Wasion Holdings Limited is an investment holding company that develops, produces, and sells energy metering and energy efficiency management solutions for energy supply industries. It operates in three segments: smart grid solutions, AI-integrated energy efficiency solutions, and digital energy services. The company also manufactures and sells energy saving products, water, gas and heat meters, switchgears, electronic components, smart distribution devices, and related services, as well as trades power meters. It operates in the People's Republic of China, Africa, the United States, Europe, rest of Asia, and internationally. Formerly known as Wasion Group Holdings Limited, it changed its name to Wasion Holdings Limited in June 2018. Founded in 2000, it is headquartered in Wan Chai, Hong Kong, and is a subsidiary of Star Treasure Investments Holdings Limited.