WTA provided design of the new Williams Companies central plant. The central plant provides cooling and heating energy for the new office tower, the existing Williams Resource Center and the existing BOK Tower. The project included:

• A 12,500-ton chiller plant that provides for N+1 redundancy of all crucial elements. The system is composed of a mixture of water chilling technologies including centrifugal brine chillers, centrifugal water chillers, ice storage, and absorption water chillers. The plant is designed to be optimized by operating different chilled water producing equipment to reduce the overall peak electrical load thereby significantly cutting operating costs.
• Four 820 kW natural gas engine generators are base loaded for the purpose of reducing utility electrical requirements.
• A natural gas fired boiler plant (four 300 HP flextube boilers) provides heating hot water to the campus through a variable flow distribution system
• Pumping systems for hot and chilled water systems utilize variable flow technology through a primary-secondary-tertiary design
• Central building automation system monitors and controls all equipment to maximize efficiency, reduce operating costs and monitor all facets of plant operation.