Procurement of the Development Agreement Related to a Low Carbon Heat Network in the Square Mile

• How the procedure runs: This Competitive Flexible Procedure will be conducted in five (5) stages. a. Stage 1: Conditions of Participation - issuing this Tender notice and a Procurement Specific Questionnaire, which includes the Conditions of Participation. b. Stage 2: Interim Tender Response Phase - suppliers who have been successfully shortlisted at Stage 1 will be invited to submit an Interim Tender Response. This will be limited to a legal response on the Contract Documents. However, technical issues can be raised to the extent that they relate to contractual risks. c. Stage 3: Dialogue Meetings - Following receipt of the Interim Tender Responses, dialogue meeting(s) will be held with each Supplier to discuss their responses in Stage 2. d. Stage 4: Invitation to Submit a Final Tender Response - Stage 4 will commence with CoLC providing any documents which have been updated following Stage 3, and inviting suppliers to respond to the Technical, Commercial and Social Value questions. e. Stage 5: Preferred Supplier Stage - CoLC will provide an assessment summary to all Suppliers that submitted Final Tender Responses. CoLC will clarify commitments with the Supplier who CoLC considers has the Most Advantageous Tender in order to finalise the Contractual Documentation. During this stage CoLC will not negotiate substantive terms post final tender evaluation and award, only using this stage to clarify and confirm commitments made in the tender negotiation. This will ensure a confirmed understanding of how the contract will operate and reducing the risk of issues arising once the contract has been entered into. The conditions of participation used in Stage 1 will include: • Economic Financial Standing • Insurance • Technical Ability (relevant experience and case study examples) • Data Protection • Health & Safety • Business Continuity • Requirement under Section 73 in the Act • Modern Slavery Act 2015 • Climate Action Strategy (not scored) • Work Related Road Risk • Living Wage • Supplier Diversity Monitoring Form (not scored) CoLC has included in section 10 of the Invitation to Tender a number of known risks, as defined in Schedule 1, paragraph 5(b) of the Procurement Act 2023. In the event any of the above-mentioned known risks materialise, CoLC reserves the right to modify the Contractual Documentation in accordance with section 74 of the Procurement Act 2023. CoLC reserves their right under section 24 of the Procurement Act 2023 to refine award criteria before the invitation of final tenders.

CPV: District-heating mains construction work · Energy and related services · Heating works · Urban development construction work

Procedure method

Competitive flexible procedure

Legal basis

UKPGA · 2023/54 Procurement Act 2023

Procurement category

Works

Notice status

Closed

Procurement threshold

Above threshold (FTS publication)

Regulatory regime

Concession

Commercial structure

Stand-alone contract (no framework)

Competition type

Competitive procedure

GPA / WTO covered

Unspecified in notice

Recurring procurement

Unspecified in notice

First published

9 Jun 2025, 13:13 BST

Last source update

16 Dec 2025, 12:53 GMT

Award evaluation window

Submission end – 5 Nov 2026

Authority reference

itt_201

FTS notice number

2025/S 000-083343

Latest notice

Tender notice (UK4)

Classification (CPV)

District-heating mains construction workEnergy and related servicesHeating worksUrban development construction work

Delivery area

London (UKI31)

Official registry OCID

ocds-h6vhtk-05453f Find a Tender

How it runs

This Competitive Flexible Procedure will be conducted in five (5) stages.

a. Stage 1: Conditions of Participation - issuing this Tender notice and a Procurement Specific Questionnaire, which includes the Conditions of Participation.

b. Stage 2: Interim Tender Response Phase - suppliers who have been successfully shortlisted at Stage 1 will be invited to submit an Interim Tender Response. This will be limited to a legal response on the Contract Documents. However, technical issues can be raised to the extent that they relate to contractual risks.

c. Stage 3: Dialogue Meetings - Following receipt of the Interim Tender Responses, dialogue meeting(s) will be held with each Supplier to discuss their responses in Stage 2.

d. Stage 4: Invitation to Submit a Final Tender Response - Stage 4 will commence with CoLC providing any documents which have been updated following Stage 3, and inviting suppliers to respond to the Technical, Commercial and Social Value questions.

e. Stage 5: Preferred Supplier Stage - CoLC will provide an assessment summary to all Suppliers that submitted Final Tender Responses. CoLC will clarify commitments with the Supplier who CoLC considers has the Most Advantageous Tender in order to finalise the Contractual Documentation. During this stage CoLC will not negotiate substantive terms post final tender evaluation and award, only using this stage to clarify and confirm commitments made in the tender negotiation. This will ensure a confirmed understanding of how the contract will operate and reducing the risk of issues arising once the contract has been entered into.

The conditions of participation used in Stage 1 will include:

• Economic Financial Standing
• Insurance
• Technical Ability (relevant experience and case study examples)
• Data Protection
• Health & Safety
• Business Continuity
• Requirement under Section 73 in the Act
• Modern Slavery Act 2015
• Climate Action Strategy (not scored)
• Work Related Road Risk
• Living Wage
• Supplier Diversity Monitoring Form (not scored)

CoLC has included in section 10 of the Invitation to Tender a number of known risks, as defined in Schedule 1, paragraph 5(b) of the Procurement Act 2023. In the event any of the above-mentioned known risks materialise, CoLC reserves the right to modify the Contractual Documentation in accordance with section 74 of the Procurement Act 2023.

CoLC reserves their right under section 24 of the Procurement Act 2023 to refine award criteria before the invitation of final tenders.

Submission deadline

26 Jan 2026, 12:00 GMT

Clarification deadline

12 Jan 2026, 12:00 GMT

Submission channel

Official e-sourcing portal

Electronic submission

Allowed

Accepted languages

en