Planning

TfL Renewable Corporate Power Purchase Agreement ('PPA Nimbus')

TRANSPORT FOR LONDON

This public procurement record has 3 releases in its history.

Planning

18 Mar 2026 at 17:09

UK2 - Preliminary Market Engagement Notice
PlanningUpdate

23 Feb 2026 at 12:40

UK1 - Pipeline Notice
Planning

21 May 2025 at 16:19

UK1 - Pipeline Notice
Summary of the contracting process

Transport for London (TfL) is initiating a procurement process for the Renewable Corporate Power Purchase Agreement ('PPA Nimbus'), aimed at purchasing renewable energy through Virtual PPAs. Currently in the planning stage, this procurement will supply up to 500 GWh per annum from renewable sources such as solar and wind facilities, and is expected to run from October 2028 to December 2032. As a central government public authority based in London, TfL is seeking interested parties to respond to its Market Sounding Questionnaire by 6th April 2026 to potentially inform its strategy regarding the procurement approach. The procurement method involved requires registration on TfL's SAP Ariba portal.

This tender offers significant business growth potential for renewable energy generators, engineering service providers, and construction companies specialising in building or repowering solar or wind energy assets. Entities in the petroleum, electricity, and installation services sectors across the United Kingdom are well-positioned to compete for this opportunity due to the anticipated volume range of 40-250 GWh per project and the long-term fixed-price structure linked to CPI. With the buyer being TfL, a key public transport operator, the opportunity could drive substantial exposure and long-term contracts for successful bidders, promoting a commitment to sustainable energy solutions in the public utilities domain.

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Notice Information

Notice Title

TfL Renewable Corporate Power Purchase Agreement ('PPA Nimbus')

Notice Description

Transport for London (TfL) is exploring entering into multiple Virtual PPAs (VPPAs) with renewable generator(s)/counterparties, up to a maximum volume window of 500GWh per annum (30% of TfL's total volume). The procurement will concern generation from specific renewables facilities for the supply period, and will require additionality. The expected contract structure is a pay-as-produced VPPA, for solar or wind (onshore and offshore), new-build or repowered assets. The individual PPA/project volume range is expected to be 40-250GWh, with a delivery window of October 2028 to December 2032 and a fixed pricing structure with CPI-linkage. More information on the proposed requirement is available in the MSQ. Details on how to access this document are given below.

Planning Information

TfL are looking for parties that may be interested in this opportunity to respond to the Market Sounding Questionnaire (MSQ) which can be accessed via TfL's e-tendering portal, SAP Ariba. To do so, organisations will need to register on SAP Ariba via the following link: https://service.ariba.com/Supplier.aw . Please find more detailed steps on registering below. This exercise does not form part of any procurement process. All responses will be carefully considered but will not bind TfL to any particular approach, nor will responses be treated as conveying any promise or commitment on the part of the respondent. Any feedback received will be reviewed and may be considered in determining TfL's future approach to the procurement of PPAs. Responses will be treated in confidence by TfL and shared only with organisations supporting on our strategy (where these organisations are under contract and therefore subject to maintaining confidentiality). For your feedback to be considered, your completed MSQ must be received by 12:00pm (midday) on 6th April 2026. Following submission of MSQ responses, TfL may conduct 121 conversations with a number of responding organisations with a view to further informing the strategy going forward. The following instructions explain TfL's e-tendering portal and provide guidance on how interested parties will be able to communicate with TfL in relation to this exercise. (1) To register or to check if you are already registered to SAP Ariba, log on to: https://service.ariba.com/Supplier.aw Interested parties must read the instructions carefully before proceeding with registration. For help on using the SAP Ariba system, please refer to: https://support.ariba.com/Adapt/Ariba_Network_Supplier_Training (2) Once you have registered on SAP Ariba (or are already registered), you must also register on TfL's SAP Ariba system through the following link: https://s1-eu.ariba.com/Sourcing/Main/ad/selfRegistration?realm=TfL Guidance on registering is available through the following link: https://content.tfl.gov.uk/supplier-registration.pdf (3) Upon completion of steps 1 and/or 2, interested parties must inform Molly Beaumont via email (MollyBeaumont@tfl.gov.uk) with the following details: - your organisation name as registered in SAP Ariba; - your applicable supplier ID associated with TfL in SAP Ariba, in the form of SM Vendor ID, ERP ID, AN ID or ACM ID; - your single point of contact registered on SAP Ariba; first name and surname; - your email address registered with SAP Ariba; and - your role in the organisation as registered with SAP Ariba. Completion of these steps will enable TfL to invite interested parties to the event in SAP Ariba to gain access to the MSQ, allowing interested suppliers to submit their response. Please contact Ariba_Supplier_Enablement@tfl.gov.uk in the first instance should you experience any problems with the portal for issues related to items 1 and 2 above. Please contact MollyBeaumont@tfl.gov.uk or JasmineMoss@tfl.gov.uk should you experience any other problems with the portal following completion of all three steps above.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-051c13
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/024848-2026
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK2 - Preliminary Market Engagement Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

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

31 - Electrical machinery, apparatus, equipment and consumables; lighting

45 - Construction work

51 - Installation services (except software)

71 - Architectural, construction, engineering and inspection services

CPV Codes

09000000 - Petroleum products, fuel, electricity and other sources of energy

31121340 - Wind farm

31682000 - Electricity supplies

45000000 - Construction work

51000000 - Installation services (except software)

71300000 - Engineering services

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
18 Mar 20261 months ago
Submission Deadline
Not specified
Future Notice Date
1 Jun 20262 months to go
Award Date
Not specified
Contract Period
1 Jan 2028 - 1 Jan 2045 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Planned
Lots Status
Planned
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
TRANSPORT FOR LONDON
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
E20 1JN
Post Town
East London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI4 Inner London - East
Small Region (ITL 3)
TLI41 Hackney and Newham
Delivery Location
TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England), TLL Wales, TLM Scotland
Local Authority
Newham
Electoral Ward
Stratford Olympic Park
Westminster Constituency
Stratford and Bow

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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