Thirty-Six-Story Downtown Office Tower
Unlocking full value of new building automation system (BAS)
- A thorough energy use optimization assessment had never been performed at the 25-year-old, downtown, multi-tenant office tower, but the newly-appointed Chief Engineer was eager to enhance building operations.
- The building owner, recognizing the positive impact of energy cost reduction on the bottom line, was willing to invest in energy efficiency improvements.
- Property management completed a comprehensive building automation system (BAS) upgrade to enable more robust HVAC system performance trending.
- All of these factors contributed to the building becoming an excellent candidate for retro-commissioning.
- We helped the building owner navigate the application process to participate in the local utility’s retro-commissioning incentive program. An annual electricity savings target of 600,000 kilowatt-hours (kWh), or about 6% of base building load, was established for the project.
- After visiting the site, collecting and analyzing data, and developing preliminary ideas, we identified and recommended eight potential energy-saving opportunities with the potential to save over 1.5 million kWh annually.
- Management elected to implement seven of the eight measures. Employing the upgraded BAS, we demonstrated through measurement and verification that the measures actually achieved nearly a 1.3 million kWh annual reduction in electricity use, or double the original target, and double our initial estimate.
- With out-of-pocket costs for the seven measures totaling less than $4,000, simple payback was virtually immediate.
- Additional utility incentive funds were used to underwrite the cost of the eighth energy-saving opportunity. The building owner’s $49,000 investment in this single measure was projected to save nearly another 1 million kWh and over $70,000 annually.
- Our entire project helped management reduce annual energy use by 20% and annual energy costs by over $150,000.
Commercial Real Estate