ATE Energy International Co., Ltd. provides engineering, construction, and equipment maintenance services. It operates through the Construction, Electricity, and Others segments. The company offers marine engineering services, comprising seawater cooling systems, deep seawater engineering, ocean thermal energy conversion, desalination systems, offshore wind power cabling engineering, and maintenance services. It also engages in battery energy storage systems, environmental sustainability, waste-to-energy conversion, clean coal cogeneration, solar power, wind power, and hydropower generation businesses. In addition, the company offers medical products. Further, it provides transportation and infrastructure services, as well as is involved in the research, development, manufacturing, and trading of computer software, hardware, and peripheral equipment; and in the manufacturing and selling of data storage and processing equipment and electronic components. The company was formerly known as Accusys Storage Ltd. and changed its name to ATE Energy International Co., Ltd. in September 2013. ATE Energy International Co., Ltd. was incorporated in 1995 and is headquartered in New Taipei City, Taiwan.