2019 ASHRAE TECHNOLOGY AWARD CASE STUDIES Sports Complex Saves Big With Retroļ¬t Using a performance contracting approach, a large Montreal sports complex reduced its energy consumption by over 30%. ALL PHOTOS COURTESY ECOSYSTEM ASHRAE JOURNAL BY MAURICE LANDRY, ENG., ASSOCIATE MEMBER ASHRAE; DOMINIC DESJARDINS, ENG., ASSOCIATE MEMBER ASHRAE; OLIVIER MATTE, ENG., MEMBER ASHRAE