Pennon Group's price control deliverables on track for 2025/26 with programme efficiencies being secured as delivery progresses, according to its latest trading update for the period from 30 September 2025 to 9 March 2026.

The trading statement says wastewater performance continues to improve year on year, reflecting underlying progress despite the exceptional storms and rainfall in the second half of the financial year. Pennon’s Pollution Incident Reduction Plan continues to deliver tangible improvements with a c.40% reduction year on year on pollutions and normalised pollutions reduced by c.55%[.

Storm overflow use also reflects a 17% reduction over the past year, with spill duration reducing c.25%. Pennon said this reflects substantial investment in infrastructure, despite South West England receiving around 150% of average rainfall in November and December.

In Water Services, water quality performance remains strong with upper quartile performance in South West Water and SES Water. Water resources now exceed Pennon’s target position, aided by increased resilience and high rainfall. Power outages during Storm Goretti and Storm Chandra resulted in a widespread impact on South West Water operations. The update says a rapid operational response minimised customer disruption, although required increased activity in respect of mains bursts and leakage remediation.

However, due to the exceptional and sustained rainfall creating operational pressures, ODI performance across water and wastewater for the full year 2025/26 is anticipated to result in a net ODI penalty position. A 7% RORE targeted over AMP8, with financing and capex efficiencies for FY26 partially offset by net ODI penalties

EBITDA is increasing by c.55% year on year, despite weather-related cost pressures and higher costs in the first year of the regulatory cycle Underlying profitability is within the range of market expectations for 2025/26, albeit at the lower end

Financial performance for the full year 2025/26 remains on track to deliver a robust return to profitability, notwithstanding operational cost pressures, with underlying profitability for the full year anticipated to be within the range of market expectations, albeit at the lower end.

The update says a robust liquidity and balance sheet position supports the ongoing funding of the delivery of Pennon’s largest ever capital programme.

Pennon Group mobilised early for the AMP 8 capital programme and its Year 1 Price Control Deliverables remain on track. Efficiencies are being successfully realised as projects move through design, whilst investment in asset health through base maintenance will allow the Group to ensure strong delivery of outcomes as the programme progresses.

Regulatory investigations

The update says progress is being made to draw regulatory investigations to a close as follows:

The Environment Agency prosecutions in respect of wastewater incidents dating back to 2015-2021 are progressing through the relevant court process and are expected to conclude these during 2026.

The DWI court process in respect of the 2024 water quality incident is progressing, and is expected to conclude during Summer 2026.

“We continue to support the relevant authorities with their investigations,” Pennon said..

Pennon Power

Two renewable generation sites within Pennon Power are now energised, Dunfermline in Fife and Cullerlie in Aberdeenshire and the remaining sites are progressing toward connection. When all four sites are operational by the end of FY27, Pennon Power's renewable energy portfolio will generate the equivalent of 40% of the Group's total consumption and the portfolio remains on track to deliver returns in line with the investment case.

As announced on 10 February 2026, Keith Haslett will join the business as Chief Executive Officer effective from 1 April 2026.The Group’s full year results for 2025/26 will be announced on Tuesday 2 June 2026.