Green Tech Ventures Public Company Limited engages in electricity generation and property development activities in Thailand, Vietnam, and the Lao People's Democratic Republic. The company invests in, produces, and sells cannabis products for medical purposes; and invests in hemp. It is also involved in the cryptocurrency mining business, as well as investment, development, and construction of water supply projects; and solar power generation. The company was formerly known as United Power of Asia Public Company Limited and changed its name to Green Tech Ventures Public Company Limited in February 2023. Green Tech Ventures Public Company Limited was founded in 2000 and is headquartered in Bangkok, Thailand.