A 320,000 square foot Class A high-rise office building in Nashville, TN achieved LEED-EB Gold Certification. LEED-EB version 2.0 was utilized, which requires Retro-Commissioning (RCx) as a prerequisite for certification. SSRCx performed the RCx services during the LEED-EB performance period, and was contracted after building certification to utilize the Continuous Commissioning® (CC®)1 process to seek additional energy savings. The building was constructed in 1999 as a Core and Shell project and build-outs were done through 2001. By January 2008, a single company managed and occupied the facility. This paper describes the RCx process for LEED-EB v2.0 and the CC process after LEED Certification. Findings and implementation strategies for energy savings are presented for both processes.

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