RENEWABLE ENERGY: CHILE: 115 MW wind plant has the capacity to power 200,000 homes in the region

Michelle Bachelet, the president of Chile, together with Jean-Paul Luksic, chairman of Antofagasta Minerals SA (“AMSA”) and Mike Garland, CEO of Pattern Energy Group Inc officially opened operations at the 115 MW El Arrayán Wind facility in a grand opening ceremony at the project site, which is located 400 km north of Santiago on the coast of Chile. The El Arrayán Wind facility, which completed construction in June, will generate clean, renewable power equal to the needs of approximately 200,000 Chilean homes each year, according to the World Bank. The facility is utilizing 50 Siemens 2.3 MW wind turbines, which Pattern Energy is also using at other wind projects in Canada and the United States. El Arrayán Wind connects to the Sistema Interconectado Central's 220kV transmission system. The facility is located on approximately 15,320 acres of coastal land on a long-term lease with a single landowner. Pattern Energy owns 70% of the El Arrayán Wind facility, which it also operates. AMSA owns the remaining 30% minority stake. The project sells approximately 70% of its output to Minera Los Pelambres through a long-term fixed-for-floating hedge. The facility sells its remaining output into the Chilean spot market at the prevailing market price at the time of sale. In addition to its minority interest in the facility, AMSA is the controlling party of Minera Los Pelambres. "This project is important for our present and future energy needs, President Bachelet said. "El Arrayán is the biggest wind farm in Chile, and we are pleased at what we can achieve when we use the natural resources the earth has to offer. This project is another step toward meeting our energy agenda objectives." 1