This paper quantifies the degree of market power in the German wholesale electricity market. A fundamental model is used to derive competitive marginal cost estimators which are compared with observed electricity prices. Marginal costs are calculated focusing on market fundamentals such as plant...

This paper shows that generators exercised increasing market power in the England and Wales wholesale electricity market in the second half of the 1990s despite declining market concentration. It examines whether this was consistent with static, non-cooperative oligopoly models, which are widely...

Sähkömarkkinoiden osittainen avautuminen kilpailulle on merkinnyt alan toimintaympäristön perusteellista muutosta. Muutos Euroopassa alkoi 1990-luvun alussa kun Englanti ja Norja vapauttivat sähkön myynnin ja tuotannon kilpailulle. EU:n sisällä sähkömarkkinoiden uudistusta ohjaa...

We review the recent empirical research concerning market power on the Nordic wholesale market for electricity, Nord Pool. There is no evidence of blatant and systematic exploitation of system level market power on Nord Pool. However, generation companies seem from time to time able to take...