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

TRANSPORT FOR LONDON

This public procurement record has 3 releases in its history.

AwardUpdate

23 Jul 2026 at 11:22

Award Notice
AwardUpdate

22 Jul 2026 at 21:53

Award Notice
Award

22 Apr 2026 at 16:03

Award Notice
Summary of the contracting process

Transport for London, contracting through London Underground Limited, procured a long-term corporate renewable electricity power purchase agreement known as PPA Comet. The arrangement covers 80 gigawatt-hours of renewable electricity each year from an additional generating asset: Longfield solar farm in Essex. The requirement is primarily for electricity supplies and renewable energy, with associated activity spanning energy generation, construction, installation and engineering services. Delivery supports Transport for London operations in London, while the generating asset is located in Essex. The selected supplier is Longfield Solar Energy Farm Limited, a subsidiary through which EDF Energy Renewables Limited provides the renewable generation. This is a goods procurement focused on securing renewable electricity from a new solar generation asset for the buyer’s energy needs.

This completed procurement used a selective, above-threshold competitive procedure with negotiation. The tender submission deadline was 18 June 2025, and the award was made to Longfield Solar Energy Farm Limited on 19 June 2025. The recorded awarded value is £0. The agreement runs from 19 June 2025 to 30 August 2045 and provides for 80 gigawatt-hours of renewable electricity per year. The tender was treated as a single requirement rather than being divided into stated lots. The published outcome identifies the supplier and an active award. The procurement was not designated as suitable for small or medium-sized enterprises or voluntary, community and social enterprises. No separate price or quality weighting is stated in the available outcome.

This outcome indicates demand from Transport for London for long-term renewable electricity backed by an additional generation asset, rather than routine electricity resale alone. A credible future competitor would need access to renewable generation capable of supplying a substantial, dependable annual volume over a long contractual term, together with the financial strength and operational capacity to support corporate power purchase arrangements. Relevant experience would include developing or operating solar generation, arranging compliant electricity supply and managing the construction, installation and engineering interfaces associated with a generating asset. The successful supplier is recorded as a large organisation, and the route was a negotiated, above-threshold competition. Businesses considering similar work for this buyer would therefore need strong renewable-generation credentials, infrastructure delivery capability and the capacity to contract at TfL scale.

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Notice Information

Notice Title

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

Notice Description

Transport for London (TfL) (contracting as its subsidiary, London Underground Limited) entered into a 15 year PPA ('PPA Comet') with a renewable generator, EDF Energy Renewables Limited (through its subsidiary Longfield Solar Energy Farm Limited), contracting for 80GWhs of renewable energy per annum from an 'additional' generator asset (Longfield solar farm, Essex).

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-28044e35-8580-4ff0-a4aa-be3e72f0b367
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/18f3d3ac-ddf3-445a-b6fc-049fc50af187
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
Award Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Selective
Procurement Method Details
Competitive procedure with negotiation (above threshold)
Tender Suitability
Not specified
Awardee Scale
Large

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
23 Jul 20261 months ago
Submission Deadline
18 Jun 2025Expired
Future Notice Date
Not specified
Award Date
19 Jun 20251 years ago
Contract Period
19 Jun 2025 - 31 Aug 2045 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Not Specified
Awards Status
Active
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
Postcode Area
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
TLI London
Local Authority
Newham
Electoral Ward
Stratford Olympic Park
Westminster Constituency
Stratford and Bow

Supplier Information

Number of Suppliers
1
Supplier Name

Longfield Solar Energy Farm Limited

Further Information

Open Contracting Data Standard (OCDS)

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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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