Martin Weibelzahl

University of Bayreuth

An increasing number of renewable energy sources driven by ambitious sustainability efforts is both changing and challenging electricity systems worldwide. Successfully dealing with a variable and highly decentralized electricity supply associated with the rising share of renewable energy sources will be crucial in the near future. This paper inves...

The transition from fossil fuels to renewable energy sources poses major challenges for balancing increasingly weather-dependent power supply and demand. Although demand-side energy flexibility, offered particularly by industrial companies, is seen as a promising and necessary approach to address these challenges and realize benefits for companies,...

Information systems (IS) and digital technologies have significantly influenced human history, giving rise to numerous innovations and transformative changes in our daily lives. In particular, the exploration of how IS can address societal challenges constitutes a noteworthy focus within IS research. One of our greatest challenges at present is the...

Drivers of battery electric vehicles, especially along motorways, require fast-charging services and expect maximum charging power to overcome long servicing times. However, charging park operators cannot always meet customer expectations due to economic and technical restrictions. According to the expectation-disconfirmation theory, the resulting...

As electricity systems undergo a profound transformation characterized by decentralization and the emergence of millions of new electricity consumers, including electric vehicles and heat pumps, the complexity of modern electricity markets is on the rise. This development presents a unique opportunity for consumers to actively participate in electr...

The increasing share of renewable energy sources poses the challenge of volatile energy generation, requiring demand side management (DSM) to manage such volatility. In view of the high industrial electricity demand and the increasing charging demand of electric vehicles (EVs), both industry and mobility represent relevant areas of DSM. However, th...

Purpose The purpose of this paper is to examine how active consumers, i.e. consumers that can inter-temporally shift their load, can influence electricity prices. As demonstrated in this paper, inter-temporal load shifting can induce negative electricity prices, a recurring phenomenon on power exchanges. Design/methodology/approach The paper prese...

Das Ziel des vorliegenden Dokuments ist die Zusammenfassung von zentralen Erkenntnissen – im Folgenden als Lessons Learned bezeichnet –, die Energie- und Projektmanager:innen berücksichtigen sollten, um Unternehmen zielgerichtet zur ökonomischen Nutzung von Energieflexibilitätspotenzialen mittels Energieflexibilitätshandel zu befähigen. Für die Tei...

In this paper we analyze a uniform price day-ahead electricity spot market that is followed by redispatch in the case of network congestion. We assume that the transmission system operator is incentivized to minimize redispatch cost and compare cost-based redispatch (CBR) to market-based redispatch (MBR) mechanisms. For networks with at least three...

Various flexibility options in power systems, such as storage, grid expansion, and demand flexibility, gain increasing importance to balance the intermittent power supply of renewables. On the demand side, especially the industrial sector represents promising potential for Demand Response, i.e., the alignment of its power demand with the current po...

Um die Ziele des Pariser Klimaabkommens zu erreichen, besteht rascher Handlungsbedarf in allen Sektoren. Dies gilt insbesondere für den Verkehrssektor, für den eine umfassende Transformation unumgänglich ist. Aktuelle Forschungsarbeiten zeigen, dass neben der Elektrifizierung des motorisierten Individualverkehrs insbesondere der Ausbau und die Umse...

In the course of the energy transition, flexibility on the demand side is crucial to balance intermittent supply from renewable energy sources. In Germany, however, a large part of the demand side flexibility potential remains unused, especially due to an outdated and inappropriate grid charges regulation. In this respect, policymakers have failed...

Indonesia's current energy policy, which relies on cheap fossil fuels and focuses on two out of the three horns of the energy trilemma, namely, energy security and energy equity, may impede its efforts to higher shares of renewable energy sources. This paper develops three generic models that allow policymakers to analyze the impact of introducing...

The ongoing energy transition increases the share of renewable energy sources. To combat inherent intermittency of RES, increasing system flexibility forms a major opportunity. One way to provide flexibility is demand response (DR). Research already reflects several approaches of artificial intelligence (AI) for DR. However, these approaches often...

In 2020, Germany reached a maximum share of 50.5% intermittent renewables in electricity generation. Such a high share results in an increasing need for flexibility measures such as international transmission flexibility, i.e., electricity imports and exports. In fact, during the COVID-19 pandemic, Germany changed from a former electricity net expo...

Europe’s clean energy transition is imperative to combat climate change and represents an economic opportunity to become independent of fossil fuels. As such, the energy transition has become one of the most important, but also one of the most challenging economic and societal projects today. Electricity systems of the past were characterized by pr...

In course of the energy transition, the growing share of Renewable Energy Sources (RES) makes electricity generation more decentralized and intermittent. This increases the relevance of exploiting flexibility potentials that help balancing intermittent RES supply and demand and, thus, contribute to overall system resilience. Digital technologies, i...

Growing electric vehicle (EV) dissemination will increase charging infrastructure installation at home. Similar daily routines are associated with high peak loads due to simultaneous EV charging. However, predominantly residential power transmission is not designed for such high loads, yielding charging bottlenecks and restricting future charging a...

Das erfolgreiche und schnelle Erreichen von Nachhaltigkeits- und Klimaschutzzielen rückt zunehmend in den Fokus des politischen, wirtschaftlichen und gesellschaftlichen Handelns. Vor diesem Hintergrund kann und muss die Energiewirtschaft weiter wesentlich zur Dekarbonisierung in Deutschland und ganz Europa beitragen. Für eine erfolgreiche Transform...

To achieve a sustainable energy system, a further increase in electricity generation from renewable energy sources (RES) is imperative. However, the development and implementation of RES entail various challenges, e.g., dealing with grid stability issues due to RES’ intermittency. Correspondingly, increasingly volatile and even negative electricity...

We present a market model of a liberalized aviation market with independent decision makers. The model consists of a hierarchical, trilevel optimization problem where perfectly competitive budget-constrained airports decide (in the first level) on optimal runway capacity extensions and airport charges by anticipating long-term fleet investment and...

The energy sector provides fuel for much of everyday life, particularly economically and socially. Fighting against the COVID-19 pandemic, a well-functioning and resilient energy sector is vital for maintaining the operation of critical infrastructures, including, most importantly, the health sector, and timely economic recovery. Notwithstanding it...

To achieve national energy and climate targets across the world, there is a key focus on solar energy development. It is clear from literature that many countries have enormous, under-utilised potentials for solar energy, which can significantly change their energy mix and contribute to the low-carbon ambitions they signed up to under the 2015 Pari...

Markets are an essential tool to coordinate complex systems. Engineering markets requires the consideration of numerous objectives and factors that will eventually determine the market’s success. These objectives and factors are frequently not well defined or elaborated. Hence, this chapter aims to support market design through a perspective on wha...

The first wave of the COVID-19 pandemic led to decreases in electricity demand and a rising share of Renewable Energy Sources in various countries. In Germany, the average proportion of net electricity generation via Renewable Energy Sources rose above 55 % in the first half of 2020, as compared to 47 % for the same period in 2019. Given these alte...

Many countries have a clear policy objective of increasing their share of renewable energy sources (RESs). However, a major impediment to higher RES penetration often lies in the historically grown structures of a country's electricity sector. In Indonesia, policymakers have relied on cheap fossil fuels and state control to provide the population w...

Indonesia's current energy policy, which relies on cheap fossil fuels and focuses on two out of the three horns of the energy trilemma, namely, energy security and energy equity, may impede its efforts to higher shares of renewable energy sources. This paper develops three generic models that allow policymakers to analyze the impact of introducing...

To achieve a sustainable energy system, a further increase in electricity generation from renewa-ble energy sources (RES) is imperative. However, the development and implementation of RES entail various challenges, e.g., dealing with grid stability issues due to RES’ intermittency. Corre-spondingly, increasingly volatile and even negative electrici...

We present a market model of a liberalized aviation market with independent decision makers. The model consists of a hierarchical, trilevel optimization problem where perfectly-competitive budget-constrained airports decide (in the first level) on optimal runway capacity extensions and airport charges by anticipating long-term fleet investment and...

To expand intermittent renewable electricity sources (RESs), worldwide energy policy makers have introduced fixed feed-in tariffs (FITs). However, FITs typically expire after a limited time period. Due to the intermittent electricity supply of RES, market distortions, and insufficient flexibility options, exclusive participation in wholesale electr...

Das vorliegende Diskussionspapier in der dritten Auflage dokumentiert den Arbeitsstand des Clusters III – Informations- und Kommunikationstechnik im Kopernikus-Projekt SynErgie im September 2020. Das Diskussionspapier soll zur Abstimmung und Diskussion der Konzepte anregen, deren Ergebnisse wiederum in die Weiterentwicklung dieser Konzepte einfließ...

Economic, ecologic, and social benefits support the rapid diffusion of grid-connected microgrids (MG). Economic feasibility still stands out as the primary goal of commercial MGs. A stationary electrical energy storage system (ESS) is often a central component of MGs, facilitating islanding and cost-effective management of main grid use. Therefore,...

Given the growing share of uncertain renewable energy production, the energy transition challenges modern power systems and especially calls for increased flexibility. However, relevant information on the highly asset-specific flexibility potential is typically only known to plant operators themselves and not, e.g., to transmission system operators...

To combat climate change, many countries all around the world currently foster the development of renewable energy sources (RES). However, in contrast to traditional energy systems that relied on few central power plants, RES are typically highly decentral and spread all over a country. Against this backdrop, the promotion of a decentralization of...

In many countries, industry is one of the largest consumers of electricity. Given the special importance of electricity for industry, a reliable electricity supply is a basic prerequisite for further industrial development and associated economic growth. As countries worldwide transition to a low-carbon economy (in particular, by the development of...

This paper analyzes the interplay of transmission and storage investments in a multistage game that we translate into a bilevel market model. In particular, on the first level we assume that a transmission system operator chooses optimal line investments and a corresponding optimal network fee. On the second level we model competitive firms that tr...

Modern electricity markets are characterized by an increasing share of renewable electricity generation. This growth in the share of renewables yields a highly intermittent generation structure. To efficiently integrate renewable electricity generation into our energy system, flexibility options ranging from storage facilities to demand-side manage...

Even though globalization has led to larger, faster, and more efficient supply chains, at the same time the new worldwide interconnection has also resulted in major challenges with respect to hidden systemic risks. In particular, there is a lack of a holistic perspective on the entire supply network. This missing global view prohibits the anamnesis...

Given the low carbon transformation of our energy systems, demand response has the potential to increase the adaptability of electricity demand to a volatile electricity supply. In this article, we investigate the demand response potential for the case where substituting technologies are available in an energy-intensive industrial production proces...

This paper analyzes the effects of storage facilities on optimal zonal pricing in competitive electricity markets. In particular, we analyze a zonal pricing model that comprises consumers, producers, and storage facilities on a network with constrained transmission capacities. In its two limit cases, our zonal pricing model includes the reference n...

In this paper, the main contributions to congestion management and electricity pricing, i.e., nodal, zonal, and uniform electricity pricing, are surveyed. The key electricity market concepts are structured and a formal model framework is proposed for electricity transportation, production, and consumption in the context of limited transmission netw...

We propose an equilibrium model that allows to analyze the long-run impact of the electricity market design on transmission line expansion by the regulator and investment in generation capacity by private firms in liberalized electricity markets. The model incorporates investment decisions of the transmission system operator and private firms in ex...

In liberalized electricity markets we observe different approaches to congestion management. While nodal pricing is implemented in Canada and some markets in the United States, European markets are split up into a limited number of price zones with uniform prices, in order to at least partially realize the benefits of regional price differentiation...