The City of Perth is the capital and largest city in Western Australia and the fourth most populous city in Australia with a population of 1.7 million. Perth has a Mediterranean climate with average summer high temperature of 88 degrees F, often exceeding 100, and sometimes reaching 115. Perth Council House is an historic 100,000 sq. ft. commercial building owned by the City of Perth and houses its administrative offices. Perth Council House contains an outdated and limited control system and mechanical plant. The last substantial plant and controls upgrade occurred in 1999. Despite this, it was crucial for the facility to reduce overall power demand as well as reduce peak loads in response to external parameters such as utility company-created Demand Response (DR) programs.