I study several policy instruments for carbon mitigation with a focus on subsidies for renewable energies, emission taxes and emission allowances. In Chapter 1, I analyze the optimal design and the welfare implications of two policies consisting of an emission tax for conventional fossil-fuel...

Despite calls for more integrated residual management, research on the performance of methods to regulate pollution has paid little attention to cases of multiple pollutant control. This study helps rectify this omission in multiple ways. In Chapter 1 I describe the many issues that arise in the...

This paper examines the interdependence between imperfect competition and emis-sions trading in a two-sector (clean and dirty) economy. We compare the welfare implica-tions of an absolute cap-and-trade scheme (permit trading) with a relative intensity-basedscheme (credit trading). We nd...

In this paper a model based analysis of competition in the German wholesale electricity market is presented. Applying a multi-regional model which covers the interregional transmission constraints between Germany and its neighboring countries, potential for exercising market power by the four...

With the advent of digital convergence, incumbent telephone and cable companies have begun to offer their services, such as voice telephony, Internet and TV in so-called triple play packages. While carefully recognizing the technological, legal and economic framework of the fixed-line...

This paper shows that generators exercised increasing market power in the England and Wales wholesale electricity market in the second half of the 1990s despite declining market concentration. It examines whether this was consistent with static, non-cooperative oligopoly models, which are widely...

This paper analyses the economics of long-term gas contracts under changing institutional conditions, mainly gas sector liberalisation. The paper is motivated by the increasingly tense debate in continental Europe, UK and the US on the security of long-term gas supply. We discuss the main issues...