Two out of three generators at Otago's first wind farm are performing well, but the third is going through some "teething troubles".
Pioneer Generation started producing power from its Horseshoe Bend wind farm, 15km east of Roxburgh, in late October.
All three machines had been operating for about a month, but "teething troubles" had recently developed with one, Pioneer chief executive Peter Dowling said.
"It's nothing major, but we've been having a few problems in the past month with one of the towers.
"We expected some minor problems, as we're using secondhand equipment, but it will be fixed and generating again fairly soon."
The 45m-tall wind turbines were manufactured and used in Europe and two people travelled from the Netherlands to help the company install them.
Mr Dowling said the past couple of months had not been particularly windy and were traditionally "calmer" months.
"In November and December, it was windier and we had very good production out of the machines, so hopefully that will continue once the wind picks up again."
Each generator operated independently and could generate a maximum of 750kW, enough to provide power for between 250 and 300 households.
The towers are sited between the company's Horseshoe Bend hydroelectric power station and dam.
Meanwhile, construction of the company's newest hydroelectricity station, on the Teviot River, is proceeding well.
The Kowhai station should be operational by June and generate a maximum of 1.9MW.
It is located 3.5km east of Roxburgh and will be the company's sixth power station on the Teviot.
Three-quarters of the 1.3km pipeline had been installed and the powerhouse was 75% completed, Mr Dowling said.
The turbine and generator were in storage, ready to be put in place.
The new station, named after kowhai trees in the area, will take water from the Marslin dam, via a pipeline, down a penstock to the generating station on the banks of the Teviot River.
Pioneer owns and operates 12 power stations throughout Central Otago and Southland.