Charisma Energy Services Limited, an investment holding company, engages in the generation and sale of energy and power generation services in Singapore and Sri Lanka. The company is involved in the ownership and leasing of hydropower generation equipment and accommodation modules. It also offers ship owning and chartering; shipping agency; and management services, as well as generates and supplies hydroelectric power. The company was formerly known as YHM Group Limited and changed its name to Charisma Energy Services Limited in November 2013. Charisma Energy Services Limited was incorporated in 1997 and is headquartered in Singapore.