The Chair of Manx Utilities says early feasibility work for a possible floating solar array on Sulby Reservoir has found no evidence of PFAS risk to drinking water under normal operating conditions.
The update came in response to a written Tynwald question from Dr Michelle Haywood MHK, who asked what assessment had been made of potential per- and poly-fluoroalkyl substances (PFAS) release from solar panels and the risk of contamination.
MUA Chair John Wannenburgh said the Authority has not yet decided whether to proceed with the project, but commissioned a water quality specialist as part of its initial studies.
The assessment looked at whether PFAS containing materials are used in some panel components and how they might enter the water.
It concluded that any release would be more likely to stem from deterioration or damage rather than the routine operation of intact panels.
Wannenburgh said no risk had been identified so far, but stressed that the evidence base is still developing. Any future decision would be guided by further technical scrutiny.
If the scheme moves forward, Manx Utilities says it would ensure appropriate material selection, including PFAS‑free panel options, along with baseline and ongoing water‑quality monitoring and compliance with Regulation 31 of the Water Supply (Water Quality) Regulations 2016.
“No proposal would proceed unless Manx Utilities was satisfied that all relevant water quality requirements had been properly addressed,” he said.
The full written answer can be found here.
