Contact Energy plans to cut more than 100 jobs as part of a $40 million cost saving drive.
The company says its big power station building programme is almost over electricity demand remains weak.
A spokesman said the company aimed to cut 10 per cent of its 1100-strong workforce by the end of the financial year on June 30.
Jobs would be across board at the business, New Zealand's biggest listed electricity company, majority owned by Australia's Origin Energy.
The plans were outlined to 65 managers by chief executive Dennis Barnes at a meeting yesterday.