This paper is the first in a symposium of papers that examine the 2009 report by Frank Wolak into the New Zealand electricity market. The Wolak report concluded that there had been a cumulative total of NZ$4.3 billion of overcharging in the New Zealand wholesale market over a period of seven...

This paper is the second in a symposium of papers that examine the 2009 report by Frank Wolak into the New Zealand electricity market. In this paper, we discuss the Report's measures of the ability and incentives of generators to exercise unilateral market power. We show that the construction...