Contact Energy's half year profits are forecast to drop by 20 per cent by one analyst although there are positive revenue signs for the remainder of the year.
Forsyth Barr's Andrew Harvey-Green said normalised profit for the six months to December 31 was forecast to be $66.3 million, down from $82.4 million in the corresponding half year.
The main driver for the fall was increased interest costs.
In the first half of the 2011 year the company was able to capitalise interest associated with its gas storage and gas peaker projects in Taranaki.
Contact is New Zealand's third biggest listed company by market capitalisation and will deliver its interim result tomorrow.