The head of the insurer's Pacific business takes charge on 1 November, joining the group executive committee as Sue Houghton prepares to retire at year-end.
Grid constraints, curtailment and congestion were cited as a growing operational concern by 85% of respondents, 23 percentage points ahead of any other risk.
The insurer said any settlement would not be expected to have a material impact on its financial position or FY2027 results, based on anticipated recoveries.
The 35-year-old Australian MGA is writing prestige, luxury, high-performance and classic motor risks for New Zealand brokers on MS Amlin capacity at Lloyd's.