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Highlights:
- Ofwat announces a 36% average increase in water bills by 2029-30, coupled with £104 billion in sector upgrades.
- Pennon Group secures a 0.3% cost of capital uplift and £4.5 billion expenditure allowance for South West Water.
- Southern Water faces the steepest hike with bills rising 53%, while Wessex and Northumbrian see the smallest increases at 21%.
The UK’s water companies saw mixed market reactions as Ofwat released its final price and investment determinations for the regulatory period through 2029-30. Despite a challenging landscape, shares in Pennon Group PLC (LSE:PNN, OTC:PEGRY), Severn Trent PLC (LSE:SVT), and United Utilities Group PLC (LSE:UU.) rose, reflecting investor optimism about the outcomes.
Bills and Investments: Key Changes
On average, household water bills are set to rise by 36% by 2029-30, equating to an additional £31 annually. This increase is part of a broader £104 billion sector-wide investment plan aimed at reducing sewage spills, improving leakage rates, and ensuring secure drinking water supplies.
Regionally, customers in Southern Water’s service area will experience the sharpest increase, with bills climbing 53% to £642 annually. In contrast, Wessex and Northumbrian Water customers face the smallest increases at 21%.
Pennon Group's Optimistic Outlook
Pennon Group, which owns South West Water, celebrated the determination, highlighting a 0.3% uplift in its cost of capital. This adjustment allows the company greater financial flexibility and complements a £4.5 billion expenditure allowance for infrastructure improvements. Pennon projects revenues of £4.4 billion for South West Water and £0.4 billion for subsidiary SES over the regulatory period.
Despite controversies over sewage dumping along its coastline, Pennon expressed confidence in its “outstanding” business plan being recognized by regulators. However, the company’s reputation remains under scrutiny following a £16 million compensation payout related to a water poisoning incident in Brixham over the summer.
Cautious Responses from Other Providers
United Utilities took a measured approach, stating it needed more time to review the determination thoroughly. Severn Trent has yet to comment officially but is set to implement a 47% rise in bills, taking the annual average to £583.
Focus on Sector-Wide Upgrades
Ofwat’s chief executive David Black emphasized the transformative impact of the new regulatory framework, which aims to modernize the sector significantly. He noted that the planned investments would “deliver a significant reduction in sewage spills, further reductions in leakage, and drive up service for customers.”
Improvements include extensive infrastructure upgrades, cleaner rivers and seas, and enhanced resilience in long-term water supply systems.
Investor Sentiment and Future Outlook
Shares in water companies rose following the determination. Pennon Group led with a 3.3% gain, followed by Severn Trent at 1.8% and United Utilities at 1.1%. The market’s positive response reflects a sentiment that the sector has navigated Ofwat’s regulatory hurdles relatively well.
As companies adjust to the new framework, the challenge lies in balancing rising costs with public and political scrutiny over environmental and service performance.
