BOSTON--(BUSINESS WIRE)--At IDEA2015: Inspiring the Next Generation (June 28 – July 1, 2015), hosted by the International District Energy Association (IDEA), energy experts from around the world gathered to explore the latest trends and innovations in district energy, Combined Heat and Power (CHP) and microgrids for cities, communities and campuses. Marking its 106th annual conference, this year’s event featured more than 100 visionary speakers and over 950 attendees – representing 21 countries