TrustPower Ltd., New Zealand’s second-largest operator of wind farms, announced to face a 3 percent slip in its second-half profit triggered by raised network costs and a one-time charge surpassed higher electricity sales.

In addition, Tauranga-based TrustPower operates dams and its Tararua wind farm to produce electricity purchased from rivals at the customers end.

Its net income registered a squeeze NZ$37 million ($26 million) in the six months ended March 31 compared NZ$38.3 million recorded the previous year.

The earnings, computed by excluding first-half profit from the NZ$119.4 million full-year result reported today, included a NZ$6.2 million write down of a customer information system.

Its revenue is posted to soar 11 percent touching NZ$350.3 million in the half year, triggered by 6 percent rise in power volumes and robust output incurred from its Snowtown wind project in South Australia.

TrustPower marked a climb 5 cents, or 0.7 percent, touching NZ$7.35 at 3:30 p. m. in Wellington.

The company is under plans to divulge nearly NZ$125 million this fiscal year, including NZ$75 million on a 36-megawatt wind project it initiate work on in September at Mahinerangi on New Zealand’s South Island.