The ComEd Energy Efficiency Program is seeking qualified engineering firms to participate in its closed network of service providers for its Retro-Commissioning (RCx) Offering. Service Providers are tasked with bringing this valuable offering to eligible facilities more than 50,000 sq. ft. in size and between 100 kW and 10,000 kW peak demand. Facility types include commercial office, healthcare, retail, hospitality, lodging and public buildings. Service Providers are paid for full RCx studies of these facilities, with the ultimate goal being customer implemented measures that create cost-effective energy savings.