Buyer profile
Department for Energy Security & Net Zero
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Total contracts
119
Known spend
£431m
113 disclosed
Average value
£4m
Per contract
Active suppliers
10
Last 5 years
Top suppliers
Last 5 years- 1
United Kingdom National Nuclear Laboratory
£24m
- 2
Aether Limited
£184,771
- 3
Energy Systems Catapult Limited
£621,302
- 4
Version 1 Solutions Ltd
2 winslatest 19 Aug 2026£100m
- 5
PricewaterhouseCoopers LLP
2 winslatest 28 Oct 2025£2m
- 6
RSM UK Restructuring Advisory LLP
2 winslatest 28 Oct 2025£2m
- 7
Teneo Financial Advisory Limited
2 winslatest 28 Oct 2025£2m
- 8
Deloitte LLP
2 winslatest 28 Oct 2025£2m
- 9
DMDL Ltd
2 winslatest 13 Oct 2025£920,000
- 10
YRD İstanbul Reklamcılık ve Danışmanlık Ticaret Anonim Şirketi
2 winslatest 06 Oct 2026£845,026
What they buy
By CPV categoryBusiness servicesCPV 79
3 contracts · £4m
Tender activity
Notices published per month — last 24 months
All contracts (119)
IT service management and development (SMD)
The Industrial Decarbonisation and Emissions Trading team, in collaboration with Integrated Corporate Services (ICS) Digital, are awarding a contract for the provision of IT Servic
Con_10007 desnz - comms - media strategy, planning and buying
Media Buying and Planning contract for DESNZ. RM6364 Media and Creative Services, lot 1.
Biomass research programme
DESNZ is seeking to procure a contractor to provide research services for a four-year Biomass Research Programme. The programme will advance scientific understanding of the role an
Academic training: national security for energy security professionals
This service is regarding the delivery of formal academic training in national security for DESNZ energy security professionals.
Unfccc reviews - in-country BTR of algeria, germany, cyprus, zambia
Biennial Transparency Reports (BTRs) are required to be submitted by Parties to the United Nations Framework Convention on Climate Change (UNFCCC), which includes the UK. These inv
Provision of a fuel finder service
The Department for Energy Security and Net Zero (DESNZ), in collaboration with Integrated Corporate Services (ICS) Digital, are planning to procure a contract for the provision of
Conducting tests for hem:fhs model development
To validate the performance of the home energy model future homes standard wrapper (HEM:FHS); by comparing the model predictions against actual results from tests run in controlled
Continuous improvement action tracker software
Continuous Improvement Action Tracker software to support the effective management, monitoring and reporting of Continuous Improvement Activities (CIAs) across ICS Commercial. The
Mission innovation secretariat
The UK has hosted the Mission Innovation (MI) Secretariat since 2017. Energy Systems Catapult (ESC) support was brought in from 2022 to address specialist skill and capacity gaps.
Greenhouse gas inventory improvement programme - 2 energy, waste, and industrial processes and product use
DESNZ is seeking to procure a supplier(s) to deliver and lead the second UK Greenhouse Gas (GHG) Inventory Improvement Programme of research (IIP-2). The research programme will in
Greenhouse gas inventory improvement programme - 2 energy, waste, and industrial processes and product use
DESNZ is seeking to procure a supplier(s) to deliver and lead the second UK Greenhouse Gas (GHG) Inventory Improvement Programme of research (IIP-2). The research programme will in
DDAT26425 - zone shape management tool (zssmt)
Through this notice we are looking for engagement with the market and feedback and what is available in general along with any elements of innovation that may need to be considered
RAF 006/2627: plug-in solar PV fire study
A targeted fire study of plug-in solar PV modules including laboratory fire testing, engineering analysis, and policy-relevant recommendations.
Industrial decarbonisation research programme (IDRP)
Please note that the launch date is anticipated to be within the window of anticipated to be within the window of 3rd of June to 5th of June. DESNZ is seeking to procure a consorti
Public available specification (PAS) 63100 amendment and review
Provision of the amendment and Review of the PAS 63100 for the installation of domestic battery energy storage systems (home batteries). The amendment and review will be completed
Heat pump ready (round 2) – acceleration support provider
The Department for Energy Security and Net Zero (DESNZ) intends to procure an external provider to deliver Acceleration Support services alongside the Heat Pump Ready (HPR) – Round
Travel and accommodation for organisation for the prohibition of chemical weapons (OPCW)
The Department for Energy Security and Net Zero are looking for a suplier to provide Transportation and Accommodation Services. The requirement is to provide coach and driver servi
Provision of software value added reseller services
The Buyer would like to obtain feedback from the market on the proposed procurement for software value added reseller (S-VAR) Services. A 45 minute briefing session will be held at
Homes for net zero phase 3 (hfnz P3)
DESNZ is seeking to procure a contractor/s to deliver Phase 3 of the Homes for Net Zero research programme (HfNZ P3). This is a continuation of our multiyear, largescale research a
UK1 industrial decarbonisation research programme (IDRP)
DESNZ is seeking to procure a consortium to deliver a research programme to build the policy-relevant evidence base for decarbonisation of the industrial sector and carbon manageme