An Energy Review of Boston City Hall And Other Selected Facilities
Coinciding with our delivery of the City of Boston Energy Map, we performed a detailed study on Boston City Hall and selected other facilities to demonstrate savings potentials that can be identified solely through the main meter interval data provided to us by the City of Boston.
Likely due to the nature of the building and the people that it serves, Boston City Hall shows no noticeable demand response when the ISO New England grid is peaking during heavy summer cooling loads, and has reasonable set back positions at night and on weekend for a public space that is essentially "always on". With a peak summer demand in July 2015 of 2,409kW and a slightly more reasonable winter peak of 1,959kW in January 2015, the demand charges for this facility are on the order of 30% to 40% of the monthly electric bill based on our reasonable estimates of their supplier contracts. We developed an Opportunity Matrix that shows how a 3% reduction in the monthly peaks could save $15,000 per year and would affect fewer than 5 hours in an average week.
Later in the case study, we show how Blackstone School might save $13,000 per year by operating their CHP during summer peak cooling hours and how Boston Police Department Headquarters is "always on" based on its high base load and very high ratio of nights and weekend loads compared to occupied hours. We also notice that a common thread across the Boston Schools is that they are largely operating in an apparent school-year mode during the summer months and could benefit from certain ECMs that target the summer cooling season, even though the mythology would suggest that schools are closed for the summer. Finally, we also surveyed a few of the Boston Public Library buildings for good measure.
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