Standard methods for optimal allocation of shares in a financial portfolio are determined by second-order conditions which are very sensitive to outliers. The well-known Markowitz approach, which is based on the input of a mean vector and a covariance matrix, seems to provide questionable...

In the last few years we have observed an increasing interest in deregulated electricity markets. Only few papers, to the authors' knowledge, have considered the Italian Electricity Spot market since it has been deregulated recently. This contribution is an investigation with emphasis on price...

In this paper the volatility structure of electricity prices in the Italian zonal market is analyzed. Volatility should be a primary concern for investors and operators on energy markets because it is related to investment uncertainty and power plant management. Even if volatility of electricity...

We modelled electricity prices by fractionally integrated processes finding significant relations between zonal spot prices and exogenous variables. Day-ahead forecasts have been computed thanks to forecasted volumes and a scenario analysis

In the last few years we have observed deregulation in electricity markets and an increasing interest of price dynamics has been developed especially to consider all stylized facts shown by spot prices. Only few papers, to the authors' knowledge, have considered the Italian Electricity Spot...

In this paper a robust approach to modelling electricity spot prices is introduced. Differently from what has been recently done in the literature on electricity price forecasting, where the attention has been mainly drawn by the prediction of spikes, the focus of this contribution is on the...

The harmonization and integration of separate national energy markets to an interconnected internal European market is a top priority of the European Commission. However, as energy policy largely remains subject to national sovereignty, a higher degree of integration can cause unilateral...

Ensuring the security of stable, efficient, and reliable energy supplies has intensified the Interconnections among energy markets. Imbalances between supply and demand due to operational failures, congestions and other sources of risk faced by these connections can lead to a system that is...

The German response to the Fukushima nuclear power plant incident was possibly the most significant change of policy towards nuclear power outside Japan, leading to a sudden and very significant shift in the underlying power generation structure in Germany. This provides a very useful natural...