Tarlton headquarters was the first LEED Silver project certified in the city of St. Louis. Since we built it in 2004, we have continued to make it more sustainable, not only improving its energy efficiency, but also making it more comfortable for our employees and visitors.
In 2011, Tarlton had installed a 25 kW, grid-interactive solar photovoltaic array on our rooftop with 112 solar modules and 56 microinverters to offset power drawn from the electrical grid. We also added three ceiling fans with 5-foot blades in our open work area, expected to save 25 percent of our energy during heating and cooling periods. We updated our high-bay lighting system with 28 induction lighting fixtures with 18-inch reflectors, and in August we will replace the lighting in our neighboring TEAM equipment and maintenance facility.
These upgrades are in addition to sustainable features including low-flow plumbing fixtures, a cistern to collect rainwater, and high-level indoor air quality highly achieved by efficient buildings systems and low-emission materials for wall coverings, floor coverings, ceilings and other finishes. Windows on the north façade reduce hot, harsh south and western sunlight and bring abundant light into the building, while also controlling glare.
A steel-frame structure with cast-in-place concrete, the building has a mezzanine that can be extended to create a full second floor. It is versatile and friendly, showcasing Tarlton's highly skilled construction techniques.