Pennon Group

What Pennon Group does

Pennon Group plc is a UK-regulated water and wastewater utility infrastructure holding company headquartered in Exeter. Founded in 1989 and listed on the London Stock Exchange (ticker: PNN) as a FTSE 250 constituent, the group operates through wholly-owned subsidiaries South West Water, Bristol Water, Bournemouth Water, and SES Water, serving approximately 4.4 million customers across South West England, Bristol, and Kent/Surrey. The group also operates Pennon Water Services and Source4B for business water retail.

The core technology is the physical water and wastewater network infrastructure, supplemented by proprietary operational systems including the Upstream Thinking catchment management programme (covering 95% of drinking water catchments), Event Duration Monitoring on 100% of storm overflows, and the unique WaterShare+ customer ownership model that allows customers to hold shares in Pennon Group. Research capability is anchored in the CREWW joint venture with the University of Exeter, with £21M committed to AI applications, PFAs/microplastics research, and nature-based solutions. ESG credentials are industry-leading: #1 of 46 global water utilities per Sustainalytics, first-time CDP Climate A List inclusion, and longest-held Fair Tax Mark in the water sector.

The business model is fundamentally a regulated monopoly. Revenues are set by Ofwat through periodic Asset Management Plan (AMP) price reviews, with the current PR24 cycle covering 2025-2030 and providing inflation-linked returns on regulated capital value. Approximately 4.4 million residential customers plus non-household business customers generate subscription-recurring regulated revenue. Growth has been driven primarily through acquisitions (Bristol Water for £425M in 2021 and SES Water for £89M in 2024) and tariff uplifts, supported by an active capital programme including a £490M rights issue in 2025 and a £400M green bond. The 2020 divestiture of Viridor sharpened the group into a pure-play water utility.

Name

Pennon Group

Legal name

Pennon Group Plc

Website

https://pennon-group.co.uk

Company type

Public

Founded year

1989

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Pennon Group plc is a UK-regulated water and wastewater utility holding company operating South West Water, Bristol Water, Bournemouth Water, and SES Water to serve approximately 4.4 million customers across South West England, Bristol, and Kent/Surrey under Ofwat regulatory oversight.

Ownership category

akta.pro rank

Product category

Water and Wastewater Utilities

NAICS

Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (22131)

SIC

Water Supply (4941)

akta.pro primary industry

Water Supply & Wastewater Utilities Administration (BPAIACAG)

akta.pro secondary industry

NRW Data Management & Water Balance (IWA Methodology, GIS/SCADA Integration, Digital Twins) (EUANAKAJ)

Keywords

• Water utility services
• Wastewater treatment
• Regulated water supply
• Business water retail
• Environmental infrastructure

Headquarters

HQ city

Exeter

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Infrastructure, Personnel

Revenue model

1. Regulated Water and Wastewater Services: Revenue from regulated tariffs set by Ofwat for South West Water, Bristol Water, Bournemouth Water, and SES Water providing water and wastewater services to approximately 4.4 million customers. Revenue is determined through periodic price reviews (AMP cycles) with inflation-linked returns on regulated capital value.
2. Water Retail Services: Business water retail services through Pennon Water Services and Source4B, providing water management needs for business customers in the non-household retail market opened to competition.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Pennon Group plc is a UK environmental utility infrastructure holding company that owns and operates regional regulated water and wastewater businesses (South West Water, Bristol Water, Bournemouth Water, SES Water) serving approximately 4.4 million customers across South West England, Bristol, and parts of Surrey and Kent. The group also operates Pennon Water Services (Source4B), a business water retail service for non-household commercial customers.

Product overview

Pennon Group is a UK-based water and wastewater utility company operating a multi-brand portfolio across two core business segments: Water and Wastewater services (serving residential customers through regional brands including South West Water, Bristol Water, Bournemouth Water, and SES Water) and Water Retail Services (serving business customers through Pennon Water Services). The company also maintains WaterShare+, a customer ownership and engagement platform. Pennon Group provides water supply, wastewater treatment, and related environmental services to approximately 4.4 million customers across Cornwall, Devon, Dorset, Somerset, Bristol, Bournemouth, and Southeast England.

Differentiator

Problem solved

Functional benefit

Products and services

• South West Water Regulated water and wastewater services for Cornwall, Devon, and parts of Dorset and Somerset, providing drinking water supply, wastewater collection, and treatment to approximately 1.7 million people.
• Bristol Water Regulated water services for the Bristol region, acquired by Pennon Group for £425 million, serving approximately 1.2 million customers with potable water supply.
• Bournemouth Water Regulated water services brand operating in the Bournemouth region under the Pennon Group portfolio.
• SES Water Regulated water services for the Kent and Surrey regions, providing drinking water supply to customers in South East England.
• Pennon Water Services (Source4B) Business water retail services for non-household commercial customers, providing water management, supply, and retail services to business customers in the competitive retail market.
• WaterShare+ Unique customer ownership and engagement programme allowing Pennon Group customers to hold shares directly and participate in open customer panel meetings for accountability.

Quantifiable outcome

• 17% reduction in storm overflow spills, 25% reduction in spill duration, approximately 6,000 spills avoided in 2025/26
• +6 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

15 partnerships are on record, tiered core and minor.

• University of ExetercoreStrategic or Co-development Partner · 1 January 2021CREWW (Centre for Resilience in Environment, Water and Waste) joint venture research partnership with £21 million committed capital and research investment. Academic collaboration across computer science, engineering, bioscience, and social science schools. Research themes include AI for groundwater infiltration reduction, PFAs and microplastics investigation, and nature-based solutions. Partnership dates back to 2006 with Upstream Thinking farming community programme.
• Natural EnglandcoreStrategic or Co-development PartnerPartnership for biodiversity initiatives, protected sites management, and species recovery. Works on river connectivity, invasive non-native species management, and ecological condition improvement across catchments.
• Environment AgencycoreStrategic or Co-development PartnerRegulatory partner for environmental compliance. Supports protected sites management and species recovery initiatives. Provides specialist insight for WaterShare+ independent advisory panel.
• South West Lakes TrustminorStrategic or Co-development PartnerCharitable partnerships opening access to lakes and reservoirs for health and recreational benefits to thousands of people.
• Supply Chain Sustainability SchoolminorStrategic or Co-development PartnerPartner committed to upskilling supply chain and colleagues across key sustainability topics.
• Slave-Free AllianceminorStrategic or Co-development PartnerMembership to develop tailored processes and controls to prevent modern slavery, providing external expertise.
• Armed Forces CovenantminorStrategic or Co-development PartnerCommitment to fair treatment of the armed forces community.
• 10,000 Black Interns ProgrammeminorStrategic or Co-development PartnerSix-week paid placements broadening access to professional experience for Black undergraduates and postgraduates.
• Change the Race RatiominorStrategic or Co-development PartnerInitiative aligning ambitions for diverse leadership with nationally recognised standards through annual benchmarking and data disclosure.
• Water Resources West Country Water Resources GroupcoreStrategic or Co-development PartnerCore member of group established in 2017 to allow improved collaboration in water resources management in the South West of England.
• Water UKminorStrategic or Co-development PartnerCollaboration with Water UK on work with Government and wet wipe manufacturers to avoid non-degradable and plastic-containing wipes from being marketed as 'flushable'.
• Consumer Council for Water (CCW)coreStrategic or Co-development PartnerWaterVoice accountability sessions launched across sector. Provides specialist insight for WaterShare+ independent advisory panel. Represents customer interests.
• Link Group / MUFG Corporate Markets LimitedcoreImplementation/ SI/ Consulting PartnerRegistrar services for share administration, dividend payments, and shareholder communications. Administer DRIP and electronic communications.
• AssetTrace+minorImplementation/ SI/ Consulting PartnerAsset reunification programme managed by Link Market Services to contact shareholders with unclaimed dividends over 12 months old.
• JacobscoreImplementation/ SI/ Consulting PartnerIndependent ESG assurance provider conducting limited assurance in accordance with ISAE 3000. Also independently audits technical (non-financial) data relating to Outcome Delivery Incentives in Annual Performance Reports.

Scale indicators20 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Severn Trent: LSE-listed FTSE 100 water and wastewater utility serving 4.5M customers across the Midlands. Direct UK water peer with the same Ofwat regulatory model, AMP-driven capex programme, and inflation-linked RCV returns as Pennon.
• United Utilities: LSE-listed FTSE 100 water and wastewater utility serving 7M customers across North West England. Closest direct peer by scale, regulatory structure, and recent AMP7/AMP8 capital investment profile.
• Anglian Water: Privately-held UK water and wastewater utility serving 4.3M customers across East England. Direct Ofwat-regulated peer comparable in customer scale and capital intensity, with similar AMP-driven investment economics.
• Northumbrian Water: UK water and wastewater utility serving 2.7M customers across North East England, owned by CK Infrastructure Holdings. Direct Ofwat-regulated peer with similar regulated RCV mechanics and AMP8 investment cycle.
• Yorkshire Water: UK water and wastewater utility serving 5M customers across Yorkshire, currently under consortium ownership. Direct Ofwat-regulated peer with comparable regulated-asset business model.
• Dwr Cymru Welsh Water: Not-for-profit Welsh water and wastewater utility serving 3M customers. Direct UK water peer with the same Ofwat-style regulatory framework, though operating under Welsh Government arrangements.
• Thames Water: Largest UK water and wastewater utility serving 15M customers across London and Thames Valley, currently in special administration. Direct Ofwat-regulated peer whose financial distress is shaping sector-wide regulatory and political dynamics relevant to all UK water companies including Pennon.
• Affinity Water: Largest UK-only water supply company serving 3.6M customers across the South East. Direct UK water peer (no wastewater) and notably the prior employer of Pennon's incoming CEO Keith Haslett, making it particularly relevant for management continuity benchmarking.

Broad incumbents

• American Water Works Company: Largest US-listed water and wastewater utility (NYSE: AWK) serving 14M+ people. Broad incumbent peer with a regulated rate-base model analogous to Ofwat's RCV framework, providing listed-equity benchmarking for Pennon's regulated returns.
• Veolia Environnement: Global environmental services group with water utility operations in multiple geographies. Broad incumbent that competes for outsourced municipal water contracts relevant to Pennon's business water retail arm (Pennon Water Services / Source4B).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/pennongroup
• Facebookfacebook.com/profile.php

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A11 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Pennon Group