NI Water has announced a major £5 million investment in a sustainable solution to upgrade its Ballykelly Wastewater Treatment Works which maximises the use of renewables as part of an integrated solution.

The investment will provide a new sustainable wastewater treatment approach, utilising reed beds as part of the treatment process, together with a 100kW solar energy system to help power the new works with solar energy.
Sara Venning, CEO NI Water said:
“As the largest user of electricity in Northern Ireland, we are committed to finding innovative sustainable solutions to water and wastewater treatment that also harness renewable energy to reduce our expenditure on power.
“Ballykelly is one of many sites across the province where we are thinking outside the box, using a natural solution to wastewater treatment, combined with using a solar energy system to help reduce our energy use and carbon footprint.”
Infrastructure Minister Nichola Mallon added:
“I am pleased to see progress on this £5 million investment at Ballykelly Wastewater Treatment Works, which will deliver an upgraded treatment works for people living and working in the area.
“This scheme will improve future wastewater services for customers in the area, enhance the local environment and improve local watercourses by using an innovative integrated constructed wetland as an energy free final wastewater treatment filter process
“Continued investment in the water and wastewater services throughout Northern Ireland is essential to improving this critical infrastructure.”
“We need to urgently act to tackle the climate crisis and I commend NI Water for finding both sustainable and cost-effective solutions to reduce its operational impact. This is an example of how we all need to continue to work together across these islands to constantly seek out innovative ways of tackling the climate emergency and implement the necessary changes to address the significant challenges that lie ahead.”
Over an expected 25 year lifetime, NI Water expects the solar energy system at Ballykelly alone to save the business approximately £400,000. Trees will also be planted on the site, supporting NI Water’s ambitious target to plant one million trees over the next 10 years.
The contractor for the work is Maghera-based BSG Civil Engineering in partnership with Belfast-based RPS.
Sarah Venning continued:
“As the second largest landowner in Northern Ireland, our assets have the potential to be a catalyst for change across Northern Ireland’s energy and transport networks as a whole.
“This new way of thinking will be explored at our Power of Water event on 3 November planned in advance of COP26.”
The NI Water Power of Water free virtual event will be held on Wednesday 3rd November, 2021 – NI Water will issue a report on the day describing how the company has developed new ways of thinking about how it uses energy and how it can harness natural assets to generate and store power to add extra resilience to Northern Ireland’s energy system.


Hear how United Utilities is accelerating its investment to reduce spills from storm overflows across the Northwest.