I examine energy stocks in the context of a diversified investment portfolio. Several factors – the importance of the energy sector, their potential to hedge energy risks, growing interest in real assets, as well as anecdotes of sophisticated investors focusing on energy investments –...

This paper develops the first urban simulation model with endogenous population, housing supply and demand, and highway use and congestion. These features allow the model to simulate cities of different sizes with a single parameterization and hence to study the partial effect of city size...

The purpose of this paper is the comparative analysis of four natural gas storage valuation approaches. In competitive natural gas markets the optimal valuation and operation of natural gas storages is a key task for natural gas companies operating storages. Within this paper, four spot based...