Darien Crimmin is Vice President of Energy and Sustainability for WinnCompanies and is responsible for managing energy efficiency programs across Winn's portfolio of residential properties. Prior to joining WinnDevelopment, Mr. Crimmin worked for Harvard University's Office for Sustainability and managed the University's Green Building Services. He helped to develop Harvard's largest solar thermal installation, designed training modules for Harvard University's Operations Services and created utility measurement tools to track energy performance across the university.