Big power companies received the lowest ratings for customer satisfaction in Consumer NZ's latest annual survey.
Consumer chief executive Sue Chetwin said 73 per cent of those who participated in the survey rated their power companies' performance as "good" or "very good", the same proportion as in our 2014 survey.
However, customers of most of the big five electricity retailers were less likely than average to be satisfied with their company's performance, she said.
Genesis Energy received the lowest performance score of 64 per cent. Contact Energy rated 67 per cent. "Both companies have consistently scored below average in Consumer's satisfaction surveys since 2010," Ms Chetwin said.
Of the other main players, Mercury Energy and Meridian Energy each scored 70 per cent while Trustpower rated 75 per cent.