Official UK procurement notice
Climate Services for a Net Zero Resilient World (CSN0W2)
Authority: Department for Energy Security & Net Zero (Central government)
What is being bought
Published requirement descriptionDESNZ is seeking to procure a contractor to provide climate services focusing on the integration of mitigation and adaptation to build resilience and de-risk the delivery of net zero and the Clean Power Mission. This will build on the successful CS-N0W programme, though with a new research scope.
It will include research on:
Metrics and thresholds to measure and monitor UK climate resilience .
Assessing the climate resilience of UK mitigation policies and pathways, and levers and barriers to implementing resilience measures.
Cascading hazards and system linkages (with a focus on the UK built environment) .
Modelling global mitigation and business-as-usual pathways to better understand the benefits, costs, and risks of action to reduce warming to 1.5°C or below after exceeding it as well as the impacts that are avoided and the consequences of inaction.
The programme will take a whole-system approach to climate resilience and energy security, considering cross-sectoral and cross-border climate impacts on the energy and net zero system. A knowledge integration work package will provide agile policy support.
The programme will require expertise in assessing climate risk through a mixed-method and multi-disciplinary approach, across climate science, built environment and energy adaptation, economics and social science. Methods could include evidence syntheses and literature reviews, data analysis and scenario development, knowledge integration and dissemination. DESNZ anticipates a consortium of suppliers will be needed to cover the breadth of expertise required.
Outputs are likely to include reports, on-call advice and briefings, seminars and teach-ins, workshops, and scientific support. The research will be co-designed with policy focal points to inform specific policy areas and will have built-in flexibility to respond to emerging policy needs.
CPV: Climatology services · Research services
The lotProcurement structure
single lot · value publishedLot #1AwardedPublished value£5,900,000
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).
- Understanding of the Requirement
- Methodology and Approach
- Skills, Resource and Expertise
- Project plan, management and risk
- Knowledge Transfer, Dissemination & Upskilling
- Cost Control
- Social Value
- Price
Procedure terms & legal framework
From the official record- Procedure method
- Open procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Awarded
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 20 May 2025, 11:25 BST
- Last source update
- 30 Sept 2026, 15:27 BST
- Award evaluation window
- Submission end – 13 Mar 2026
- Authority reference
prj_5034- FTS notice number
2025/S 000-084610- Latest notice
- Contract performance notice (UK9)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-05185cFind a Tender
How it was run
Official notice- Submission deadline
- 12 Feb 2026, 16:00 GMT
- Clarification deadline
- 16 Jan 2026, 17:00 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
All Responses and questions must be submitted via the Jaggaer eSourcing Portal.
How to Apply
DESNZ will be using the Jaggaer eSourcing Portal for this procurement.
To register on the Jaggaer eSourcing portal please use the link beisgroup.ukp.app.jaggaer.com ↗ and follow the instructions to register as a supplier.
If you are already registered on the Jaggaer eSourcing Portal and wish to participate in this procurement, please use the link: beisgroup.ukp.app.jaggaer.com ↗.
Once you are logged into the system you will be able to locate the Procurement you wish to leave a bid on by clicking the ITTs Open to All Suppliers and searching for the Jaggaer ITT reference number ITT_2435
Timeline
20 May 2025 → 30 Sept 2026 · 11 dates- Planning notice published20 May 2025, 11:25 BST
- Market engagement363 days ago24 Oct 2025, 23:59 BST
There will be a Supplier Engagement Call on Thursday 9th October 2025 from 10am-1pm GMT.
If you are interested in this potential opportunity, please complete the MS Form with your company details. Link for sign-up form: forms.office.com/pages/responsepage.aspx ↗
Following confirmation of company details and contact information, an ‘MS Teams’ invite will be circulated for the market engagement event on the week of the event. We would ask that you have a maximum of 2 attendees from each organisation.
Participants will need to register by 4pm GMT on Wednesday 8th October 2025.
Please send any clarification questions or queries to [email protected]
by 4pm GMT on Friday 24th October 2025.
- Next notice expected346 days ago10 Nov 2025, 23:59 GMT
- Tender notice published308 days ago18 Dec 2025, 16:43 GMT
- Clarification questions by279 days ago16 Jan 2026, 17:00 GMT
- Submission deadline252 days ago12 Feb 2026, 16:00 GMT
- Award decision expected by223 days ago13 Mar 2026, 23:59 GMT
- Contract starts205 days ago1 Apr 2026, 00:00 BST
- Assessment summaries sent197 days ago9 Apr 2026, 00:00 BST
- Standstill ends185 days ago20 Apr 2026, 23:59 BST
- Latest notice published22 days ago30 Sept 2026, 15:27 BST
Notice history
15 events · 8 releases on Find a Tender · since 20 May 2025- Pipeline notice published20 May 2025, 11:25 BSTUK1
- Preliminary market engagement notice published11 Sept 2025, 16:01 BSTUK2
- Published value updated to £6,000,00011 Sept 2025, 16:01 BSTwas £7,000,000
- Preliminary market engagement notice published30 Sept 2025, 11:37 BSTUK2
- Tender notice published18 Dec 2025, 16:43 GMTUK4
- Published value updated to £5,900,00018 Dec 2025, 16:43 GMTwas £6,000,000
- Status changed to active18 Dec 2025, 16:43 GMT
- Procurement method changed18 Dec 2025, 16:43 GMT
- Deadline published: 12 Feb 2026, 16:00 GMT18 Dec 2025, 16:43 GMT
- Tender notice published8 Jan 2026, 11:17 GMTUK4
- Contract award notice published9 Apr 2026, 11:59 BSTUK6
- Status changed to complete9 Apr 2026, 11:59 BST
- Contract signature expected27 Apr 2026, 23:59 BSTscheduled
- Contract details notice published23 Jun 2026, 16:06 BSTUK7
- Contract performance notice published30 Sept 2026, 15:27 BSTUK9
Published amendments (1)
The deadline for suppliers to submit clarification questions via the Portal has been extended to 17:00 on Friday, 16 January 2026. The deadline for the Authority’s responses to these questions has been extended to Friday, 23 January 2026. These revised dates are reflected in Version 2 of the Invitation to Tender (prj_5034‑Invitation to Tender V2.0), now available on the Portal. No other amendments…
Routine re-releases (8)
- 2026-01: 1 release · 8 Jan 2026
- 2025-12: 1 release · 18 Dec 2025
- 2025-09: 2 releases · 11 Sept 2025, 30 Sept 2025
- 2025-05: 1 release · 20 May 2025
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| OVE ARUP & PARTNERS LIMITEDClimate Services for a Net Zero Resilient World 2 (CSN0W2)27 Apr 2026 – 31 Mar 2030 | £5,899,000same award published again · counted once | 9 Apr 2026standstill to 20 Apr 2026 | Standstill |
| OVE ARUP & PARTNERS LIMITED | £5,899,000 † | — | Awarded |
Contracts
Climate Services for a Net Zero Resilient World (CSNOW2) · OVE ARUP & PARTNERS LIMITED
- Signed
- 3 Jun 2026
- Value
- £5,899,000
- Period
- 3 Jun 2026 – 31 Mar 2030
- Status
- active
3 agreed KPIs: 1) Adherence to Delivery Timetable · 2) Quality of Delivery · 3) Provision of Annual Profit Margin Report
- 1) Adherence to Delivery Timetable, All deliverables are completed on time to the required timelines. (Within the control of the supplier or unless otherwise agreed in writing by the Authority).
- 2) Quality of Delivery, All deliverables are of the required specified quality insofar as it is in the control of the Supplier. Deliverables have been delivered to the specification and format agreed with project focal points, with rapid responses to feedback, have not required multiple redrafts to implement feedback, and are generally free of spelling, formatting or grammatical errors, and are clear, accurate and appropriate. The quality of the scientific analysis underpinning deliverables is high, with no major issues identified by the Authority or independent Science Advisory Group.
- 3) Provision of Annual Profit Margin Report, Certified Annual Profit Margin Report provided on time, as agreed with the Authority.
- Good - performance is meeting or exceeding the KPI 1 – Adherence to Delivery Timetable · to 30 Sept 2026
- Good - performance is meeting or exceeding the KPI 2 – Quality of Delivery · to 30 Sept 2026
- Other - performance cannot be rated good, approaching target, requires improvement or inadequate 3 – Provision of the Annual Profit Margin Report · to 30 Sept 2026
- Good - performance is meeting or exceeding the KPI 4 – Accurate and Timely Billing of Buyer · to 30 Sept 2026
- Good - performance is meeting or exceeding the KPI 5 – Collaboration and Effective Working · to 30 Sept 2026
- Other - performance cannot be rated good, approaching target, requires improvement or inadequate 6 – Knowledge Sharing and Impact · to 30 Sept 2026
- Other - performance cannot be rated good, approaching target, requires improvement or inadequate 7 – Social Value · to 30 Sept 2026
Bid statistics published by the authority
| Bids | SME | VCSE | Valid bid range |
|---|---|---|---|
| 6final-stage tenders | 2 | 0 | — |
Who bid
- did not winDNV Services UK Limited · Greater London
- did not winHDR Consulting LtdSME · Greater London
- did not winRicardo-AEA Limited · South East England
- did not winSayers and Partners LLPSME · South East England
- did not winVaultIQ Global Solutions Ltd · Greater London
- wonOve Arup & Partners Limited · Greater London
Bidders as named on the Procurement Act 2023 award notice. “Won” means the bidder holds an award on this notice.
Contracting authority & participating public bodies
Bidders & participating suppliers
6 commercial parties on the notice · 1 awarded- DNV Services UK LimitedBidder / tenderer
- HDR Consulting LtdBidder / tenderer
- OVE ARUP & PARTNERS LIMITEDAwarded supplier
- Ricardo-AEA LimitedBidder / tenderer
- Sayers and Partners LLPBidder / tenderer
- VaultIQ Global Solutions LtdBidder / tenderer
Official documents & specifications (8)
Official links; attachments are not copiedNotices published for this procedure
- Contract performance notice Contract performance notice on Find a Tender
- Contract details notice Contract details notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Tender notice Tender notice on Find a Tender
- Tender notice Tender notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender
- Pipeline notice Pipeline notice on Find a Tender