ProcuraAxisBeta
Sign inCreate Free Account
Home / Opportunities / Opportunity
PROCUREMENT OPPORTUNITY

Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System Contract Modification

Department for Energy Security and Net Zero · compiled

Tender information last checkedLast checked 29 Sept 2026, 18:47.

Opportunity overview

DESNZ are procuring services to substantially upgrade & improve the software system used to generate annual estimates of Greenhouse Gas & pollutant emissions across the UK. Currently a set of XLS files, Access databases & SQL, with other software linking these, are used to store, process & report data. Outputs from this system are used by UK Gov to report against our emissions targets (inc. Carbon Budgets, Paris Agreement). Based on a requirement that will be provided you will develop a new software approach which streamlines the system, using standard architecture across all inventory sectors to store, analyze, and report emissions.

Awarded to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

Aether Limited

Matched by exact name
Shared contract value
£4m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
012879-2025-con_5141-1
Status
active
Location
Oxford, UK, OX1 4EH, United Kingdom

KPMG LLP

Matched by exact name
Shared contract value
£4m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
012879-2025-con_5141-1
Status
active
Location
London, UK, E14 5GL, United Kingdom

Mott Macdonald

Matched by normalised name
Shared contract value
£4m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
012879-2025-con_5141-1
Status
active
Location
London, UK, EC4M 7RB, United Kingdom

Aether Limited

Matched by exact name
Shared contract value
£3m
Awarded
Not supplied
Contract signed
29 Sept 2023
Suppliers
One of 3 awarded suppliers
Award ID
025349-2024-1-1
Status
active
Location
Oxford, UK, United Kingdom

KPMG LLP

Matched by exact name
Shared contract value
£3m
Awarded
Not supplied
Contract signed
29 Sept 2023
Suppliers
One of 3 awarded suppliers
Award ID
025349-2024-1-1
Status
active
Location
London, UK, E14 5GL, United Kingdom

Mott Macdonald

Matched by normalised name
Shared contract value
£3m
Awarded
Not supplied
Contract signed
29 Sept 2023
Suppliers
One of 3 awarded suppliers
Award ID
025349-2024-1-1
Status
active
Location
Croydon, UK, United Kingdom

Aether Limited

Matched by exact name
Shared contract value
£2.9m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
031318-2023-1
Status
active
Location
Oxford, UK, OX1 1BY, United Kingdom

KPMG LLP

Matched by exact name
Shared contract value
£2.9m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
031318-2023-1
Status
active
Location
London, UK, E14 5GL, United Kingdom

Mott Macdonald

Matched by normalised name
Shared contract value
£2.9m
Awarded
Not supplied
Contract signed
22 Oct 2023
Suppliers
One of 3 awarded suppliers
Award ID
031318-2023-1
Status
active
Location
Croydon, UK, United Kingdom

Classification

  • CPV72222300 — Information technology services
  • CPV48461000 — Analytical or scientific software package
  • CPV48610000 — Database systems
  • CPV72212990 — Spreadsheets and enhancement software development services
  • CPV72224200 — System quality assurance planning services

Lots

  • Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System£4m

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
ocds-h6vhtk-03992c
Status
complete
Has Recurrence
No
Procurement Method
open
Main Procurement Category
services
Procurement Method Details
Open procedure

Covered By

GPA

Bid Opening

Date
5 Sept 2023, 12:00

Legal basis

Id
32014L0024
Scheme
CELEX

Expected award period

Starts
5 Sept 2023, 12:00

Tender Period

Ends
5 Sept 2023, 12:00

Communication

Future Notice Date
1 Jun 2023, 00:00

Classification

Id
72222300
Scheme
CPV
Description
Information technology services

Submission terms

Languages

en

Submission Method

electronicSubmission
written

Other Requirements

Requires Staff Names And Qualifications
Yes

Lots and requirements

Entry 1
Id
1
Title
Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System
Status
cancelled
Has Options
No
Has Renewal
No
Description
The National Atmospheric Emissions Inventory (NAEI) quantifies national emissions of a range of greenhouse gases (GHGs) and air pollutants to the atmosphere from a variety of sources. The NAEI, which includes over forty different pollutants, is updated and published annually, and charts the history of the UK’s atmospheric emissions since 1970. The current digital architecture of the NAEI system has evolved across the last 20+ years in a stepwise manner according to the growth of the system and the increasing scientific and technical complexity of the emissions calculations. The system is made up of a mix of technologies (covering Excel, Access, MySQL, R and Python scripts) and is now in need of a wholesale rebuild to make the system more robust, consistent and up to date. This contract delivers the following: • Simplify the technology suite used in current system • Build the new system in a modular way • Ensure the end-to-end process for calculation of emissions is transparent and traceable

Value

Amount
4,000,000
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
price

Contract period

Ends
30 Sept 2026, 23:59
Starts
23 Oct 2023, 00:00

Submission terms

Variant Policy
notAllowed

Items and delivery

Item 1
Id
1
Related Lot
1

Delivery locations

Entry 1
Region
UK
Entry 2
Region
UK
Entry 3
Region
UK
Entry 4
Region
UK
Entry 5
Region
UK

Additional Classifications

Entry 1
Id
48461000
Scheme
CPV
Description
Analytical or scientific software package
Entry 2
Id
48610000
Scheme
CPV
Description
Database systems
Entry 3
Id
72212990
Scheme
CPV
Description
Spreadsheets and enhancement software development services
Entry 4
Id
72224200
Scheme
CPV
Description
System quality assurance planning services

Published documents

Entry 1
Id
economic
Document Type
economicSelectionCriteria
Entry 2
Id
technical
Document Type
technicalSelectionCriteria

Buyer, suppliers and contacts

Organisation 1
Id
GB-FTS-28343
Name
Department for Business, Energy & Industrial Strategy

Roles

buyer
centralPurchasingBody

Address

Region
UK
Locality
London
Postal Code
SW1H 0ET
Country Name
United Kingdom
Street Address
1 Victoria Street

Details

Classifications

Entry 1
Id
MINISTRY
Scheme
TED_CA_TYPE
Description
Ministry or any other national or federal authority, including their regional or local subdivisions
Entry 2
Id
01
Scheme
COFOG
Description
General public services

Identifier

Legal Name
Department for Business, Energy & Industrial Strategy

Contact

Organisation 2
Id
GB-FTS-84165
Name
Department for Energy Security and Net Zero

Roles

buyer
reviewBody

Address

Region
UK
Locality
London
Postal Code
SW1H0ET
Country Name
United Kingdom
Street Address
1 Victoria Street

Details

Classifications

Entry 1
Id
MINISTRY
Scheme
TED_CA_TYPE
Description
Ministry or any other national or federal authority, including their regional or local subdivisions
Entry 2
Id
01
Scheme
COFOG
Description
General public services

Identifier

Legal Name
Department for Energy Security and Net Zero

Contact

Organisation 3
Id
GB-FTS-93635
Name
Department for Energy Security and Net Zero

Roles

buyer

Address

Region
UK
Locality
London
Country Name
United Kingdom
Street Address
3-8 Whitehall Place

Details

Classifications

Entry 1
Id
MINISTRY
Scheme
TED_CA_TYPE
Description
Ministry or any other national or federal authority, including their regional or local subdivisions
Entry 2
Id
01
Scheme
COFOG
Description
General public services

Identifier

Legal Name
Department for Energy Security and Net Zero

Contact

Organisation 4
Id
GB-FTS-96068
Name
KPMG LLP

Roles

supplier

Address

Region
UK
Locality
London
Postal Code
E14 5GL
Country Name
United Kingdom

Details

Scale
large

Identifier

Legal Name
KPMG LLP
Organisation 5
Id
GB-FTS-33095
Name
Mott Macdonald

Roles

supplier

Address

Region
UK
Locality
Croydon
Country Name
United Kingdom

Details

Scale
large

Identifier

Legal Name
Mott Macdonald
Organisation 6
Id
GB-FTS-96069
Name
Aether Limited

Roles

supplier

Address

Region
UK
Locality
Oxford
Postal Code
OX1 1BY
Country Name
United Kingdom

Details

Scale
sme

Identifier

Legal Name
Aether Limited
Organisation 7
Id
GB-FTS-83248
Name
Department for Energy Security and Net Zero

Roles

reviewBody

Address

Locality
London
Country Name
United Kingdom

Identifier

Legal Name
Department for Energy Security and Net Zero
Organisation 8
Id
GB-FTS-117927
Name
Department for Energy Security and Net Zero

Roles

buyer
reviewBody

Address

Region
UK
Locality
London
Postal Code
SW1A 2EG
Country Name
United Kingdom
Street Address
3 Whitehall Place

Details

Identifier

Legal Name
Department for Energy Security and Net Zero

Contact

Organisation 9
Id
GB-FTS-121235
Name
Aether Limited

Roles

supplier

Address

Region
UK
Locality
Oxford
Country Name
United Kingdom

Details

Scale
sme

Identifier

Legal Name
Aether Limited
Organisation 10
Id
GB-FTS-12108
Name
KPMG LLP

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Legal Name
KPMG LLP
Organisation 11
Id
GB-FTS-121236
Name
Aether Ltd

Roles

supplier

Address

Region
UK
Locality
Oxford
Country Name
United Kingdom

Details

Scale
sme

Identifier

Legal Name
Aether Ltd
Organisation 12
Id
GB-FTS-94110
Name
Department for Energy Security and Net Zero

Roles

buyer
reviewBody

Address

Region
UK
Locality
London
Postal Code
SW1A 2EG
Country Name
United Kingdom
Street Address
3-8 Whitehall Place

Details

Identifier

Legal Name
Department for Energy Security and Net Zero

Contact

Organisation 13
Id
GB-FTS-50957
Name
KPMG LLP

Roles

supplier

Address

Region
UK
Locality
London
Postal Code
E14 5GL
Country Name
United Kingdom
Street Address
15 Canada Square

Details

Scale
large

Identifier

Legal Name
KPMG LLP
Organisation 14
Id
GB-FTS-142849
Name
Mott Macdonald

Roles

supplier

Address

Region
UK
Locality
London
Postal Code
EC4M 7RB
Country Name
United Kingdom
Street Address
10 Fleet Place

Details

Scale
large

Identifier

Legal Name
Mott Macdonald
Organisation 15
Id
GB-FTS-142850
Name
Aether Limited

Roles

supplier

Address

Region
UK
Locality
Oxford
Postal Code
OX1 4EH
Country Name
United Kingdom
Street Address
Blue Boar Court, 9 Alfred Street

Details

Scale
sme

Identifier

Legal Name
Aether Limited

Award information

Award 1
Id
031318-2023-1
Status
active
Has Subcontracting
Yes

Suppliers

Supplier 1
Id
GB-FTS-96068
Name
KPMG LLP
Supplier 2
Id
GB-FTS-33095
Name
Mott Macdonald
Supplier 3
Id
GB-FTS-96069
Name
Aether Limited

Related lots

1
Award 2
Id
025349-2024-1-1
Status
active

Suppliers

Supplier 1
Id
GB-FTS-96068
Name
KPMG LLP
Supplier 2
Id
GB-FTS-33095
Name
Mott Macdonald
Supplier 3
Id
GB-FTS-121235
Name
Aether Limited
Supplier 4
Id
GB-FTS-12108
Name
KPMG LLP
Supplier 5
Id
GB-FTS-121236
Name
Aether Ltd

Related lots

1
Award 3
Id
012879-2025-con_5141-1
Status
active

Suppliers

Supplier 1
Id
GB-FTS-50957
Name
KPMG LLP
Supplier 2
Id
GB-FTS-142849
Name
Mott Macdonald
Supplier 3
Id
GB-FTS-142850
Name
Aether Limited

Related lots

1

Contracts and changes

Entry 1
Id
031318-2023-1
Status
active
Award ID
031318-2023-1
Date Signed
23 Oct 2023, 00:00

Value

Amount
2,889,950
Currency
GBP
Entry 2
Id
025349-2024-1-1
Status
active
Award ID
025349-2024-1-1
Date Signed
30 Sept 2023, 00:00

Items

Item 1
Id
1
Title
Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System
Related Lot
1

Classification

Id
72222300
Scheme
CPV
Description
Information technology services

Delivery locations

Entry 1
Region
UK

Value

Amount
2,975,850
Currency
GBP

Period

Ends
30 Sept 2026, 23:59
Starts
23 Oct 2023, 00:00

Amendments

Entry 1
Id
1
Rationale
Need for additional works, services or supplies by the original contractor/concessionaire: The variation is necessary, under regulation 72 (1) (b) as it has transpired as the contract has been active, that this is essential to the success of the contract and development of an efficient digital system to include pre-processing of data in the overall scope for the digital system. The regulation will be made using reg 72 (b); given that the variation has become necessary through the contract and the same contractor must deliver the work in order to gain most value from the existing contract and subsequent outputs.
Description
This is a scope and price variation, made under regulation 72 (1) (b) to deliver high-level analysis of pre-processing files and adding pre-processing to PoC work including translation of pre-processing and validation of that translation. The variation is an additional £76,000 to the contract value through additional scope that has transpired necessary to the success of the programme.
Entry 3
Id
012879-2025-con_5141-1
Status
active
Award ID
012879-2025-con_5141-1
Date Signed
23 Oct 2023, 00:00

Items

Item 1
Id
1
Related Lot
1

Classification

Id
72222300
Scheme
CPV
Description
Information technology services

Delivery locations

Entry 1
Region
UK

Value

Amount
3,994,770
Currency
GBP

Period

Ends
30 Sept 2026, 23:59
Starts
23 Oct 2023, 00:00

Amendments

Entry 1
Id
3
Rationale
Need for modification brought about by circumstances which a diligent contracting authority/entity could not foresee: The variation was unforeseen because it is only through the delivery of the contract and a greater understanding of the intertwined and complex nature of the models being illuminated through contract delivery, that the under-estimation in cost was realised. The more precise estimate of the costs of model translation deliverables during the delivery of the contract has been informed by the contractor and two independent scrutinising functions. The initial cost of model translation was under-estimated by all estimates from market engagement, benchmarking exercises, supplier initial estimation, and a pre-requisite scoping study delivered by another supplier (procured separately). The variation is operationally critical to the functioning of the NAEI system, to ensure continuation of technology platforms upon which core business functions depend, critically including the delivery of a statutory obligation.
Description
This is a price only variation which delivers the testing, validation, assurance, and translation of models into the NAEI system (Phase 2c). Through contract delivery, this variation has become necessary to fund the translation and validation of the necessary mastersheets into the NAEI system.

Recorded locations

  • Buyer location · London · UK · SW1A 2EG · United Kingdom
  • Delivery location · UK

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. ocds-h6vhtk-03992c-2025-04-03T15:35:36+01:00compiled ·