Annual Report And Financial Statements

Overview

The report describes Southern Water's transition into a major 2025–30 investment programme, including £8.5 billion of planned spending and £3.3 billion for environmental projects. It reports 2025 gross operational emissions of 257.9 kilotonnes CO2e on a location-based basis and 266.3 kilotonnes CO2e on a market-based basis, alongside 496,255 MWh of energy use and 14.79% on-site renewable electricity generation. The Board explicitly oversees climate-related risks, sustainability and ESG performance through its committees.

Document

Report type: Annual Report with Sustainability Disclosures
Class: Embedded
Scope: Full report
Fiscal year: 2025
Period: 1 April 2024 – 31 March 2025
Publication date: 15 July 2025
Language: English
Pages
File size
Restatement: Disclosed

Standards

GRI
SASB
TCFD
ISSB
ESRS
Integrated Reporting Framework
GHG Protocol
EU Taxonomy
CDP

Commitments

UN Global Compact
UN Guiding Principles
Science Based Targets initiative

Materiality

Assessment
Basis

Assurance

Provider
Standard
Scope
Statement included
Metrics assured

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