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prj_7119 - Natural Gas Supply (Non-domestic)

Southern Water Services Ltd.

This public procurement record has 3 releases in its history.

Award

16 Sep 2026 at 18:27

UK6 - Contract Award Notice
Tender

10 Sep 2025 at 10:23

UK4 - Tender Notice
Planning

14 Apr 2025 at 11:41

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

Southern Water Services Limited procured a single-supplier natural gas supply arrangement for its non-domestic portfolio. The requirement covers gas supplied to 19 sites across the South East of England, including Hampshire, the Isle of Wight, Sussex and Kent, with annual consumption of approximately 2.5 GWh. The portfolio may change before the contract starts, and sites may be added or removed during the contract under the agreed provisions. The buyer requires a fixed-price supply contract, with the ability to fix prices for 12-month periods, or multiples of 12 months, during the active term, subject to market liquidity. This is a utility-sector goods procurement for mains and natural gas, serving Southern Water’s operational sites.

The procurement is complete and was awarded through an open, single-stage competitive flexible procedure under the Procurement Act 2023. Brook Green Supply Limited was selected on 16 September 2026 for an awarded value of £3,600,000 gross. The awarded contract period runs from 1 October 2026 to 31 March 2030, with an extension option of up to five years by mutual agreement, potentially lasting until 31 March 2035. The original tender was evaluated 60% on technical quality and 40% on commercial price, with economic and technical conditions of participation. Tender submissions closed on 10 October 2025, enquiries closed on 26 September 2025, and the planned award decision date was 1 December 2025. A contract signature milestone was scheduled for 26 September 2026.

This award demonstrates recurring demand from Southern Water for a licensed non-domestic gas supplier able to manage a multi-site utility portfolio in the South East. A credible competitor would need an Ofgem licence, the operational capacity to supply around 2.5 GWh a year across numerous sites, and systems capable of handling portfolio changes during the contract. It would also need strong wholesale-market and pricing capability, including arrangements for fixed pricing and periodic price fixing subject to market liquidity. The evaluation placed greater emphasis on technical quality than price, so suppliers should be able to evidence reliable supply operations, account and data management, customer support, and the financial and technical capacity to serve a large water utility. Experience delivering comparable multi-site energy contracts would strengthen future competition.

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Notice Information

Notice Title

prj_7119 - Natural Gas Supply (Non-domestic)

Notice Description

Southern Water Services Limited (SWS) is seeking to award a single supplier Ofgem licenced supplier for provision of natural gas to all sites within their portfolio, in accordance with the specifications set out in the tender documentation (IITT). The portfolio currently consists of 19 supply points across South East of England (Hampshire, Isle of Wight, Sussex, Kent) with total annual consumption at approximately 2.5GWh. The composition of the portfolio may change before the contract commences; SWS also reserves the right to add/remove sites from portfolio during contract term with accordance to appropriate contractual provisions. The supply under the contract is to commence on 1st of April 2026. The initial contract period is 4 years, with the option to extend for up to a maximum duration of 5 years. SWS require a fixed price contract, with the ability to fix prices under the supply contract in 12 monthly periods (or multiply of) under any active term (subject to market liquidity). The procurement will be conducted in line with the Procurement Act 2023, ensuring a fair, transparent, and competitive process to identify the Most Advantageous Tender.

Lot Information

Lot 1

Renewal: Potential extension for period or periods of up to 5 years to be agreed by both Parties. It is assumed the extension would be subject to same Terms and Conditions of contracting (with the exclusion of some elements, e.g. pricing arrangements), however review of/amendments to Terms of Conditions of contract will be considered if required (e.g. due to industry changes). Any changes would require mutual agreement of both Parties.

Planning Information

Suppliers interested in this opportunity can engage with SWS via email provided, individual calls/teams meetings to disucss this requirement can be arranged on request.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-05024e
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/087984-2026
Current Stage
Award
All Stages
Planning, Tender, Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Open
Procurement Method Details
Competitive flexible procedure
Tender Suitability
Not specified
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

09 - Petroleum products, fuel, electricity and other sources of energy

CPV Codes

09121200 - Mains gas

09123000 - Natural gas

09300000 - Electricity, heating, solar and nuclear energy

Notice Value(s)

Tender Value
£1,836,000 £1M-£10M
Lots Value
£1,836,000 £1M-£10M
Awards Value
£3,600,000 £1M-£10M
Contracts Value
Not specified

Notice Dates

Publication Date
16 Sep 20261 months ago
Submission Deadline
10 Oct 2025Expired
Future Notice Date
Not specified
Award Date
16 Sep 20261 months ago
Contract Period
1 Oct 2026 - 31 Mar 2030 3-4 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Southern Water Services Ltd.
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
WORTHING
Postcode
BN13 3NX
Postcode Area
Brighton
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ2 Surrey, East and West Sussex
Small Region (ITL 3)
TLJ27 West Sussex (South West)
Delivery Location
TLJ22 East Sussex CC, TLJ27 West Sussex (South West), TLJ28 West Sussex (North East), TLJ3 Hampshire and Isle of Wight, TLJ4 Kent
Local Authority
Worthing
Electoral Ward
Northbrook
Westminster Constituency
Worthing West

Supplier Information

Number of Suppliers
1
Supplier Name

Brook Green Supply Limited

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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