--- title: "Supply of Substation Compound Equipment" ocid: "ocds-h6vhtk-06f972" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06f972" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06f972.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06f972.json" source: "Find A Tender Service" current_stage: "Planning" buyer: "NATIONAL GRID ELECTRICITY DISTRIBUTION PLC" published: "2026-09-14" --- # Supply of Substation Compound Equipment Buyer: NATIONAL GRID ELECTRICITY DISTRIBUTION PLC Current stage: Planning OCID: ocds-h6vhtk-06f972 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06f972) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06f972.json) ## Summary National Grid Electricity Distribution plc plans to buy substation compound equipment for sites across the Midlands, South West and South Wales. This is a goods procurement covering six areas: arc suppression coils; neutral earthing resistors; neutral earthing reactors; cable boxes and mono blocs; substation earthing materials; and bund water control equipment. The earthing materials may include deep earthing systems, exothermic jointing equipment, earthing tape and fittings, and earth rods. The equipment supports electricity distribution substations and associated control, protection, earthing and water-management functions. The buyer is a private electricity utility, and the procurement is being run under the utilities regime. Suppliers may be able to participate in one or more equipment areas, according to the eventual tender arrangements. This procurement is at the planning stage: National Grid has announced its intention to procure, but has not yet issued an invitation to tender. It expects to use a selective competitive flexible procedure, with a framework agreement. The buyer expects the next notice to be published by 23 November 2026 and has set 30 November 2026 as the expected date for expressions of interest. The award decision is expected by 21 June 2027. Each of the six planned lots has the same proposed contract period, from 1 July 2027 to 30 June 2030. The procurement is above the applicable threshold. Tender documents and detailed engineering requirements are expected to be provided at tender stage, with electronic submission allowed in English. The work will suit manufacturers, specialist equipment suppliers and distributors serving electricity networks, substations and electrical infrastructure. Relevant capability includes producing or supplying arc suppression coils, neutral earthing resistors or reactors, cable boxes and mono blocs, substation earthing systems and materials, or bund water control equipment. Suppliers should be prepared to demonstrate that their products can meet National Grid Electricity Distribution engineering specifications: EE56 for arc suppression coils, EE123 for neutral earthing resistors, EE9 for neutral earthing reactors, EE132 for substation earthing materials, and EE100 for bund water control equipment. Businesses with reliable production, quality assurance, technical compliance and capacity to supply sites across the Midlands, South West and South Wales should monitor the procurement and prepare for the later tender process. ## Notice National Grid Electricity Distribution is running a tender for the supply of various lots of Substation Compound equipment. The products are to be supplied across various NGED sites in the Midlands, South West and South Wales. There will be six lots which are detailed below: Lot 1 Supply of Arc Suppression Coils Lot 2 Supply of Neutral Earthing Resistors Lot 3 Supply of Neutral Earthing Reactors Lot 4 Supply of Cable Boxes and Mono Blocs Lot 5 Supply of Substation Earthing Lot 6 Supply of Bund Water Control Equipment ### Lot Information Supply of Arc Suppression Coils Lot 1 This lot is for the Supply of Arc Suppression Coils, this shall be produced in accordance to NGED Engineering Specification EE56 which will be shared at tender stage. Supply of Neutral Earthing Resistors Lot 2 This lot is for the Supply of Neutral Earthing Resistors, this shall be produced in accordance to NGED Engineering Specification EE123 which will be shared at tender stage. Supply of Neutral Earthing Reactors Lot 3 This lot is for the Supply of Neutral Earthing Reactors, this shall be produced in accordance to NGED Engineering Specification EE9 which will be shared at tender stage. Supply of Cable Boxes and Mono Blocs Lot 4 This lot is for the Supply of Cable Boxes and Mono Blocs, this shall be produced in accordance to NGED Engineering Specification requirements which will be shared at tender stage. Supply of Substation Earthing Materials Lot 5 This lot is for the Supply of Substation Earthing Materials, this shall be produced in accordance to NGED Engineering Specification EE132 which will be shared at tender stage. The items required may include but not limited to Deep Earthing Systems, Exothermic Jointing Equipment, Earthing Tape and Fittings and Earth Rods. Supply of Bund Water Control Equipment Lot 6 Supply of Bund Water Control Equipment This lot is for the Supply of Bund Water Control Equipment, this shall be produced in accordance to NGED Engineering Specification EE100 which will be shared at tender stage. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/087005-2026 | | Notice type | UK3 - Planned Procurement Notice | | Procurement type | Framework | | Procurement category | Goods | | Procurement method | Selective | | Procurement method details | Competitive flexible procedure | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 14 Sep 2026 | | Submission deadline | Not specified | | Future notice date | 23 Nov 2026 | | Award date | Not specified | | Contract period | 1 Jul 2027 - 1 Jul 2030 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | Not specified | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Planned | | Lots status | Planned | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | NATIONAL GRID ELECTRICITY DISTRIBUTION PLC | | Locality | BRISTOL | | Postcode area | Bristol | | Postcode | BS2 0TB | | Country | England | | ITL 1 | TLK South West (England) | | ITL 2 | TLK5 West of England | | ITL 3 | TLK51 Bristol, City of | | Local authority | Bristol, City of | | Electoral ward | Lawrence Hill | | Westminster constituency | Bristol East | | Delivery location | Not specified | ## CPV Codes ### Divisions - 31 - Electrical machinery, apparatus, equipment and consumables; lighting - 38 - Laboratory, optical and precision equipments (excl. glasses) - 42 - Industrial machinery - 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus) ### Codes - 31157000 - Inductors - 31200000 - Electricity distribution and control apparatus - 31682100 - Electricity boxes - 31682540 - Substation equipment - 31700000 - Electronic, electromechanical and electrotechnical supplies - 38424000 - Measuring and control equipment - 42130000 - Taps, cocks, valves and similar appliances - 44320000 - Cable and related products ## Release History - 14 Sep 2026 at 15:54 - Planning - UK3 - Planned Procurement Notice - https://www.find-tender.service.gov.uk/Notice/087005-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/087005-2026 14th September 2026 - Planned procurement notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/Attachment/A-22392 ## Notice URLs - https://ariba.com - https://www.legislation.gov.uk/ukpga/2023/54/contents - https://www.nationalgrid.com/ ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06f972. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06f972.json.