We propose to assess the influence of a number of events on the degree of competition in the Dutch electricity wholesale market over the period 2006–2011 through a decomposition method based on the residual supply index. We distinguish regulatory market-integration events, firm-level events...

This paper examines a decade of retail competition in the Dutch electricity market and discusses market structure, regulation, and market performance. We find a proliferation of product variety, in particular by the introduction of quality-differentiated green-energy products. Product innovation...