SIMEC Atlantis Energy Limited engages in the design, construction, installation, testing, operation, and maintenance of power projects in the United Kingdom and Japan. The company operates through three segments: Power Generation, Turbine and Engineering Service, and Project Development. It is involved in the tidal power generation; designs, supply, and maintenance of tidal turbines and subsea connection equipment; hydro development; and provision of offshore and onshore construction services. In addition, the company offers project management and consulting, operations and maintenance, and financial services. The company was formerly known as Atlantis Resources Limited and changed its name to SIMEC Atlantis Energy Limited in June 2018. SIMEC Atlantis Energy Limited was incorporated in 2005 and is based in Edinburgh, the United Kingdom.