Official UK procurement notice
PRO005070 – Supply of Battery Energy Storage Solutions (BESS)
Authority: United Utilities Water Limited (Public body)
What is being bought
Published requirement descriptionUnited Utilities Water Limited intends to establish a multi-supplier framework agreement for the provision of Battery Energy Storage Systems (BESS) to support delivery of its Power Resilience Programme across operational water and wastewater sites. The framework will enable the deployment of distributed battery storage assets across approximately 225 operational locations, supporting enhanced power resilience, operational continuity and decarbonisation objectives during the AMP8 and AMP9 regulatory periods. The scope of the framework includes the supply of containerised or modular Battery Energy Storage Systems, including battery modules, power conversion systems (PCS), energy management systems (EMS), monitoring and control systems, and associated balance-of-plant components required for integration with existing electrical infrastructure. Systems will support resilience requirements such as backup power during grid outages, peak demand management and, where appropriate, participation in grid flexibility services. Suppliers appointed to the framework will be expected to provide equipment warranties, performance guarantees and options for long-term service and maintenance to support reliable lifecycle operation. The scope may also include technical support for design integration, commissioning assistance, remote monitoring capabilities and integration with site-level control systems, including SCADA where required. The framework will appoint a limited number of experienced suppliers capable of delivering scalable and standardised BESS solutions suitable for deployment across a diverse portfolio of operational sites with varying power and capacity requirements. Call-off contracts for individual deployments may be awarded through direct award or mini-competition in accordance with the framework terms.
- How the procedure runs: United Utilities Water Limited intends to establish a multi-supplier framework agreement for the provision of Battery Energy Storage Systems (BESS) to support delivery of its Power Resilience Programme across operational water and wastewater sites. The framework will enable the deployment of distributed battery storage assets across approximately 225 operational locations, supporting enhanced power resilience, operational continuity and decarbonisation objectives during the AMP8 and AMP9 regulatory periods. The scope of the framework includes the supply of containerised or modular Battery Energy Storage Systems, including battery modules, power conversion systems (PCS), energy management systems (EMS), monitoring and control systems, and associated balance-of-plant components required for integration with existing electrical infrastructure. Systems will support resilience requirements such as backup power during grid outages, peak demand management and, where appropriate, participation in grid flexibility services. Suppliers appointed to the framework will be expected to provide equipment warranties, performance guarantees and options for long-term service and maintenance to support reliable lifecycle operation. The scope may also include technical support for design integration, commissioning assistance, remote monitoring capabilities and integration with site-level control systems, including SCADA where required. The framework will appoint a limited number of experienced suppliers capable of delivering scalable and standardised BESS solutions suitable for deployment across a diverse portfolio of operational sites with varying power and capacity requirements. Call-off contracts for individual deployments may be awarded through direct award or mini-competition in accordance with the framework terms.
CPV: Battery packs · Chargers · Electrical equipment and apparatus · Information systems
How this framework works
From the published notice- Type
- Open framework
- Call-offs
- every call-off is a further competition among the appointed suppliers
- Framework period
- 8 yrs from 13 Aug 2026
- Buyer regions
- UKD
Who may buy through it
United Utilities Water Limited
Published description of the framework
The framework agreement will establish a multi-supplier arrangement (2–3 suppliers) for the supply of Battery Energy Storage Systems (BESS), including associated equipment, warranties and long-term service agreements. The framework will operate for an initial term of 4 years, with options to extend by up to 2 + 2 years. An initial direct call-off will be awarded for priority Year 1 sites, with subsequent requirements awarded through mini-competitions between appointed suppliers. The framework is intended to support the phased deployment of BESS across multiple sites as part of a long-term resilience programme.
The lotProcurement structure
single lot · value publishedLot #1Published value£40,000,000
- Economic & financial standing
Suppliers must confirm that they have the necessary legal standing and financial capacity to perform the contract. This includes compliance with applicable laws and regulations and confirmation that they are not subject to any exclusion grounds.
- Technical & professional ability
Suppliers must demonstrate that they have the necessary technical capability and experience to deliver the contract. This includes relevant experience in the design, manufacture and/or supply of battery systems of similar scale and complexity, and the ability to meet required performance, safety, and delivery standards. Further evidence may be requested at a later stage of the procurement process.
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Published sub-criteria (2)
- Technical: 50%
- Commercial: 50%
Published award criteria (2)
- Commercial
- Technical
- Economic & financial standing
Suppliers must confirm that they have the necessary legal standing and financial capacity to perform the contract. This includes compliance with applicable laws and regulations and confirmation that they are not subject to any exclusion grounds.
- Technical & professional ability
Suppliers must demonstrate that they have the necessary technical capability and experience to deliver the contract. This includes relevant experience in the design, manufacture and/or supply of battery systems of similar scale and complexity, and the ability to meet required performance, safety, and delivery standards. Further evidence may be requested at a later stage of the procurement process.
- Price carries 50 of 100 points: a 10% discount moves about 5 points. This one is won on the number: sharpen the price before polishing the prose.
- “PRO005070 – Supply of Battery Energy Storage Solutions (BESS)” is a framework: the contest is a place on its panel, not a single contract: each call-off is a further competition, so the pricing contest starts after appointment.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Procedure terms & legal framework
From the official record- Procedure method
- Competitive flexible procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Goods
- Notice status
- Closed
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Framework agreement
- Who may use this agreement
- United Utilities Water Limited
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 19 Mar 2026, 10:00 GMT
- Last source update
- 19 Mar 2026, 10:00 GMT
- Award evaluation window
- Submission end – 13 Aug 2026
- Authority reference
PRO005070- FTS notice number
2026/S 000-024976- Latest notice
- Tender notice (UK4)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-066e73Find a Tender
- How it runs
United Utilities Water Limited intends to establish a multi-supplier framework agreement for the provision of Battery Energy Storage Systems (BESS) to support delivery of its Power Resilience Programme across operational water and wastewater sites. The framework will enable the deployment of distributed battery storage assets across approximately 225 operational locations, supporting enhanced power resilience, operational continuity and decarbonisation objectives during the AMP8 and AMP9 regulatory periods. The scope of the framework includes the supply of containerised or modular Battery Energy Storage Systems, including battery modules, power conversion systems (PCS), energy management systems (EMS), monitoring and control systems, and associated balance-of-plant components required for integration with existing electrical infrastructure. Systems will support resilience requirements such as backup power during grid outages, peak demand management and, where appropriate, participation in grid flexibility services. Suppliers appointed to the framework will be expected to provide equipment warranties, performance guarantees and options for long-term service and maintenance to support reliable lifecycle operation. The scope may also include technical support for design integration, commissioning assistance, remote monitoring capabilities and integration with site-level control systems, including SCADA where required. The framework will appoint a limited number of experienced suppliers capable of delivering scalable and standardised BESS solutions suitable for deployment across a diverse portfolio of operational sites with varying power and capacity requirements. Call-off contracts for individual deployments may be awarded through direct award or mini-competition in accordance with the framework terms.
How it was run
Official notice- Appointment period ends
- 7 May 2026, 18:00 BST
- Clarification deadline
- 1 Apr 2026, 18:00 BST
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
Timeline
19 Mar 2026 → 13 Aug 2026 · 5 dates- Tender notice published223 days ago19 Mar 2026, 10:00 GMT
- Clarification questions by210 days ago1 Apr 2026, 18:00 BST
- Admission / appointment period ends174 days ago · period end, not a bid countdown7 May 2026, 18:00 BST
- Contract starts77 days ago13 Aug 2026
- Award decision expected by76 days ago13 Aug 2026, 23:59 BST
Notice history
1 event · 1 release on Find a Tender- Tender notice published19 Mar 2026, 10:00 GMTUK4
Contracting authority & participating public bodies
Official documents & specifications (1)
Official links; attachments are not copiedNotices published for this procedure
- Tender notice Tender notice on Find a Tender