Pattern Energy acquires controlling interest in El Arrayan wind project in Chile Pattern Energy Group acquired AEI's 38.5% net ownership interest in the El Array Wind project. The project, which was completed earlier this month and is now fully operational, is located approximately 400 km north of Santiago on the coast of Chile. At 115 MW, El Array Wind is the largest wind power facility in Chile and all of South America. The transaction increases Pattern Energy's ownership in El Array Wind to 70% with Antofagasta Minerals SA owning the remaining 30% minority stake. Pattern Energy paid a $45.25M purchase price to AEI. AEI's proportional share of project debt. Pattern Energy operates the project.