Monitor Energy Markets 2007 - Analysis of developments on the Dutch wholesale markets for gas and electricity

The Dutch wholesale markets for energy are still impeded by various bottlenecks, as a result of which the costs for energy consumers are higher than they should be in well-functioning markets. Simply making more efficient use of the import infrastructure could save energy consumers several tens of millions of euros. The bottlenecks occur primarily in the gas market, where various impediments are impeding the quicker introduction of competition.Monitoring, electricity, gas, competition, infrastructure

Mergers of Germany's natural gas market areas:Is transmission capacity booked efficiently?

In the past, networks of natural gas transmission system operators (TSOs) determined the gas market areas in the European Union. However, gas markets mergers introduce the possibility to book the transmission capacity of alternative TSOs. One necessary condition for competition among TSOs is the absence of restrictions in capacity booking. This paper analyses whether this holds for Germany. As German TSOs distinguish a number of capacity types to deal with network constraints, market mergers have created transport alternatives for only 32% of cross-border capacity products. In almost all cases, we find that gas transmission network users make efficient booking decisions

Robustness of Various Capacity Mechanisms to Regulatory Errors

In the EU, several governments have introduced or are contemplating a capacity mechanism to ensure adequate investment in generation capacity. Previous research has focused on the impacts of capacity mechanisms on installed capacity and cost to consumers in case of efficient regulation. By contrast we find that the choice between capacity mechanisms may be influenced by the extent of regulatory errors as well as whether the mechanisms evaluated from the perspective of consumer cost or from a welfare perspective

Financial risk management and market performance in restructured electric power markets: Theoretical and agent-based test bed studies

Electric power systems have traditionally been operated as natural monopolies. Restructuring has entailed un-bundling of hitherto vertically integrated organizations into independently managed generation, transmission and distribution systems. As a result, electric power markets can be divided into wholesale and retail layers. The wholesale power market design proposed by the U.S. Federal Energy Regulatory Commission (FERC) in an April 2003 white paper FERC (2003) encompasses the following core features: central oversight by an independent system operator (ISO); a two-settlement system consisting of a day-ahead market supported by a parallel real-time market to ensure continual balancing of electric power supply and demand. In this new environment electricity is traded like other commodities in ISO organized power pools. However, power systems must be in instantaneous power balance, i.e. demand must equal supply at all times. Moreover, at present, electric power cannot be stored economically in substantial amounts. The power flows on transmission systems are governed by physical laws of power flow such as the Kirchoff\u27s law, and are constrained by the overall capacity of transmission lines. During the peak hours of electric power demand, the above mentioned constraints become binding affecting outcomes throughout the grid. Transmission constraints in particular create congestion, which can impede the generation and/or injection of electric power into the grid in merit-order , i.e., from least-cost generator to high-cost generators. Electric power prices can be very volatile and hence, new forms of risk have arisen due to the restructuring. As part of restructuring, congestion on electricity transmission grids is now handled in many energy regions by means of locational marginal pricing (LMP), i.e., the pricing of electric energy in accordance with the location of its injection or withdrawal from the grid. The LMP so calculated at a node k measures the least cost to supply an additional unit of load at that location from the resources of the system. The difference in LMPs at any two buses is known as congestion rent, which is collected by the ISO. In the case of grid congestion, LMPs can vary widely across the grid, which creates price risk for all market participants. Using existing market design features, this thesis investigates the risk management issues of market participants and overall efficiency of the wholesale power markets. Additionally, I also study the market rules dealing with renewable energy sources

Risk trading in capacity equilibrium models

We present a set of power investment models, the class of risky capacity equilibrium problems, reflecting different assumptions of perfect and imperfect markets. The models are structured in a unified stochastic Nash game framework. Each model is the concatenation of a model of the short-term market operations (perfect competition or Cournot), with a long-term model of investment behavior (risk neutral and risk averse behavior under different assumptions of risk trading). The models can all be formulated as complementarity problems, some of them having an optimization equivalent. We prove existence of solutions and report numerical results to illustrate the relevance of market imperfections on welfare and investment behavior. The models are constructed and discussed as two stage problems but we show that the extension to multistage is achieved by a change of notation and a standard assumption on multistage risk functions. We also treat a large multistage industrial model to illustrate the computational feasibility of the approach