I revisit the dominant-firm model and discuss its implicit assumption of a sequential move structure. I argue that a simultaneous move structure is often more reasonable and derive an alternative formulation of the model based on this approach. -- dominant firm ; monopoly with fringe ;...

The European Commission is introducing new regulations on submission and publication of data in electricity markets (SPDEM) and on wholesale energy market integrity and transparency (REMIT). I discuss issues relevant for undertaking an evaluation such regulations. I argue that, for market...

We analyse retailer and household behaviour on the Norwegian electricity market, based on detailed information on prices and other market characteristics. We find that there exists a competitive market segment where a number of retailers compete fiercely for customers, with small margins on all...