Pair of Large, Urban, Interconnected Office Towers
Searching for more energy savings after retro-commissioning
- A pair of office towers—one built in the late 1980s and the other in the early 1990s—had been combined into a single 2.5 million-square-foot investment property.
- Property management had enjoyed energy savings from a previous retro-commissioning project that focused on energy-saving opportunities that impact energy use during the cooling season. The building’s heating system, however, accounts for the majority of its energy use.
- Building engineers sought to generate additional energy savings by searching for opportunities that impact energy use during the heating season.
- The building owner had used a different firm to perform retro-commissioning but engaged us to provide monitoring-based commissioning (MBCx).
- We established protocols to share HVAC system performance data for points monitored by the building automation system (BAS). Using our software, we analyzed the data, highlighted anomalies, and began uncovering energy-saving opportunities.
- Although this project remains active and ongoing, we have already identified and helped implement two significant energy-saving measures, achieving annual electricity savings of more than 900,000 kilowatt-hours (kWh).
- Additional measures that are being implemented now should increase the total savings to more than 1.5 million kWh per year.
- Furthermore, we are currently conducting tests to track energy use by equipment that is not monitored by the BAS. This information could lead to much greater energy savings in the near future.
Service AreaMonitoring-Based Commissioning
Commercial Real Estate