Wolfgang Ketter

Wolfgang Ketter
University of Cologne | UOC · Department of Information Systems

PhD

About

195
Publications
42,435
Reads
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2,671
Citations
Introduction
Wolfgang Ketter is Chaired Professor of Information Systems at the Faculty of Management, Economics, and Social Sciences at the University of Cologne, Cologne, Germany (since 2017). He also serves as the Director of the Erasmus Centre for Future Energy Business and as Academic Director of the Erasmus Centre for Data Analytics at the Rotterdam School of Management, Erasmus University, Rotterdam, the Netherlands.
Additional affiliations
February 2017 - present
University of Cologne
Position
  • Professor
July 2013 - present
Erasmus University Rotterdam
Position
  • Professor
October 2011 - June 2013
Rotterdam School of Management
Position
  • Professor (Associate)

Publications

Publications (195)
Article
The role of retailers, as energy providers for end-users, in restructured retail electricity markets becomes substantial. The increasing share of distributed energy resources and electrification in different sectors bring several challenges to retailers. Among these challenges, procuring electricity and maintaining system reliability during peak ti...
Article
Transportation is a backbone of modern globalized societies. It also causes approximately one third of all European Union and U.S. greenhouse gas emissions, represents a major health hazard for global populations, and poses significant economic costs. However, rapid innovation in vehicle technology, mobile connectivity, computing hardware, and arti...
Article
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Zusammenfassung Das Jahr 2021 hat in Deutschland neuen Schwung in die Bemühungen zum Klimaschutz gebracht. Die Novelle des Klimaschutzgesetzes schreibt eine Reduktion der Treibhausgasemissionen um 65 % bis zum Jahr 2030 gegenüber 1990 fest. Maßgeblich dazu beitragen soll ein massiver Ausbau der Stromerzeugung aus erneuerbaren Energien. Nach Verschä...
Article
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With direct electrification at the core of global decarbonization efforts, it is key for policy makers to adequately evaluate market dynamics in renewable power systems. The ongoing integration of renewable energy sources fundamentally changes these dynamics, with variable production profiles, lower marginal production costs and increased price vol...
Article
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The transition to renewable energy requires organizations and governments to formulate and enact new energy policies. This emerging energy era is characterized by higher levels of supply and demand intermittency, which requires information systems to manage the electricity grid. We propose key policy elements for managing intermittency based on inf...
Article
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A common principle of electricity pricing is ensuring that costs and benefits are aligned such that economic efficiency is optimized. Deviations from this principle are commonplace in residential pricing, especially for distributed generation (DG). Here, subsidizing renewable energy sources can sometimes precede economic considerations, causing a d...
Article
Underdeveloped charging infrastructure is one of the main barriers to widespread electric vehicle (EV) adoption. Transforming parking lots into EV-enabled parking lots that provide parking and charging services is a solution to address the need for charging stations. Two challenges arise in this context: (1) how many parking spots should receive EV...
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The rapid growth of distributed renewable energy sources has increased concerns about the fairness of electricity pricing, particularly in the residential sector. Hence, many recent studies have focused on topics of equity in residential electricity tariffs. This paper reviews such studies and places them in a historical context of the study of ele...
Article
A common problem in many mature markets is how to deal with congestion—a situation in which transaction requests from market participants cannot be accommodated in an expedited manner. This paper examines the congestion problem in sequential Dutch auction markets. Transactions in these markets typically involve perishable goods, making market clear...
Article
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A consensus is beginning to emerge that the next phase of artificial intelligence (AI) induction in business organizations will require humans to work with AI in a variety of work arrangements. This article explores the issues related to human capabilities to work with AI. A key to working in many work arrangements is the ability to delegate work t...
Article
We study a novel operational problem that considers vehicle positioning in on-demand rental networks, such as car sharing in the wider context of a competitive market in which users select vehicles based on access. Existing approaches consider networks in isolation; our competitor-aware model takes supply situations of competing networks into accou...
Conference Paper
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As artificial intelligence (AI) can increasingly be used to support decision-making in various areas, enhancing the understanding of human-AI collaboration is more important than ever. We study delegation between humans and AI as one form of collaboration. Specifically, we investigate whether there exist distinct patterns of human delegation behavi...
Preprint
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Power TAC (www.powertac.org) is a discrete-time competitive simulation that models a retail electricity market. Competing retail brokers are autonomous agents, communicating with the simulation over the internet.They offer energy services to customers through tariff contracts, and must then serve those customers by trading in a wholesale market. Ho...
Article
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We analyze how advice from an AI affects complementarities between humans and AI, in particular what humans know that an AI does not know: “unique human knowledge.” In a multi-method study consisting of an analytical model, experimental studies, and a simulation study, our main finding is that human choices converge toward similar responses improvi...
Article
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In 2016, the Dutch government, in pursuit of the UN’s sustainable development goals, set a target that all its diesel transit bus networks should be fully electrified between 2025 and 2030. A research team from Rotterdam School of Management has since worked in close collaboration with Rotterdamse Elektrische Tram, the public transport operator in...
Article
We assess the case of the abrupt discontinuation of the three-in-one policy, a high-occupancy vehicle (HOV) restriction, in Jakarta, with the objective of mapping potential interdependencies in the transportation system. Statistical investigation of the passenger volume in the bus rapid transit (BRT) system in the whole city before and after the po...
Article
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To comply with sustainability goals, many companies buy green energy to serve their energy demand. This is typically done by engaging in bilateral power purchase agreements (PPA) with renewable energy producers (REP). A PPA can be flexibly structured, but the core principle is that a buyer (company) agrees to buy future energy production of a selle...
Article
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In the battle against climate change, electrification plays an increasingly large role in our society. The growing use of electricity networks requires advanced coordination mechanisms to avoid the tragedy of the commons. In this paper, we explore the effects of optimum time-dependent pricing (TDP) on supplier surplus within electricity markets, us...
Article
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Renewable generation is rapidly expanding across many electricity grids, often as distributed renewable energy sources (D-RES). D-RES, such as rooftop solar panels, change a household’s electric relationship with the external grid, demanding a likewise change in its economic relationship with the retailer. In particular, D-RES can impact fairness a...
Article
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Distributed renewable energy sources (D-RES) are growing, transforming electricity consumers into producer–consumers (“prosumers”). Retail electricity tariffs require new mechanisms to fairly purchase D-RES generation from and transfer costs to prosumers. Otherwise, cross-subsidy (wealth transfers from some prosumers to others) can worsen tariff ou...
Article
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We analyse how the introduction of the same renewable energy technology at different parts of the electricity supply chain has different price formation effects on wholesale power markets. We develop a multi-stage competitive equilibrium model to evaluate the effects on short-term price formation of a technology shift from conventional to both larg...
Article
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Public Transport Operators (PTOs) increasingly face a challenging problem in switching from conventional diesel to more sustainable battery electric buses (BEBs). In this study, we optimize the opportunity fast-charging schedule of transit BEB networks in order to minimize the charging costs and the impact on the grid. Two Mixed Integer Linear Prog...
Preprint
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Electrifying transit bus networks (TBNs) has recently become a challenging problem that many public transport operators (PTOs) around the world are facing. Unlike diesel buses (DBs), battery electric buses (BEBs) need to recharge several times during the day due to their limited driving range. Hence, electric TBNs are sensitive to operational delay...
Article
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There is both a need and an opportunity to develop analytics-driven approaches to address many significant challenges facing society. Toward this end, this article presents an “ESG-ICE” framework that builds on environmental, social, and governance (ESG) perspectives by considering their interactions with desirable outcomes such as individual well-...
Article
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With an increasing share of renewable energy resources participating in electricity markets, there is a growing dependence between renewable power production and clearing prices of spot markets. Modeling this dependence using bivariate analysis can result in underestimation of market risks and adverse effects for stakeholders’ risk management. To e...
Article
Electric vehicle (EV) owners enjoy many positive aspects when driving their cars, including low running costs and zero tailpipe gas emissions, which makes EVs a clean technology provided that they are sourced through renewable sources, e.g., biomass, solar power, or wind energy. However, their driving behaviour is often negatively affected by the s...
Article
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Ridesharing platforms are often discussed in connection with their positive environmental impact – an assumption rooted in the idea that access-based consumption reduces traditional vehicle ownership. However, evidence in support of this claim is inconsistent. The present paper maintains that the environmental impact of ridesharing platforms must b...
Article
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A transition to electric vehicles (EVs) is widely assumed to be an important step along the road to environmental sustainability. However, large scale adoption of EVs may put electricity grids under critical strain, since peaks in electricity demand are likely to increase radically. Efforts to manage demand peaks through pricing schemes may create...
Article
Available through SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3564107
Article
Full-text available
For an auctioneer it is of utmost importance to design an auction mechanism that gives robust price signals which in turn increases auction performance. Information architecture and forward trading platforms are the two main information sources that could generate these price signals. However the traditional presumption that agents form rational ex...
Preprint
Full-text available
We develop a general agent-based modeling and computational simulation approach to study the impact of various factors on the temporal dynamics of recommender systems' performance. The proposed agent-based simulation approach allows for comprehensive analysis of longitudinal recommender systems performance under a variety of diverse conditions, whi...
Article
One of the central issues in auction design is how much information should be disclosed to bidders. In this paper, we examine bidder's identity disclosure in sequential business-to-business (B2B) auctions. Specifically, we compare two information disclosure policies, one that publicly discloses winners’ identities (the status quo) and an alternativ...
Article
We develop a dynamic structural model of competitive bidding in multiunit sequential business-to-business auctions. Our model accounts for two notable characteristics of these auctions: (i) bidders have multiple purchase opportunities for the same product, and (ii) winning bidders in each round can acquire multiple units of the same product. We app...
Article
There are two ways of managing market price risk in electricity day ahead markets, forecasting and hedging. In emerging markets, since hedging possibilities are limited, forecasting becomes the foremost important tool to manage spot price risk. Despite the existence of great diversity of spot price forecasting methods, due to the unique characteris...
Article
Renewable energy cooperatives (RECs) are an important element of the European energy transition. Allowing citizens and companies to invest in renewable energy and thereby become independent power producers has advanced the acceptance of renewable energy among the population, accelerating the move toward a more decentralized and sustainable power su...
Article
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The drive for sustainability as evidenced by the Paris Accords is forcing a radical re-examination of the way electricity is produced, managed, and consumed. Research on sustainable smart electricity markets is facilitating the emergence of sustainable energy systems and a revolution in the efficiency and reliability of electricity consumption, pro...
Article
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Emerging domains such as smart electric grids require decisions to be made autonomously, based on the observed behaviors of large numbers of connected consumers. Existing approaches either lack the flexibility to capture nuanced, individualized preference profiles, or scale poorly with the size of the dataset. We propose a preference model that com...
Article
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Virtual power plants (VPP) play a crucial role in balancing the electricity smart grid. VPPs aggregate energy from decentralized sources, for example, biogas, solar panels, or hydropower, to generate and consume electricity on demand. We study the management of electric vehicle (EV) fleets organized in VPPs as a way to address the challenges posed...
Article
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The recent advent of electric vehicles (EVs) marks the beginning of a new positive era in the transportation sector. Although the environmental benefits of EVs are well-known today, planning and managing EV charging infrastructure are activities that are still not well-understood. In this paper, we are investigating how the so-called EV-enabled par...
Article
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Energy management plays a crucial role in providing necessary system flexibility to deal with the ongoing integration of volatile and intermittent energy sources. Demand Response (DR) programs enhance demand flexibility by communicating energy market price volatility to the end-consumer. In such environments, home energy management systems assist t...
Article
Increasingly, residential customers are deploying PV units to lower electricity bills and contribute to a more sustainable use of resources. This selective decentralization of power generation, however, creates significant challenges, because current transmission and distribution grids were designed for centralized power generation and unidirection...
Article
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Car sharing services gain momentum as a potential alternative to various modes of transportation, including privately owned cars. This trend goes hand in hand with a renewed interest in the sharing economy, which has as essential premise that product ownership is of minor relevance. Using an online experiment, this study investigates if individual...
Conference Paper
Full-text available
The reduction of greenhouse gas emissions is seen as an important step towards environmental sustainability. Perhaps not surprising, many governments all around the world are providing incentives for consumers to buy electric vehicles (EVs). A positive response from consumers means that the demand for the charging infrastructure increases as well....
Article
This paper is the specification for the 2017 Power Trading Agent Competition, available at SSRN (https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2916182). It has been superseded by the 2018 specification (https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3087096) and the 2020 specification (https://papers.ssrn.com/sol3/papers.cfm?abstract_id=...