System operational · UK tenders

Buyer profile

Department for Energy Security & Net Zero

central_govUKI32englandGB

Get alerts when Department for Energy Security & Net Zero publishes a new tender — 7-day free trial, then £4.99/month.

Total contracts

119

Known spend

£431m

113 disclosed

Average value

£4m

Per contract

Active suppliers

10

Last 5 years

Open4Awarded84Closed11

Top suppliers

Last 5 years
  1. 1

    United Kingdom National Nuclear Laboratory

    5 winslatest 01 Jul 2026CH 03857752

    £24m

  2. 2

    Aether Limited

    5 winslatest 18 Aug 2026CH 06630896

    £184,771

  3. 3

    Energy Systems Catapult Limited

    4 winslatest 04 Aug 2026CH 08705784

    £621,302

  4. 4

    Version 1 Solutions Ltd

    2 winslatest 19 Aug 2026

    £100m

  5. 5

    PricewaterhouseCoopers LLP

    2 winslatest 28 Oct 2025

    £2m

  6. 6

    RSM UK Restructuring Advisory LLP

    2 winslatest 28 Oct 2025

    £2m

  7. 7

    Teneo Financial Advisory Limited

    2 winslatest 28 Oct 2025

    £2m

  8. 8

    Deloitte LLP

    2 winslatest 28 Oct 2025

    £2m

  9. 9

    DMDL Ltd

    2 winslatest 13 Oct 2025

    £920,000

  10. 10

    YRD İstanbul Reklamcılık ve Danışmanlık Ticaret Anonim Şirketi

    2 winslatest 06 Oct 2026

    £845,026

What they buy

By CPV category
  • Business servicesCPV 79

    3 contracts · £4m

Tender activity

Notices published per month — last 24 months

18 active months
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All contracts (119)

D
ocds-h6vhtk-06c18d · award

ICIS energy data and insight subscription service; 2026/2027

Department for Energy Security & Net Zero
London

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.

£Up to £23,758
Posted · 3mo agoView details →
D
ocds-h6vhtk-069ebc · award

Nuclear innovation and research advisory board (nirab)

Department for Energy Security & Net Zero
London

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

£Up to £230,000
Posted · 3mo agoView details →
D
ocds-h6vhtk-06bcf0 · award

Electricity safety, quality and continuity regulations - suitably qualified person

Department for Energy Security & Net Zero
London

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

£Up to £30,000
Posted · 3mo agoView details →
D
ocds-h6vhtk-05185c · award

Climate services for a net zero resilient world (CSN0W2)

Department for Energy Security & Net Zero
London

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

£Up to £5,899,000
⏱ 12 Feb 2026
Posted · 3mo agoView details →
D
ocds-h6vhtk-06b97a · planning

Application development and maintenance services

Department for Energy Security & Net Zero
London

Application Development and Maintenance (full lifecycle) · Platform services (e.g. Salesforce, AWS, Azure, DMS, Workday‑adjacent needs) · Specialist digital capabilities (UCD, data

£On request
Posted · 3mo agoView details →
D
ocds-h6vhtk-06b8cb · planning

Non-carbon capture and storage (CCS) reliant greenhouse gas removals (GGR)

Department for Energy Security & Net Zero
London

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

£Up to £488,000
Posted · 3mo agoView details →
D
ocds-h6vhtk-06b32d · award

Desnz / DSIT - comms - politico renewal UK7 notice

Department for Energy Security & Net Zero
London

Daily news service- 24 months contract: £69,355.48

£Up to £69,355
Posted · 4mo agoView details →
D
ocds-h6vhtk-06acf4 · award

Analytical model training course

Department for Energy Security & Net Zero
London

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

£Up to £12,320
Posted · 4mo agoView details →
D
ocds-h6vhtk-06ab97 · award

Transport industrial and commercial refrigeration (TICR) UK5 notice

Department for Energy Security & Net Zero
London

The Transport Industrial and Commercial Refrigeration (TICR) project has successfully investigated decarbonisation pathways for 6 sectors. This project was delivered by London Sout

£Up to £20,000
Posted · 4mo agoView details →
D
ocds-h6vhtk-06735a · award

Heat zoning core digital service

Department for Energy Security & Net Zero
London

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

£Up to £2,699,429
Posted · 4mo agoView details →
D
ocds-h6vhtk-069f35 · planning

Application management services for the radiological response and emergency management system (rrems)

Department for Energy Security & Net Zero
London

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

£On request
Posted · 4mo agoView details →
D
ocds-h6vhtk-067b61 · planning

Warm homes plan - consumer protection reform

Department for Energy Security & Net Zero
London

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

£Up to £60,000,000
Posted · 4mo agoView details →
D
ocds-h6vhtk-061476 · award

Assessment of legacy data for natural hydrogen in the UK

Department for Energy Security & Net Zero
London

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

£Up to £130,000
Posted · 5mo agoView details →
D
ocds-h6vhtk-05f670 · award

UK5 notice publicly available specification (PAS)2035 & 2030 - review

Department for Energy Security & Net Zero
London

The contract is for the provision of the reviews and updates of the PAS 2030 and PAS 2035 standards.

£Up to £187,921
Posted · 5mo agoView details →
D
ocds-h6vhtk-06841e · award

NDA review

Department for Energy Security & Net Zero
London

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

£Up to £57,600
Posted · 5mo agoView details →
D
ocds-h6vhtk-068219 · award

Cornwall insights subscription 2026-2027

Department for Energy Security & Net Zero
London

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.

£Up to £88,110
Posted · 5mo agoView details →
D
ocds-h6vhtk-068214 · award

Macroeconomic model build project

Department for Energy Security & Net Zero
London

This work focuses on macroeconomic modelling and dissemination.

£Up to £18,000
Posted · 5mo agoView details →
D
ocds-h6vhtk-06817e · award

Unfccc review – in-country review of malta’s biennial transparency report 2026

Department for Energy Security & Net Zero
London

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

£Up to £25,973
Posted · 6mo agoView details →
D
ocds-h6vhtk-059c1b · award

Built environment adaptation & resilience (BEAR)

Department for Energy Security & Net Zero
London

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

£Up to £3,088,812
⏱ 16 Feb 2026
Posted · 6mo agoView details →
D
ocds-h6vhtk-067be2 · award

Ongoing analysis and news reporting on oil markets (2026-27)

Department for Energy Security & Net Zero
London

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

£Up to US$111,620
Posted · 6mo agoView details →