PPU established in 1999 the Renewable Energy and Environment Research unit as a core research basis in water, energy and environmental protection. In 2021, the university decided to expand the unit and establish the Centre of Excellence in Water and Environment Research and Services (CWEE) to respond to the increasing demand on research and education in these fields locally and globally. The center leads education, research, and services in the fields of drinking water, wastewater testing and treatment, renewable energy and climate change.