The State of Maine and the Maine Public Utilities Commission commissioned Harriman to conduct a study to determine the condition of State of Maine buildings and the potential to save energy costs by implementing improvements to the building envelope, lighting, and HVAC systems of the buildings. The results of the study helped to define the scope of potential improvements and the associated costs to upgrade state buildings to modern energy standards. The results of the study also helped to prioritize what improvements to make based on their payback.
Energy modeling software was used to perform calculations on the buildings before and after implementation of appropriate energy conservation measures (ECM) intended to reduce energy consumption. Building data and energy improvements were cataloged in a computerized database giving the State of Maine a user friendly tool to access and sort information. The end result was a measurable benchmarking system of the best to worst performing buildings on a square foot basis to establish a priority list. Also documented in this database were code and life safety concerns.
This study was limited to buildings with floor areas of 10,000 square feet (sf) or more due to the quantity of buildings (3,659 buildings were originally included in the database survey). Building types included community college and university buildings, office buildings, transportation facilities, libraries and archives, and any other state owned property. For these buildings, the energy calculations indicate that about $70,000,000 of energy improvements would return the original investments within twenty years.