Environment and sustainability research being conducted by scientists at Bangor University has been given increased funding by the European Union (EU).
The £500,000 investment will go towards an ongoing study to examine the possibilities of using water storage systems to generate renewable energy.
Joining forces with staff from Trinity College Dublin, the Welsh researchers have established a system to generate power for the water industry to sell to the national grid.
The scientists have explored the possibility of using small hydropower turbines, which could be introduced to existing water treatment facilities.
Dr Prysor Williams, project leader at Bangor University, said: "The water industry is very energy intensive. This project could help reduce its associated environmental impact and economic costs."
Welsh Water, which has supported the ongoing research, recently commissioned three Advanced Digestion plants, which will produce energy from sewage sludge.
The new developments will reduce the company's carbon emissions by 40,000 tonnes per year.
Posted by Marc Casey