Aegis Critical Energy Defence Corp., an energy technology development company, provides battery energy storage systems in Canada. The company offers battery energy storage container systems; stored energy; and pole mounted configuration services. It also involved in the research, engineering, design, and development of advanced energy systems and quantum technology secure energy management systems; and assembling lithium iron phosphate battery systems, as well as inverters. It has an agreement with Malahat Battery Technology Corp and Quantum eMotion Corp. for the development of energy storage and defense systems for critical infrastructure; and integrated AC plug-and-play BESS. Its products are used for data center, utility, commercial, industrial, residential, marine, and microgrid applications. The company was formerly known as Energy Plug Technologies Corp. and changed its name to Aegis Critical Energy Defence Corp. in November 2025. Energy Plug Technologies Corp. was incorporated in 2010 and is headquartered in Vancouver, Canada.