Repair or maintenance of power generators; electrical repairs, engineering, furnishing and installation of emergency generator and co-generation plants, data center facilities, telecom direct current plants, uninterruptible power supply turn-key installations; battery system replacement; site survey and power audits; single point failure analysis; forensic power investigation; facility power evaluation; facilities systems management; power equipment service; installation, maintenance and repair of critical power systems, namely, uninterruptible power supply systems, automatic transfer switches, switchgear, battery back up systems, generators, control panels, and power distribution related to data center and emergency power back up systems for information technology and critical buildings; installation of electrical and generating machinery; preventive maintenance and emergency services for uninterruptible power supply power systems, rotary uninterruptible power supply systems, telecom direct current power plants, 48 volt direct current rectifier systems, 48 volt direct current inverter systems, battery back-up systems, emergency generator systems, automatic transfer switches, power distribution systems, remote monitoring systems, uninterruptible power supply reconditioning and refurbishment, and disaster and recovery support