The company contracted to provide concrete foundations for Otago's first wind farm at Mahinerangi is nearly finished the job, with nine of the 12 410cu m bases in place.
Work on the $75 million, 36MW wind farm, beside the Waipori hydro-generation scheme, began in September.
The farm will produce its first power in February next year, and stage one of the project will be fully commissioned by May, after which electricity will be fed directly into a line to Dunedin's Halfway Bush substation.
Firth Industries won the contract for the concrete bases in June, and Dunedin-based operations manager Aaron Charteris said there were just three more to be completed, with the work set to finish by Christmas.
The company, which provided concrete for the Dunedin Chinese Garden and has a contract for work at the Dunedin Centre and town hall redevelopment, would provide about 5000cu m of concrete at Mahinerangi.
Mr Charteris said revenue for the work came to about $1.7 million for the company.
Two mobile concrete plants were used, and 14 workers from Firth's Green Island plant in Dunedin, and plants in Timaru, Geraldine and Fairlie, were transported to the site for two days a week for the pouring of the concrete.
The wind farm, known as Puke Kapo Hau, is expected to inject about $12 million into the local economy and employ up to 30 people during a seven-month construction phase.
