51 Welsh firms employing nearly a thousand people have been involved in the first year of constructing Pen y Cymoedd.
On Thursday (5 June) local interests visited the Pen y Cymoedd site to see the works for themselves.
Piers Guy, Head of Development & UK Country Manager for Vattenfall, said: "When we set out developing Pen y Cymoedd seven years ago we were told by the communities around the site that the wind farm must deliver a lasting benefit to local people. With that loud and clear message we were determined to deliver. I think we are achieving that with job creation, skills development and community investment like the one at the nearby world-class mountain bike trail."
Erik Rozendal, Head of Project Execution Onshore for Vattenfall, added: "We are building two onshore wind farms in the UK at the moment. Both Clashindarroch in Scotland and Pen y Cymoedd are shaping up to be exceptional wind farms in their own way. Both have good safety records, the sites are in good condition and we remain on schedule. I would also like to commend all those who are working on both."
At 18 turbines, Clashindarroch, in Aberdeenshire, will see first power this year or early next year. Pen y Cymoedd is expected to generate first power in 2016.
Watch the aerial video to see the Pen y Cymoedd and its surroundings
Read about Pen y Cymoedd
Read about Clashindarroch