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A major accident at a nuclear power reactor can lower public acceptance of this energy source and may result in a nuclear exit. This paper proposes an optimal power-generation planning model that deals explicitly with the costs involved in changing the power-generation mix due to a nuclear exit. The model introduces the probability of a major accident leading to a nuclear exit at a future time period as an endogenous variable, which is determined depending on the amount of nuclear power being generated during the preceding period. The proposed model is formulated as a stochastic programming problem that aims to minimize the expected value of overall power-generation costs computed with a weighted probability of every future state, branched according to a possible nuclear exit at each time period. An application of the model quantitatively implies that less nuclear dependency is optimal for a higher assumed frequency of a major accident per generated unit of electrical energy from nuclear—not only for the cost of direct damage from the accident, but largely because of the increased cost of overall power generation due to the subsequent nuclear exit. To put it differently, lowering the frequency of a major nuclear accident per reactor·year brings benefits exceeding the conventionally perceived effect of reducing an accident's direct damage. Lowering the major accident frequency to one per 106 reactor·years would free the optimal planning of future electricity supply from influence of an accident causing nuclear exit, if the geographical scale of the exit were limited to one-twentieth of the entire world.

The work deals with the two German nuclear power phase-out plans (ie. Atomausstieg) conducted in 2002 and 2011. The aim is to compare the nuclear policies of the red-green (governed 1998-2005) and the black-yellow coalition (governed 2009-2013) in relation to the abandonment of nuclear power as an energy source and to find differences in the aspects of policies that these governments implemented. Comparison of elected political decisions of the government is examined on the basis of several criteria like the method which have been the applied on the abandonment of nuclear energy, the speed of the phase-out, the motivation for this step and short-term impacts of governmental policies in the field of nuclear energy on the structure of electricity production in Germany. In this work it was found that despite some differences, such as (non)cooperation with energy concerns, the motivation for the nuclear power phase-out, the speed of switching off of the nuclear power plants, or the legal implications, final form of a phase-out done by the black-yellow coalition is in its basic essence very similar to the original intention. This can be explained by Angela Merkel's emphasis on pragmatic way of conducting politics that leads to a prolonged centrist position and popular support of her party CDU/CSU.

On 11th March 2011 was Japan hit by tsunami, which caused among others the accident in nuclear energy station in Fukushima. This disaster has influenced the German energy policy a lot and this despite the fact that Japan is situated on the other side of the world. The real risks of nuclear power in Germany didn't change as well. This paper follows the changes of energy policy that were caused by the accident. Because of the long-term character of energy decisions, is it important to mention the period of red-green alliance, which was very essential. The paper concentrates on the years 2010 and 2011, when the most changes happened. The changes in nuclear sector and renewable sources sector are described more in detail. The aim of this paper is the qualitative description of these changes and the evaluation of their consequences and the overall impact on the German power industry. The nuclear disaster in Fukushima accelerated the development within the energy transition, which started in 2000. The changes were very fast and the biggest impact was caused in nuclear sector, which was the acceleration of nuclear phase out. In renewable sources sector was the effect minimal, the targets remained unchanged. The energy transition goes very well, despite some negative effects. In future would it be...

Germany decided in summer 2011 to stop using the atom as a source of energy. Politicians responded this way because of resistance of the society to the nuclear power. This opposition grew after the accident in Japanese power station Fukushima in March 2011. This thesis deals with German nuclear power policy and the anti-nuclear movement. It will trace it from its beginning in 1998, when the Green party was for the first time in government and the first nuclear power phase-out was decided, until the year 2012. The moves of mostly political participants are analysed in connection to Fukushima accident. The aim of this analyse is to describe the changes in German energy policy and to find reasons for the decision to give up nuclear power. The paper comes to conclusion that the reason for the amendment of nuclear act and thereby gradual disconnection of all nuclear power stations was not only because of the demand by the public, but also the pressure of the opposition on the government. The government tried to keep their voters, alternatively the bigger coalition partner CDU/CSU wanted to open another coalition possibility with one of the oppositional parties. Germany will have to build in following years not only new power stations, but also intelligent nets as well. If the Germans want to keep their goals...