Energy and water are among NC State’s most necessary and costly expenses. For more than a decade, the university’s campus-wide energy management strategies have enabled significant conservation of vital fiscal and environmental resources. The Annual Energy and Water Report provides an update on campus progress toward utility reductions, highlights specific projects and outlines strategies for the next fiscal year that will contribute to further reductions.
Total energy consumption per gross square foot peaked in 2008-2009 and has trended downward since. Compared to the fiscal year 2002-2003 baseline, this energy use intensity (EUI) has decreased by 34%.
In fiscal year 2016, NC State began utilizing reuse water supplied by the City of Raleigh on Centennial Campus. Reuse water, sometimes called reclaimed water or non-potable water, is wastewater treated to a high standard and reused instead of being discharged into a waterway. Reuse water provides a cost-effective and drought resistant supply of water for cooling towers, irrigation and toilet flushing. For total water consumption (potable and reuse), fiscal year 2019 marked a level 44% below the 2001-2002 baseline. Potable water consumption alone has decreased by 50%.
Fiscal Year 2019 Highlights
The following are highlights and accomplishments of energy efficiency strategies and energy-related projects implemented on campus during fiscal year 2019 (download the complete report):
Through the collaboration among business units within Facilities Division, Energy Management compiled the fiscal year 2018 Reinvestment Act claim for more than $3.2 million in energy savings. The Reinvestment Act of 2010, also known as NC House Bill 1292, allows NC institutions to capture a portion of energy and water savings for reinvestment in further conservation projects.
Energy Management successfully funded more than $1.3 million of campus energy projects that resulted in projected annual savings of $250,000. Multiple projects ranging from lighting upgrades to building controls improvements were completed through cost-sharing programs with campus partners.
Construction on Thermal Energy Storage (TES) at the Centennial Campus Central Utility Plant began in fiscal year 2019. TES will store 3.4 million gallons of chilled water and offset the need to operate chillers during the day when electricity prices are high.
Construction was completed on the Combined Heat and Power (CHP) project in the Centennial Campus Central Utility Plant. This is NC State’s second CHP project and is estimated to save approximately $1.6 million annually. Construction was funded through NC State’s fourth energy performance contract (EPC).
The in-house Commissioning Team’s work continues to improve the efficiency of NC State buildings through mechanical equipment calibrations, sequence adjustments and schedule implementations. Partnering with Building Maintenance and Operations technicians, the team has achieved more than $5 million in energy savings since 2013.