The security of energy supply is one of the main objectives of EU energy policy. In this paper, we introduce an index designed to evaluate the short-term risks associated with the external supply of energy to the EU Member States. It combines measures of energy import diversification, political...

Does voluntary contracting suffice for the efficient provision of excludable public goods? Even in a complete information environment, we find that the answer is negative. The reason is that some agents may profit from not participating at the provision stage, but instead negotiate access ex post

If individuals own the right to take any action that they please, and are free to contract about behavior, will outcomes be efficient in all situations? That is, does the Coase theorem hold? We study this classic question through the lens of a non-cooperative model of contract negotiations,...

In many organizations, decisions are taken by unanimity giving each member veto power. We analyze a model of an organization in which members with heterogenous productivity privately contribute to a common good. Under unanimity, the least efficient member imposes her preferred effort choice on...

The security of energy supply is one of the main objectives of EU energy policy. In this paper, we introduce an index designed to evaluate the short-term risks associated with the external supply of energy to the EU Member States. It combines measures of energy import diversification, political...