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California Department of General Services
CALIFORNIA DEPARTMENT OF GENERAL SERVICES
Turnkey retrocommissioning (RCx) at 14 State of California facilities delivered nearly $2 million in annual cost savings while improving operations and indoor air quality.
In 2004, the Governor of California signed Executive Order S-20-04, which directed state agencies to reduce building energy use by 20%. Acknowledging that retrocommissioning (RCx) is a cost-effective way to achieve energy savings in existing buildings, the Executive Order and its accompanying Green Building Action Plan required all state buildings over 50,000 square feet to undergo a RCx process. Over the following five years, Enovity completed RCx of 14 state facilities totaling approximately 3.5 million square feet.
The RCx process focused on improving energy efficiency and space comfort through adjusting building automation system (BAS) setpoints, optimizing sequences of operation, and fixing hardware and software deficiencies. We employed extensive BAS trend analysis and whole-building calibrated energy simulations to identify and quantify energy and operational improvements. The scope of work included implementation of the RCx measures and measurement and verification (M&V) of energy savings to obtain utility incentives.
Highlights of the results included: