maintenance and repair of energy systems, namely, power and lighting systems, telecommunication systems, automation systems, namely, industrial and building control and monitoring systems and electronic and physical security systems, comprised of computer hardware, power equipment, security monitoring equipment, life safety equipment, and/or communication network equipment

custom construction and building of energy systems, namely, power and lighting systems, telecommunication systems, automation systems, namely, industrial and building control and monitoring systems and electronic and physical security systems, comprised of computer hardware, software, power equipment, security monitoring equipment, life safety equipment, and/or communication network equipment

engineering services relating to energy systems, namely, power and lighting systems, telecommunication systems, automation systems, namely, industrial and building control and monitoring systems and electronic and physical security systems; maintenance and repair of energy systems, namely, power and lighting systems, telecommunication systems, automation systems, namely, industrial and building control and monitoring systems and electronic and physical security systems, comprising computer software