The 25×20 Voluntary Energy Benchmarking Campaign challenges buildings in the St. Louis Region to benchmark their energy use. Energy benchmarking is the key to unlocking potential energy and cost savings. Since the campaign was launched, businesses, local governments, houses of worship, schools, and institutions have pledged to benchmark their energy use! 25×20 participants include Clayco, now featured in a benchmarking case study.
Clayco has been using ENERGY STAR Portfolio Manager to benchmark their St. Louis office since 2007. Using this tool gave them a baseline, as well as the motivation to raise their score. As a result of energy saving strategies and building improvements that they have implemented since 2007, their ENERGY STAR score has more than doubled. Clayco has already met their goal to reduce their energy use 25% by the year 2020!
STRATEGIES AND RESULTS
Four years ago, Clayco implemented on-going commissioning of the building, and has more recently started monitoring-based commissioning (Both of these commissioning strategies are new paths for enhanced commissioning in LEED v4). Through monitoring-based commissioning, they were able to realize energy savings with improvements to their economizer and morning warm up controls. They achieved even greater energy savings by updating their 1994 HVAC building management system programming with the latest 2016 energy savings controls, without any added cost.
Since taking the 25×20 Energy Benchmarking Pledge, they have seen months with as much as a 40% energy savings from their 2013 baseline. This amazing reduction in energy usage has helped Clayco reach their 25×20 goal several years ahead of schedule. They will also be close to ENERGY STAR Certification by the end of the year.
As well as energy savings, there have also been improvements to the interior environment including: greater amounts of outdoor air, faster regulation of temperature to within the thermal comfort zone, improved acoustic quality, and more responsive thermostat control. Through monitoring-based commissioning, potential issues have been resolved before they become an occupant issue. Clayco has been implementing changes based on user feedback, and has enough feedback to conclude that user comfort has increased along with the energy savings.
Clayco is a full-service, turnkey real estate, architecture, engineering, design-build and construction firm, which was founded in 1984. Clayco has over 1,645 employees, offices in Chicago and St. Louis, and projects across the country.
You can view the full case study online here. Visit the 25×20 page of our website to see a full list of participants, browse other benchmarking case studies or take the 25×20 pledge! Contact Chapter staff at firstname.lastname@example.org to be featured in a benchmarking case study.