Top suppliers
Top suppliers to Department for Energy Security & Net Zero
Top-five suppliers hold 47% of contract value — a concentrated market.
Procurement categories
What Department for Energy Security & Net Zero buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
71350000
7135000098110000
9811000090720000
9072000079110000
7911000066170000
6617000090710000
9071000079410000
7941000071310000
7131000090730000
9073000072220000
7222000075210000
7521000034510000
3451000073110000
7311000073210000
7321000079620000
7962000079950000
7995000076520000
7652000079340000
7934000079510000
7951000024950000
24950000Recent contracts
Latest Department for Energy Security & Net Zero contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
Transport Industrial and Commercial Refrigeration (TICR) UK5 Notice
London South Bank University · 2026-06-02
£20K
Nuclear Innovation and Research Advisory Board (NIRAB)
United Kingdom National Nuclear Laboratory · 2026-06-01
£230K
Nuclear Industry Risk Advisory Board (NIRAB)
United Kingdom National Nuclear Laboratory · 2026-05-28
£230K
Heat Zoning Core Digital Service
TPX Impact Limited · 2026-05-28
£2.7M
Nuclear Industry Risk Advisory Board (NIRAB)
United Kingdom National Nuclear Laboratory · 2026-05-21
£230K
Conducting tests for HEM:FHS Model development
The University of Salford · 2026-05-12
£102K
Assessment of legacy data for natural hydrogen in the UK
Innovate UK as represented by British Geological Survey · 2026-05-05
£130K
UK5 Notice Publicly Available Specification (PAS)2035 & 2030 - review
BSI Standards Ltd · 2026-05-01
£188K
NDA Review
University of Manchester · 2026-04-16
£58K
Cornwall Insights Subscription 2026-2027
Cornwall Insight · 2026-04-14
£88K
Macroeconomic Model Build Project
University of Oxford · 2026-04-14
£18K
UNFCCC Review – In-Country Review of Malta’s Biennial Transparency Report 2026
Ricardo-AEA Limited · 2026-04-14
£26K
Climate Services for a Net Zero Resilient World 2 (CSN0W2)
Ove Arup & Partners Limited · 2026-04-09
£5.9M
Ongoing Analysis and News Reporting on Oil Markets (2026-27)
S&P Global Energy · 2026-04-02
£88K
Built Environment Adaptation & Resilience
AECOM · 2026-04-02
£3.1M
Heat Zoning Core Digital Service
TPXIMPACT LIMITED · 2026-03-24
£2.7M
UK Housing Airtightness (Air-Presure Test) DataSet
Build Test Solutions · 2026-03-23
£28K
Satellite Phone Handsets
Global Telesat Communications Limited · 2026-03-20
£92K
Sightline subscription for market intelligence on energy projects
Climate Tech Insights · 2026-03-20
£40K
Maritime PRPP Contract Details notice
United Kingdom National Nuclear Laboratory Limited (UKNNL) · 2026-03-09
£20K
BIDDING AGAINST THESE SUPPLIERS?
See your match score against Department for Energy Security & Net Zero
ENKII scores your business against live tenders and identifies the certifications you need to compete with the suppliers above.
Open opportunities
Open Department for Energy Security & Net Zero tenders
Tenders currently inviting bids. SMEs can respond via the official tender portal.
North West- Digital and Technology Skills Programme
Deadline: 2026-06-23
£1.4M
Audio Visual (AV) Event Support For International Conference
Deadline: 2026-07-01
£150K
Industrial Decarbonisation Research Programme (IDRP)
Deadline: 2026-07-24
£4.7M
Warm Homes Plan - Consumer protection reform
Deadline: 2027-03-01
£60.0M
Warm Homes Plan - Consumer Protection Reform
£60.0M
Heat Zoning Digital Services
£2.6M
Travel and Accommodation for Organisation for the Prohibition of Chemical Weapons (OPCW)
£200K
Industrial Decarbonisation Research Programme (IDRP)
£5.0M
UK1 Industrial Decarbonisation Research Programme (IDRP)
£5.0M
Climate Innovation Pull Facility (CIPF) - Facility Manager - Invitation to Submit Initial Tenders
Enhancing Private Investment for Climate (EPIC)
£83.3M
Enhancing Private Investment for Climate (EPIC)
£83.3M
HR - ICS - Pay progression digital assessment tool
£400K
HR - ICS - Pay progression digital assessment tool
£400K
Travel and Accomadation for Organisation for the Prohibition of Chemical Weapons (OPCW)
£200K
Greenhouse Gas Inventory Improvement Programme - 2
£4.3M
Energy Technology List Pipeline Notice
£6.2M
Energy Technology List Pipeline Notice
£6.2M
Built Environment Adaptation & Resilience (BEAR)
£2.6M
Enhancing Private Investment for Climate (EPIC)
£83.3M
Pipeline
Contracts expiring in the next 12 months
When these contracts end, Department for Energy Security & Net Zero typically re-tenders. SMEs preparing bids 3-6 months ahead win disproportionately often.
IDET DDaT Professional Servies
Expires: 2026-06-30
£4.3M
ZEV India - Supporting Indian States with Building Capacity to Access Finance for E-mobility Programme
Expires: 2026-07-05
£364K
ZEV India - Supporting Indian States with Building Capacity to Access Finance for E-mobility Programme
Expires: 2026-07-05
£364K
HOME OWNER ELECTRIFICATION TRACKER SURVEY
Expires: 2026-07-17
£12K
Comms - DESNZ/DSIT - Supply of Joint Financial Times Licence
Expires: 2026-07-25
£210K
Comms - DESNZ/DSIT - Supply of Joint Financial Times Licence
Expires: 2026-07-29
£210K
Assessment of legacy data for natural hydrogen in the UK
Expires: 2026-10-30
£130K
UK5 Notice Publicly Available Specification (PAS)2035 & 2030 - review
Expires: 2026-11-02
£188K
UK5 Notice Publicly Available Specification (PAS)2035 & 2030 - review
Expires: 2026-12-31
£188K
Provision of Business Intelligence Data Subscription
Expires: 2026-12-31
£488K
Transport Industrial and Commercial Refrigeration (TICR) UK5 Notice
Expires: 2026-12-31
£20K
Provision of Business Intelligence Data Subscription
Expires: 2026-12-31
£488K
Great British Nuclear HR System with Fully Managed Payroll
Expires: 2027-02-22
£214K
Nuclear Industry Risk Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
Nuclear Innovation and Research Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
Nuclear Industry Risk Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
Market analysis
Bidding into Department for Energy Security & Net Zero — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
47%
Top-5 supplier share
81d
Avg response window
33d
Median response window
17mo
Avg contract duration
Frequently asked
Common questions about selling to Department for Energy Security & Net Zero
How much does Department for Energy Security & Net Zero spend on procurement?
Department for Energy Security & Net Zero awarded 191 contracts totalling £347.5M between 2023-06-17 and 2026-06-17, working with 102 unique suppliers. Average contract value is £2.2M.
Who are Department for Energy Security & Net Zero's top suppliers?
The largest suppliers to Department for Energy Security & Net Zero by total award value are Turner and Townsend Consulting Ltd, Nuvia Ltd, Linklaters LLP. The top five suppliers together hold 47% of contract value.
What does Department for Energy Security & Net Zero buy from suppliers?
Department for Energy Security & Net Zero's procurement is concentrated in 71350000, 98110000, 90720000, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for Department for Energy Security & Net Zero contracts?
Department for Energy Security & Net Zero publishes open tenders on Find a Tender and Contracts Finder. ENKII matches your business against live tenders, identifies certifications you'll need, and surfaces frameworks worth applying to. Free Readiness Score in 3 minutes.
What's the typical response window for Department for Energy Security & Net Zero tenders?
Department for Energy Security & Net Zero typically gives suppliers a median of 33 days to respond (average 81 days). Standard contract duration is around 17 months.
Continue reading
Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
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SECTOR
UK Government IT Services
G-Cloud, DOS, Crown Commercial frameworks. Software + consultancy is Department for Energy Security & Net Zero's largest spend area.
INDEX
All UK public-sector buyers
Browse procurement profiles for every UK government department and major buyer.
Sources & methodology
How this profile is compiled
Analysed by ENKII · Updated 2026-06-17
This profile aggregates public-record procurement data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and aggregates source records; we don't edit the underlying facts.
Source portals
- · Find a Tender (find-tender.service.gov.uk)
- · Contracts Finder
- · Spend Network
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.