integrated modelling of decentralised energy supply in combination with electric vehicle charging in a real-life case study
(2021) Göhler, Georg; Klingler, Anna-Lena; Klausmann, Florian; Spath, Dieter
Intelligent integration of decentralised energy resources, local storage and direct consumption are key factors in achieving the transformation of the energy system. In this study, we present a modular simulation concept that allows the planning of decentralised energy systems for buildings and building blocks. In comparison to related studies, we use a simulation model for energy planning with a high time-resolution from the perspective of the energy system planner. In this study, we address the challenges of the grid connection in combination with an increasing number of electric vehicles (EV) in the future. The here developed model is applied for an innovative building block in Germany with a photovoltaic (PV) system, a combined heat and power (CHP) unit, battery storage and electric vehicles. The results of the simulation are validated with real-life data to illustrate the practical relevance and show that our simulation model is able to support the planning of decentralised energy systems. We demonstrate that without anticipating future electric vehicle charging, the system configurations could be sub-optimal if complete self-sufficiency is the objective: in our case study, the rate of self-sufficiency of the net-zero energy building will be lowered from 100% to 91% if considering electric vehicles. Furthermore, our simulation shows that a peak minimising operation strategy with a battery can prevent grid overloads caused by EV charging in the future. Simulating different battery operation strategies can further help to implement the most useful strategy, without interruption of the current operation.
Open Access
Netzbelastungen und Netzdienstleistungen durch Elektrofahrzeuge : Metastudie
(Stuttgart : Universität Stuttgart, Institut für Arbeitswissenschaft und Technologiemanagement, 2019) Göhler, Georg; Schmaus, Claudio; Klingler, Anna-Lena