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PROCUREMENT OPPORTUNITY

Software for Cable Thermal Ratings, Tunnel Thermal Modelling and Specialist Calculation capabilities (RoCiT, DRY, THORIN, RAUROS)

NATIONAL GRID UK LIMITED · Preliminary market engagement notice on Find a Tender

Tender information last checkedLast checked 27 Sept 2026, 05:01.

Opportunity overview

The purpose of this Request for Information (RFI) is to obtain structured input from the market regarding the functional, technical, commercial, and non-functional capabilities required to support a future cable thermal rating and specialist calculation platform for National Grid Electricity Transmission (NGET). NGET is seeking to understand the availability, maturity, and suitability of solutions that can support the replacement, enhancement, or evolution of existing in-house engineering capabilities, including: • RoCiT - tunnel cable thermal modelling • DRY - direct burial dry-out and effective backfill diameter calculation • THORIN - effective backfill modelling for solid-filled troughs and non-standard geometries • RAUROS - thermal modelling of water-cooled cable systems In addition, NGET is interested in understanding broader rating enhancement capabilities and specialist calculation tools that improve modelling accuracy in complex installation environments. Through this RFI, NGET aims to gather insight into: • Supplier capability, domain expertise, and relevant experience in cable thermal modelling • Product maturity, technical readiness, and proven use in comparable utility environments • Commercial models, including licensing approaches, modular pricing (including specialist calculators), total cost of ownership, and flexibility to scale • Architectural approaches, integration patterns, and deployment models appropriate for a Critical National Infrastructure (CNI) environment • Security, scalability, and compliance considerations • Implementation methodologies, delivery approaches, and associated risks • Availability of integrated or modular solutions, including core rating engines and supporting calculators This RFI will inform NGET's future sourcing strategy and solution design, including the potential adoption of product- based, configurable, bespoke, or hybrid approaches, as well as appropriate commercial and contracting structures. The objective is to identify solutions that can deliver engineering-grade, transparent, auditable, and reproducible calculations, while supporting long-term maintainability, extensibility, and alignment with evolving operational, regulatory, and commercial requirements.

Classification

  • CPV48000000 — Software package and information systems

Lots

  • Lot 1Value not stated

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
ocds-h6vhtk-06c684
Main Procurement Category
goods
Above Threshold
Yes
Status
planning

Legal basis

Id
2023/54
Scheme
UKPGA

Special regime

utilities

Communication

Future Notice Date
3 Sept 2026, 23:59

Lots and requirements

Entry 1
Id
1
Has Renewal
Yes
Status
planning

Contract period

Starts
15 Jan 2027, 00:00
Ends
14 Jan 2030, 23:59
Max Extent Date
14 Jan 2032, 23:59

Items and delivery

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
48000000
Description
Software package and information systems

Delivery locations

Entry 1
Region
UK
Country
GB
Country Name
United Kingdom

Planning and budget

Milestones

Entry 1
Id
engagement
Type
engagement
Description
Contact details: box.software-procurement@nationalgrid.com if you would like to receive the RFI document. Please send in your written response by 23:00 (UK time) on 24 July 2026 to box.software-procurement@nationalgrid.com You may include diagrams and drawings along with your written content.
Due
24 Jul 2026, 23:59
Status
scheduled

Documents

Entry 1
Id
064265-2026
Document Type
marketEngagementNotice
Notice Type
UK2
Description
Preliminary market engagement notice on Find a Tender
Published
8 Jul 2026, 14:16
Format
text/html

Buyer, suppliers and contacts

Organisation 1
Name
NATIONAL GRID UK LIMITED
Id
GB-COH-04508773

Identifier

Scheme
GB-COH
Id
04508773

Additional Identifiers

Entry 1
Scheme
GB-PPON
Id
PGTR-4481-CJPQ

Address

Street Address
1-3 Strand
Locality
London
Postal Code
WC2N 5EH
Country
GB
Country Name
United Kingdom
Region
UKI32

Contact

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
privateUtility
Description
Private utility

Recorded locations

  • Buyer location · London · UKI32 · WC2N 5EH · United Kingdom
  • Delivery location · UK · United Kingdom

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. 064265-2026Preliminary market engagement notice on Find a Tender ·