The renewable energy produced there will supply 55,000 homes.
100 people are expected to be working on the Cloncreen Wind Farm Project by the end of the year.
The renewable energy produced there will supply 55,000 homes, with a direct investment of one million euro in the Offaly economy.
It will have a footprint of just 4pc on the site area, with 96pc being rehabilitated peatland and amenity.
Green Party Junior Minister Pippa Hackett says it's a great example of how moving from a brown to a green economy can benefit everyone.
Speaking following a visit to the site, she said the wind farm will help the country meet national renewable energy targets.