Earthworks for the final two holes to house the Mt Stuart wind-farm turbines are nearing completion, ready for the arrival of the Chinese-built units in July.
Pioneer Generation's chief executive, Fraser Jonker, said work started on the nine-turbine wind farm in April and was making good progress.
"Seven of the nine holes have been completed and we're doing steelwork for the foundations.
We've been quite lucky. The weather hasn't really affected us."
Mr Jonker said staff went to China two weeks ago to inspect nine G52 turbines and were happy with what they saw.
The turbines were made by Spanish-based firm Gamesa at its plant in China.
"They should be loaded into ships this past weekend and arrive in New Zealand by the end of July," he said.
The 850kW wind-turbine generators, with a three-bladed rotor 52m in diameter, would each produce 2845MWh per annum and start producing power when the wind speed reached 14.5kmh, gaining maximum power at wind speeds above 61kmh.
Resource consent was granted last year for the 7.65MW wind farm on the southwestern side of the Manuka Gorge.
The wind farm would be operating by the end of October and Pioneer would run tests in November before the farm was commissioned in December, Mr Jonker said.
It aimed to produce enough electricity to meet the annual energy needs of about 3350 homes and would feed it into the grid through the OtagoNet network by December this year.
