Power generator and retailer Genesis Energy said its chief executive Marc England had informed the board he intended to leave the company after six years in the top job.
"The board is informed that Marc is in advanced stages of discussion in respect of an opportunity abroad," Genesis said in a short statement.
In an interview with the NZ Herald last year, England described himself as "not your typical Englishman".
He attended Gordonstoun, in Scotland, where Prince Charles spent time in the 1960s.
As the son of a United Nations' diplomat, the young England travelled the world - mostly in Asia but also in Africa, which meant international schools in his early years.