AUBURN – Jon Riley, a resident of Auburn, has joined Taggart Construction in Freeport as an energy auditor/specialist. Dedicated to the expansion of energy efficient, sustainable building practices through LEED and Energy Star programs, Riley has coached builders and architects across Maine in the “House as a System” building approach. He is a member of the Northeast Home Energy Rating Systems Alliance, Residential Energy Performance Association and the Maine Indoor Air Quality Council. He is also a nationally certified HERS rater.