Chile's 115MW El Arrayán running

The 115MW El Arrayán wind farm in Chile is now fully-operational, said developer Pattern Energy.

US-based Pattern said the project – which uses 50 Siemens 2.3 MW wind turbines – is the country's largest and its first wind venture outside North America.

The wind farm, claimed by Pattern to be South America's largest, is sited 400km north of Santiago on the Chilean coast and will meet the power needs of about 200,000 homes.

Pattern will operate El Arrayán and retains a 31.5% stake in the project. Co-investors include Antofagasta Minerals, which will take about 70% of the wind farm’s output under a long-term supply deal.

Pattern CEO Mike Garland said: "We were drawn to Chile for its robust and stable economy, its electricity pricing in US dollars and its aggressive policy to expand renewables, given limited domestic energy resources.

“The project is one of the best wind sites in all of Chile.”