NATIONAL ENERGY SYSTEM OPERATOR LIMITED
- Open tenders
- 0
- Upcoming
- 27
- Contract awards
- 23
- Expiring in 18 months
- 6
Upcoming opportunities
Contingent Labour and options for Permanent Recruitment provider
Location: South East
UpcomingPublished 15 Oct, 2026Value £60.00mSource Find a TenderNESO is seeking a Managed Service Provider (MSP) to deliver contingent labour services, with the option to provide supplementary permanent recruitment support. The MSP will be responsible for the management of contingent workforce programmes including the delivery of direct sourcing activities and the effective managem
Strategic Enterprise Modelling Capability Solution
Location: South East
UpcomingEngagement closes 25 Sept, 2026Source Find a TenderNESO is inviting suppliers to take part in pre-market engagement to help us understand market capability, appetite and enterprise solution options for Strategic Capability for end-to-end Modelling Services. As NESO continues its transformation into an independent public corporation and advances its strategic data and d
NESO Engineering Support Services
Location: South East
UpcomingPublished 26 May, 2026Source Find a TenderThe contracting authority (NESO) is considering the potential establishment of an Engineering Services framework, likely with a single supplier, to support access to specialised and scarce engineering expertise. The objective is to facilitate timely access to skills, advisory capability, and delivery support to enhance
NESO Facilities Management Services Framework
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderThe procurement relates to the establishment of a Facilities Management Services Framework across NESO estate within the UK. The framework may include the provision of hard and/ or soft facilities management services, including associated minor works, refurbishment, repair and maintenance activities. NESO retains the r
NESO Workplace Fit-Out, Refurbishment and Associated Works (East England)
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderThe procurement relates to office fit-out and refurbishment works across NESO estate locations within the UK. NESO currently intends to competitively procure the works via one of the available external framework agreements. However, the procurement route remains subject to ongoing strategy development, and may therefo
NESO Workplace Fit-Out, Refurbishment and Associated Works (North England)
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderThe procurement relates to office fit-out and refurbishment works across NESO estate locations within the UK. NESO currently intends to competitively procure the works via one of the available external framework agreements. However, the procurement route remains subject to ongoing strategy development, and may therefo
NESO Workplace Fit-Out, Refurbishment and Associated Works (Wales)
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderThe procurement relates to office fit-out and refurbishment works across NESO estate locations within the UK. NESO currently intends to competitively procure the works via one of the available external framework agreements. However, the procurement route remains subject to ongoing strategy development, and may therefo
NESO Workplace Fit-Out, Refurbishment and Associated Works (Midlands)
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderThe procurement relates to office fit-out and refurbishment works across NESO estate locations within the UK. NESO currently intends to competitively procure the works via one of the available external framework agreements. However, the procurement route remains subject to ongoing strategy development, and may therefo
DD&T Value Added Reseller (VAR)
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderEstablishment of a VAR to support procurement of low-complexity technology goods and services
Energy Market Modelling Software and Compute Services
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderProvision of modelling software licences and compute capacity for energy market simulations
CRM Platform
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderEnterprise CRM platform licensing and associated services for customer relationship management
Cyber Security Operations Centre (SOC) and SIEM Services
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderManaged SOC and SIEM services for continuous monitoring, threat detection, and response
Pan-European Energy Market Modelling and Advisory Services
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderProvision of market modelling software and advisory services supporting European energy market analysis
Electricity Network Management System (IEMS) Software Subscription
Location: South East
UpcomingPublished 22 May, 2026Source Find a TenderSubscription for Integrated Electricity Management System software supporting network operations and optimisation
Occupational Health & Employee Assistance Programme Services
Location: South East
UpcomingEngagement closes 13 Feb, 2026Value £1.10mSource Find a TenderThe National Energy System Operator (NESO) is an independent, public corporation at the centre of the energy system with a view to create access to reliable, clean and affordable energy in the UK. Following its transition into public ownership, NESO is seeking to appoint a supplier for the People function that will pro
Flexible Benefits Platform (including Brokering Service) and Employee Reward & Recognition Platform
Location: South East
UpcomingEngagement closes 23 Jan, 2026Value £13.18mSource Find a TenderThe National Energy System Operator (NESO) is an independent, public corporation at the centre of the energy system with a view to create access to reliable, clean and affordable energy in the UK. Following its transition into public ownership, NESO is seeking to appoint a provider(s) to provide for the People function
Travel Management Services
Location: South East
UpcomingEngagement closes 14 Jan, 2026Source Find a TenderNESO requires a direct contractual relationship with any economic operator for a complete end-to-end integrated solution for Travel Management Services (TMS) to NESO. NESO is transitioning to a fully independent public corporation and seeks to appoint a Travel Management Company (TMC) to manage business travel for app
Technical Consultancy Services
Location: South East
UpcomingEngagement closes 8 Jan, 2026Value £31.50mSource Find a TenderThe National Energy System Operator, NESO, is an independent, public corporation at the centre of the energy system taking a whole system view to create a world where everyone has access to reliable, clean and affordable energy. NESO is conducting preliminary market engagement to help shape our upcoming procurement of
Coach Services for the National Energy System Operator
Location: South East
UpcomingEngagement closes 8 Dec, 2025Value £1.80mSource Find a TenderThe National Energy System Operator, NESO, is an independent, public corporation at the centre of the energy system taking a whole system view to create a world where everyone has access to reliable, clean and affordable energy NESO is now looking to set up coach services (incl. electrical buses, drivers, maintenance,
Management Consultancy Services
Location: South East
UpcomingPublished 24 Sept, 2025Value £131.54mSource Find a TenderProvision of management consultancy services including Business/Admin, Project Management, Financial Services, HR Consultancy, IT Consultancy, Procurement Consultancy, etc.
Top suppliers
| PALANTIR TECHNOLOGIES UK LTD | £16.80m |
| Softcat plc | £14.00m |
| Insight Direct UK Ltd | £11.84m |
| Efficio Limited | £7.70m |
| SALESFORCE UK LIMITED | £4.01m |
| proAV Limited | £2.54m |
| Jones Lang LaSalle Ltd | £2.50m |
| TLT LLP | £2.20m |
What they buy
- Business services: law, marketing, consulting, recruitment, printing and security22 notices in the last 3 years
- IT services: consulting, software development, Internet and support18 notices in the last 3 years
- Software package and information systems9 notices in the last 3 years
- Construction work6 notices in the last 3 years
- Security, fire-fighting, police and defence equipment6 notices in the last 3 years
- Architectural, construction, engineering and inspection services5 notices in the last 3 years
- Transport services (excl. Waste transport)3 notices in the last 3 years
- Supporting and auxiliary transport services; travel agencies services2 notices in the last 3 years