2RW consulted the American Library Association and the Library of Congress standards for long-term preservation when selecting options for improving the energy efficiency of the facilities. The following highlight some of the significant conservation opportunities 2RW engineers identified:

• temperature and ventilation scheduling with optimized start
• carbon monoxide control for parking garage ventilation
• air economizer
• variable volume range hood controls
• restoration and expansion of variable air volume controls
• ground source heat pumps
• decentralization from the Capitol Power Plant
• dedicated heat recovery chillers

Energy savings were analyzed using eQUEST, an hour-by-hour building energy simulation software program. 2RW engineers developed energy models which were calibrated to available utility data. The calibrated models served as the baseline against which each conservation measure was quantified.

2RW was able to find over $30,000,000 of energy efficiency projects resulting in over $3,800,000 per year of energy savings. If implemented, the conservation measures would have paid for themselves within the term of a performance contract.