Top suppliers
Top suppliers to Department for Energy Security & Net Zero
Top-five suppliers hold 49% 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.
7934000071350000981100009072000079110000907100006617000079410000713100009073000072220000752100003451000073110000732100007962000079950000249500007998000072320000Recent contracts
Latest Department for Energy Security & Net Zero contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
IT Service Management and Development (SMD)
Version 1 Solutions Ltd · 2026-07-28
£50.0M
UK5 Notice - Direct Award to Energy Systems Catapult - Mission Innovation Secretariat
Energy Systems Catapult · 2026-07-23
£250K
PAS63100 - Amendment and Review
BSI Standards Ltd · 2026-07-20
£250K
Travel and Accommodation for Organisation for the Prohibition of Chemical Weapons (OPCW)
Selwyn's Travel Ltd · 2026-07-17
£200K
DESNZ - COMMS - Media Buying and Planning
Wavemaker Limited · 2026-07-10
£50.0M
Nuclear Innovation and Research Advisory Board (NIRAB)
United Kingdom National Nuclear Laboratory · 2026-07-01
£230K
ICIS Energy data and insight subscription service; 2026/2027
Lexis Nexis · 2026-07-01
£24K
UK5 Notice - Direct Award to Energy Systems Catapult - Mission Innovation Secretariat
Energy Systems Catapult · 2026-06-24
£250K
Climate Services for a Net Zero Resilient World (CSN0W2)
OVE ARUP & PARTNERS LIMITED · 2026-06-23
£5.9M
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
UNFCCC Review – In-Country Review of Malta’s Biennial Transparency Report 2026
Ricardo-AEA Limited · 2026-04-14
£26K
Cornwall Insights Subscription 2026-2027
Cornwall Insight · 2026-04-14
£88K
WANT TO WIN WORK FROM DEPARTMENT FOR ENERGY SECURITY & NET ZERO?
Get alerted when Department for Energy Security & Net Zero posts a contract you can win
ENKII watches this buyer's tenders and emails you only the ones your business qualifies for — free, no card, 3-minute setup.
Open opportunities
Open Department for Energy Security & Net Zero tenders
Tenders currently inviting bids. SMEs can respond via the official tender portal.
Homes for Net Zero Phase 3 (HfNZ P3)
Deadline: 2026-08-21
£7.7M
Heat Pump Ready (Round 2) – Acceleration Support Provider
Deadline: 2026-09-09
£1.8M
Industrial Decarbonisation Research Programme (IDRP)
Deadline: 2026-09-17
£4.7M
Warm Homes Plan - Consumer protection reform
Deadline: 2027-03-01
£60.0M
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
CSP25324 - GBE Pension Scheme
Enhancing Private Investment for Climate (EPIC)
£83.3M
Built Environment Adaptation & Resilience (BEAR)
£2.6M
Energy Technology List Pipeline Notice
£6.0M
Climate Innovation Pull Facility (CIPF) - Facility Manager - Invitation to Submit Initial Tenders
Greenhouse Gas Inventory Improvement Programme - 2
£4.3M
Greenhouse Gas Inventory Improvement Programme - 2
£4.3M
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.
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
Provision of Business Intelligence Data Subscription
Expires: 2026-12-31
£488K
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
Great British Nuclear HR System with Fully Managed Payroll
Expires: 2027-02-22
£214K
UK5 Notice - Direct Award to Energy Systems Catapult - Mission Innovation Secretariat
Expires: 2027-03-31
£250K
Nuclear Innovation and Research Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
Nuclear Industry Risk Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
Nuclear Industry Risk Advisory Board (NIRAB)
Expires: 2027-03-31
£230K
UK5 Notice - Direct Award to Energy Systems Catapult - Mission Innovation Secretariat
Expires: 2027-06-03
£250K
Market analysis
Bidding into Department for Energy Security & Net Zero — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
49%
Top-5 supplier share
80d
Avg response window
33d
Median response window
18mo
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 £394.9M between 2023-07-31 and 2026-07-31, working with 103 unique suppliers. Average contract value is £2.5M.
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, Wavemaker Limited, Nuvia Ltd. The top five suppliers together hold 49% 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 advertising and marketing services, engineering-related scientific and technical services, services furnished by business, professional and specialist organisations, 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 80 days). Standard contract duration is around 18 months.
Continue reading
Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
How UK central-government departments evaluate suppliers at the pre-qualification stage.
GUIDE
Cyber Essentials — for government contracts
Most central-government contracts handling personal data require this certification.
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 2026-07-31
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.