This paper assesses the ability of consumers to choose between alternative suppliers. Across two independent datasets from the UK electricity market we find that consumers switching exclusively for price reasons appropriated only a quarter to half of the maximum gains available. While such...

Liberalisation of the British electricity market, in which previously monopolised regional markets were exposed to large-scale entry, is used to test the propositions of several recent theoretical papers on oligopolistic nonlinear pricing. Consistent with those theories, each oligopolist offered...