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Tenfell
Utilities & transport
South East

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 Tender

    NESO 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 Tender

    NESO 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 Tender

    The 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 Tender

    The 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 Tender

    The 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 Tender

    The 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 Tender

    The 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 Tender

    The 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 Tender

    Establishment 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 Tender

    Provision of modelling software licences and compute capacity for energy market simulations

  • CRM Platform

    Location: South East

    UpcomingPublished 22 May, 2026Source Find a Tender

    Enterprise 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 Tender

    Managed 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 Tender

    Provision 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 Tender

    Subscription 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 Tender

    The 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 Tender

    The 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 Tender

    NESO 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 Tender

    The 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 Tender

    The 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 Tender

    Provision 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