The Operating Engineers Trust (OET) worked closely with Pasadena Water & Power (PWP) to replace two 120-ton cooling compressors with high efficiency models at the Raymond Corson headquarters. PWP used the project to research the effectiveness of new Turbocor compressors for building cooling. The new system reduced compressor consumption by 64% and total energy use by 18.5%, saving 311,000 kWh of electricity and more than $43,000 annually. OET has hosted several open houses to show the technology in action, resulting in additional installations among PWP customers.