Established in 1838, Virginia Commonwealth University (WCU) in Richmond, VA, is dedicated to discovery and creativity. With a diverse student enrollment over 30,000, it fosters strength in the bold and unconventional, is ranked a top 100 research university and home to a no.1 public graduate arts school.
In July 2019, WCU designated the Engineering and Utilities building at 700 Grace Road as a pilot building for Tune® Filter (originally named T7 EMI Facility Filter) installation. One of the older buildings on campus, it has undergone multiple renovations over the years with more sub panels per square foot than is typical for a building of its type. This required the installation of 17 Tune® Filters, where a more common setting would only require seven or eight. For the pilot installations confidence factor, additional pre-pilot data for weather normalization was collected for comparison.
During this pilot period, raw energy usage resulted in a 9% KWh savings, and recorded a 10% reduction in electrical consumption, or 12% as weather normalization was factored in.
WEATHER NORMALIZATION NOTES
Fall and summer are two seasons each year when consumers shift from air conditioning to heat. These seasons are also the lowest consumption times each year.
“Normalizing for weather” takes a 20+ NOAA history of an area and smooths the annual weather variations. A 12-month pre-history of electricity consumption to the pilot period is then used to create a ‘consumption pattern’ for the building. This along with the confidence factor that the consumption can be predicted for future periods before and after the pilot period.
We use trusted algorithms from third-party engineering groups to take the historical and the pilot period data to compare with the predicted consumption, so that the pre-pilot period and the pilot period are both weather normalized for comparison. The confidence factor for the VCU, 700 Grace Road building is over 96% that our model is accurate.
Dominion Power is subject to the VA Public Service Commission rate structure,which has limited increases in KWh while approving increases in the peak demand charges subject to primarily commercial consumers. Since the peak charges are not broken out distinctly on the power bills, they range between $825 to $950 of each monthly bill examined. These charges change annually.