•   Driving Performance, Delivering Results.  

      Driving Performance, Delivering Results.  

1980s-Vintage Multi-Tenant Office Building

Mining large datasets to find hidden energy-saving opportunities


  • Management of a 43-story, 1.86-million-square-foot multi-tenant office building constructed in late 1980s sought an innovative path to greater energy efficiency.
  • Although the facility team had done an excellent job of maintaining occupant comfort while achieving ENERGY STAR and LEED Gold certifications, they had never pursued an HVAC system performance optimization strategy.
  • Building engineers lacked the data necessary to justify bold changes to HVAC operations, hampering their ability to achieve more ambitious energy reduction goals.
  • A well-executed monitoring-based commissioning (MBCx) could generate a tremendous amount of actionable data to justify energy-saving adjustments to the HVAC system.


  • The building owner engaged us to perform MBCx for an initial term of 18 months.
  • After establishing protocols for sharing HVAC system performance data, we began acquiring a stream of data for all monitored building automation system (BAS) points. We employed customized software to analyze the data; highlight anomalies; and, present evidence of energy-saving opportunities.
  • Over 24 months, we identified and helped implement seven HVAC operational changes, achieving annual electricity savings of nearly 2 million kilowatt-hours (kWh). With a cost of only $55,000, simple payback on the seven measures was less than six months.
  • Furthermore, we alerted building engineers to correct operating anomalies before they led to excessive wasted energy.
  • The building’s steadily increasing ENERGY STAR score and decreasing energy use intensity (EUI) demonstrated the power of our MBCx service to help the building owner achieve its goals.
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1980s-Vintage Multi-Tenant Office Building
1980s-Vintage Multi-Tenant Office Building

Building Type

Commercial Real Estate