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Contract Notice

Procurement of a ≥300 kW Battery Energy Storage System (BESS)

  • First published: 22 September 2025
  • Last modified: 22 September 2025
  • Version: N/A
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Contents

Summary

OCID:
ocds-kuma6s-155903
Published by:
Hyppo Hydrogen Solutions
Authority ID:
AA87510
Publication date:
22 September 2025
Deadline date:
24 October 2025
Notice type:
Contract Notice
Has documents:
No
Has SPD:
No
Has Carbon Reduction Plan:
No

Abstract

Hyppo Hydrogen Solutions Ltd invites tenders from suitably qualified and experienced suppliers for the design, supply, installation, and commissioning of a ≥300 kW battery energy storage system (BESS) at Bay Studios, Fabian Way, Swansea. The project forms part of Hyppo’s wider smart local energy system development, integrating solar PV, hydrogen production, and energy management systems. The BESS must be capable of supporting grid services, load balancing, and renewable integration, while providing flexibility for future system upgrades.

Full notice text

CONTRACT NOTICE – NATIONAL

SUPPLIES

1 Authority Details

1.1

Authority Name and Address


Hyppo Hydrogen Solutions

6 Glan Yr Afon Gardens, Sketty,

Swansea

SA2 9HY

UK

Henry Apsey

+44 1792981739

henry.apsey@hyppo.co.uk

http://hyppo.co.uk
https://hyppo.co.uk/tender
https://hyppo.co.uk/tender

1.2

Address from which documentation may be obtained


Hyppo Hydrogen Solutions

6 Glan Yr Afon Gardens, Sketty,

Swansea

SA2 9HY

UK

Henry Apsey

+44 1792981739

henry.apsey@hyppo.co.uk

http://hyppo.co.uk/tender

1.3

Completed documents must be returned to:


Hyppo Hydrogen Solutions

6 Glan Yr Afon Gardens, Sketty,

Swansea

SA2 9HY

UK

Henry Apsey

+44 1792981739

henry.apsey@hyppo.co.uk

http://hyppo.co.uk/tender

2 Contract Details

2.1

Title

Procurement of a ≥300 kW Battery Energy Storage System (BESS)

2.2

Description of the goods or services required

Hyppo Hydrogen Solutions Ltd invites tenders from suitably qualified and experienced suppliers for the design, supply, installation, and commissioning of a ≥300 kW battery energy storage system (BESS) at Bay Studios, Fabian Way, Swansea.

The project forms part of Hyppo’s wider smart local energy system development, integrating solar PV, hydrogen production, and energy management systems. The BESS must be capable of supporting grid services, load balancing, and renewable integration, while providing flexibility for future system upgrades.

NOTE: To register your interest in this notice and obtain any additional information please visit the Sell2Wales Web Site at https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=155903.

The buyer has indicated that it will accept electronic responses to this notice via the Postbox facility. A user guide is available at https://www.sell2wales.gov.wales/sitehelp/help_guides.aspx.

Suppliers are advised to allow adequate time for uploading documents and to dispatch the electronic response well in advance of the closing time to avoid any last minute problems.

2.3

Notice Coding and Classification

09300000 Electricity, heating, solar and nuclear energy
31422000 Battery packs
71314000 Energy and related services
1017 Bridgend and Neath Port Talbot

2.4

Total quantity or scope of tender

The works will include but are not limited to:

• System Design & Specification

o ≥300 kW battery energy storage system (second life proposals considered) with up to 200kw of power output required.

o Lithium-ion or equivalent proven technology with robust safety and lifecycle performance.

o Modular design for future scalability.

o System efficiency >90% round-trip.

o Compliance with G99 and DNO requirements.

• Supply & Installation

o Battery modules, racks, and housing (containerised or indoor, subject to site integration).

o Inverters/PCS units compatible with both grid and on-site renewable systems.

o Control and protection systems.

o Fire suppression and ventilation systems as required.

o Balance of system (cabling, switchgear, isolators).

o Installation, commissioning, and testing.

• Integration

o Full connection to existing and planned solar PV system (256 kW) and future hydrogen electrolysis system.

o Grid connection capability with DNO approval and metering.

o Integration with smart energy management platform.

o Remote monitoring and control accessible by Hyppo Hydrogen Solutions.

• Additional Requirements

o Warranties: minimum 10-year system warranty with guaranteed performance (e.g. >70% capacity after 10 years).

o Safety compliance: IEC, UL, UK fire and electrical standards.

o Training for Hyppo staff on operation and maintenance.

o Operation & Maintenance manual.

o Ongoing maintenance and support package (optional, to be priced separately).

If your proposal does not meet all of the requirements please get in touch as we will consider all options including lease options presented.

3 Conditions for Participation

3.1

Minimum standards and qualification required

• The successful supplier will be appointed under NEC4 Engineering and Construction Short Contract (ECSC).

• All works must comply with UK regulations, manufacturer standards, and CDM Regulations 2015.

4 Administrative Information

4.1

Type of Procedure

Single stage

4.2

Reference number attributed to the notice by the contracting authority

SPHERET2

4.3

Time Limits

Time-limit for receipt of completed tenders
    24-10-2025  Time  12:00

Estimated award date
 28-11-2025

4.5

Language or languages in which tenders or requests to participate can be drawn up

EN 

4.6

Tender Submission Postbox

The buyer has indicated that it will accept electronic responses to this notice via the Postbox facility. A user guide is available at https://www.sell2wales.gov.wales/sitehelp/help_guides.aspx

5 Other Information

5.1

Additional Information

Budget and Funding

• Maximum budget: £175,000 exclusive of VAT.

Tenders exceeding the budget will be considered.

Value for money and technical capability will be key assessment criteria.

Evaluation Criteria

Tenders will be assessed on the following weighted criteria:

• Technical Capability & System Design – 25%

• Cost Effectiveness / Value for Money – 50%

• Experience & Track Record – 10%

• Delivery Timescales – 10%

• Sustainability / Added Value – 5%

Supplier Instructions

Interested suppliers must submit a tender response including:

1. Company details, relevant experience, and accreditations.

2. Proposed BESS design and system specification.

3. Detailed cost breakdown (equipment, installation, commissioning, optional O&M).

4. Delivery and installation programme.

5. Warranties, guarantees, and lifecycle performance assurances.

6. Evidence of financial standing and insurance.

7. References from similar projects.

(WA Ref:155903)

The buyer considers that this contract is suitable for consortia bidding.

5.2

Additional Documentation

5.3

Publication date of this notice

 22-09-2025

Coding

Commodity categories

ID Title Parent category
31422000 Battery packs Primary batteries
09300000 Electricity, heating, solar and nuclear energy Petroleum products, fuel, electricity and other sources of energy
71314000 Energy and related services Consultative engineering and construction services

Delivery locations

ID Description
1017 Bridgend and Neath Port Talbot

Alert region restrictions

The buyer has restricted the alert for this notice to suppliers based in the following regions.

ID Description
There are no alert restrictions for this notice.

About the buyer

Main contact:
henry.apsey@hyppo.co.uk
Admin contact:
henry.apsey@hyppo.co.uk
Technical contact:
N/a
Other contact:
henry.apsey@hyppo.co.uk

Further information

Date Details
No further information has been uploaded.

Postbox

The awarding buyer has indicated that it will accept electronic responses to this notice via the Tender Submission Postbox facility.

Submit your tender response electronically in a secure environment.

To create an electronic response please click the "Add to my interest list" button at the top of the page.

For more information on the Postbox Facility please refer to the user guide:


0800 222 9004

Lines are open 8:30am to 5pm Monday to Friday.

Rydym yn croesawu galwadau'n Gymraeg.

We welcome calls in Welsh.