Impax Environmental Markets plc is a United Kingdom-based investment company. The investment objective of the Company is to enable investors to benefit from growth in the markets for cleaner or more efficient delivery of basic services of energy, water and waste. It makes investments in quoted companies which provide, utilize, implement or advise upon technology-based systems, products or services in environmental markets, particularly those of alternative energy and energy efficiency, water treatment and pollution control, and waste technology and resource management, including sustainable food, agriculture and forestry. It invests in various sectors, including alternative energy, energy management and efficiency, transport solutions, sustainable food and agriculture, water infrastructure and technologies, resource efficiency and waste management, environmental services and resources, and digital infrastructure. Its investment manager is Impax Asset Management (AIFM) Limited.