A major energy-efficiency upgrade at Brookhaven National Laboratory is expected to generate more than $1.3 million in energy savings each year. In addition to direct cost savings, the energy-efficiency improvements will make the lab eligible for rebates (pictured) and other financial incentives.
The work was performed under a utility energy service contract (UESC) with National Grid and Siemens, under which National Grid facilitated $14.85 million in third-party financing. The laboratory will repay the loan over 10 years using the savings generated by the upgrades.
Under the UESC, Brookhaven worked with Siemens to upgrade lighting systems in 18 buildings, which included installing new fixtures and retrofitting existing fixtures, replacing existing lamps and ballasts with more efficient ones, and installing occupancy sensors and timers.
Siemens also replaced and enhanced energy management controls in nine buildings and installed a new high-efficiency 1,250-ton water chiller and related components at Brookhaven’s Central Chilled Water Facility.
The improvements are expected to reduce the Brookhaven’s annual energy intensity by approximately 11 percent compared to baseline measurements and help it meet its 30-percent energy intensity reduction goal for 2015.
Brookhaven’s is the first DOE UESC in more than 15 years, and is a departure from traditional contracts typically used at other DOE labs with private contractors for energy-saving projects. The project is expected to serve as a model for other laboratories throughout the DOE complex.
Work on the project began in December 2013 and was completed in May 2015.