Efficiency in the management of electricity transmission networks is essential for the success of the liberalized energy markets. The paper is dedicated to the short-run management problems of these natural monopolies. It analyses how to organize and price access to and use of the transport...

We consider a principal-multiagent framework with adverse selection when contracting is possible ex ante. However, enforcement of contracts is imperfect, which results in inefficiencies. We study how group contracting may or may not mitigate those inefficiencies.