Installation, maintenance, repair, and replacement of electrical power infrastructure, uninterruptible power supply systems, backup battery systems, battery cabinets, and cooling systems for data centers and mission-critical facilities; preventative maintenance of critical power infrastructure for data centers and mission-critical facilities; excluding installation, maintenance, or repair of computer server hardware, computer storage hardware, and computer networking hardware.

Engineering design services and technical consulting services in the field of facility-side electrical power infrastructure, uninterruptible power supply systems, backup battery systems, battery cabinets, and cooling systems for data centers and mission-critical facilities; excluding computer technology consulting, computer network design, electronic data storage design, server administration, cloud computing infrastructure services, and services involving computer server hardware, computer storage hardware, computer networking hardware, or information technology systems.