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)
ICIS energy data and insight subscription service; 2026/2027
Subscription service of ICIS energy data by the UK Government in order to keep track of market prices and developments to assist with policy and regulatory decisions.
Nuclear innovation and research advisory board (nirab)
This project supports the reconvening of the Nuclear Innovation and Research Advisory Board (NIRAB), an independent expert advisory body providing advice to DESNZ on risk based reg
Electricity safety, quality and continuity regulations - suitably qualified person
This contract is for provision of a suitably qualified person to resolve a dispute between an electricity Distribution Network Operator and two customers. The service will run for
Climate services for a net zero resilient world (CSN0W2)
DESNZ is seeking to procure a contractor to provide climate services focusing on the integration of mitigation and adaptation to build resilience and de-risk the delivery of net ze
Application development and maintenance services
Application Development and Maintenance (full lifecycle) · Platform services (e.g. Salesforce, AWS, Azure, DMS, Workday‑adjacent needs) · Specialist digital capabilities (UCD, data
Non-carbon capture and storage (CCS) reliant greenhouse gas removals (GGR)
DESNZ is seeking supplier(s) to deliver research on opportunities for effective and responsible research and/or deployment of non-CCS reliant GGRs, including biochar, enhanced weat
Desnz / DSIT - comms - politico renewal UK7 notice
Daily news service- 24 months contract: £69,355.48
Analytical model training course
CSE built an analytical model for DESNZ a number of years ago. There is a need to use this model on a daily basis by the analysts in the Central Energy and Emissions Modelling (CEE
Transport industrial and commercial refrigeration (TICR) UK5 notice
The Transport Industrial and Commercial Refrigeration (TICR) project has successfully investigated decarbonisation pathways for 6 sectors. This project was delivered by London Sout
Heat zoning core digital service
ward without Competition through CCS Framework Technology Services 4 RM6190, Lot 2 Development of a digital tool tool provide information to Local Authorities and Heat Network Deve
Application management services for the radiological response and emergency management system (rrems)
The Radiological Response and Emergency Management System (RREMS) is a system managed by the Department for Energy, Security and Net Zero (DESNZ) and used by the United Kingdom whi
Warm homes plan - consumer protection reform
Disclaimer The information set out below is indicative only. The scope, timelines, routes to market, contract values and duration are subject to change. Reform proposals are also s
Assessment of legacy data for natural hydrogen in the UK
The aim of this research is to build upon recent findings from the British Geological Survey (BGS) and is the next step in furthering our understanding of the geological prospectiv
UK5 notice publicly available specification (PAS)2035 & 2030 - review
The contract is for the provision of the reviews and updates of the PAS 2030 and PAS 2035 standards.
NDA review
The Nuclear Decommissioning Authority (NDA) is responsible for the safe and secure decommissioning and clean-up of the UK’s civil nuclear legacy. Given the significance and complex
Cornwall insights subscription 2026-2027
DESNZ are procuring a subscription service for energy market insights and industry expertise from Cornwall Insights to support the development of policy within the department.
Macroeconomic model build project
This work focuses on macroeconomic modelling and dissemination.
Unfccc review – in-country review of malta’s biennial transparency report 2026
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
Built environment adaptation & resilience (BEAR)
DESNZ is seeking to procure a supplier(s) to deliver a research programme to build the policy-relevant evidence base for adaptation action in the built environment to enable a buil
Ongoing analysis and news reporting on oil markets (2026-27)
This contract provides concise, in depth news and analysis of global oil markets, underpinned by comprehensive daily market price data that feeds daily updates, monthly oil market