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planningFind a Tender · planning

J5 Super Grid Transformer Refurbishment

Buyer: UK Atomic Energy Authority →

BuyerUK Atomic Energy Authority
Statusplanning
DeadlineNot published
Value£700,000
Published13 Aug 2026

What is being bought

J5 Super Grid Transformer Refurbishment The United Kingdom Atomic Energy Authority would like to invite suppliers who are interested in this requirement to attend a scheduled site visit, prior to a tender exercise being released for the above requirement. Values listed below are an estimate, and the UKAEA are currently undertaking cost exercises alongside this notice, in order to build upon our current estimates and scope development prior to conducting a tender exercise. Interested parties should contact us via the below link in order to arrange attendance at our site visit. Please use the attached site visit request form and return to us via the EU Supply link below. Scheduled Dates: - Wednesday 26th August, 9:00am Further dates are available on request, as well as further visits to be arranged during the tender period. Outline Scope of Requirement: This project concerns the strategic life-cycle management of Super Grid Transformers SGT1A, SGT1B, and SGT1C, located north of the J5 Substation. These critical assets are currently integrated into the 400kV National Grid network and primarily operate in a parallel configuration to ensure grid stability and redundancy. As these assets approach their fifth decade of service, this project represents a shift from reactive maintenance to a formal Asset Life Extension (ALE) Program. By addressing latent defects and obsolescence during the 2026-2027 shutdown, this scope of work aims to "reset" the aging clock of the SGTs, ensuring their continued reliability and operational integrity for a projected further 10 to 15-year life cycle.

Delivery location

UK, GB

Categories

Refurbishment work 45453100Repair and maintenance services of transformers 50532200Mechanical and electrical engineering services 71334000

Lot details

Lot LOT-0000

No lot description published.

Statusplanning
Contract periodFrom 9 Oct 2026 to 1 Jan 2027
SME suitabilitySuitable for SMEs

What is included

ItemCategoryQuantity
LOT-0000Repair and maintenance services of transformers, Refurbishment work, Mechanical and electrical engineering servicesNot published

Comparable-procurement analytics

Benchmarked against retained Find a Tender procedures with CPV division 45. The category anchor is Refurbishment work (45453100); this is a deliberately broad market comparator. The comparison is shown at several levels rather than pretending one company or region is always the best benchmark.

Comparison setProceduresReported bids per procedureNamed award suppliersPrice evidence
Market: CPV division 459,0474 median · 25.4 average (2,021 of 9,047 with a bid count)3.7 average (2,220 of 9,047 with named award suppliers)Not published
Same buyer15Not publishedNot publishedNot published
Delivery region: UK1,1786 median · 73.1 average (273 of 1,178 with a bid count)7.6 average (305 of 1,178 with named award suppliers)Not published
Similar published value (0.5×–2×)7263 median · 4.6 average (5 of 726 with a bid count)1.2 average (5 of 726 with named award suppliers)Not published

“Reported bids” is an official aggregate, sometimes reported per lot; it is the closest available competition measure. “Named award suppliers” are winners, not all applicants.

Price-outcome signal

Not enough comparable procedures currently publish both a GBP tender value and a usable lowest-valid-bid value to calculate a responsible price-reduction benchmark. Tenderline deliberately does not infer a saving from named award suppliers or from missing award values.

Procurement strategy & market signals

Framework agreementNot published
Dynamic purchasing systemNot published
Competitive procurementNot published
Recurring requirementNot published
Procurement method rationaleNot published
Rationale classificationsNot published
Special regimeNot published
Covered byNot published
Submission policyNot published
Selection criteriaNot published
Risk detailsNot published

Planning & early market engagement

BudgetValue not published
No-engagement rationaleNot published
Planning documents1
Planning milestones1
MilestoneTypeDueStatus
https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=108182&TID=100113249&B=engagement27 Aug 2026scheduled

Related procurements

No linked framework, prior procurement or reprocurement published.

Documents & submission route

Source data inventory

Diagnostic view. “Not published” means this current release does not provide a value.

OCIDocds-h6vhtk-06e3ab
Latest release ID077272-2026
Latest release timestampThu Aug 13 2026 13:01:42 GMT+0000 (Coordinated Universal Time)
Sourcefind-a-tender
Official notice URLNot published
Tender statusplanning
Procurement methodNot published
Procurement method detailsNot published
Main procurement categoryworks
Above thresholdNo
Legal basis2023/54
Tender period: startNot published
Tender period: endNot published
Expression of interest deadlineNot published
Enquiry deadlineNot published
Award period: startNot published
Award period: endNot published
Submission method detailsNot published
Submission languagesNot published
Electronic catalogue policyNot published
Total tender value£700,000
Tender lots in source1
Tender items in source1
Tender documents in source0
Awards in latest release0
Contracts in latest release0
Parties in latest release1

Notice history

DateEventReference
13 Aug 2026planning077272-2026

All source data

Unmodified official OCDS data retained by Tenderline for this procurement process.

Complete current OCDS release JSON
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          {
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    },
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    "legalBasis": {
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      "uri": "https://www.legislation.gov.uk/ukpga/2023/54/contents",
      "scheme": "UKPGA"
    },
    "description": "J5 Super Grid Transformer Refurbishment The United Kingdom Atomic Energy Authority would like to invite suppliers who are interested in this requirement to attend a scheduled site visit, prior to a tender exercise being released for the above requirement. Values listed below are an estimate, and the UKAEA are currently undertaking cost exercises alongside this notice, in order to build upon our current estimates and scope development prior to conducting a tender exercise. Interested parties should contact us via the below link in order to arrange attendance at our site visit. Please use the attached site visit request form and return to us via the EU Supply link below. Scheduled Dates: - Wednesday 26th August, 9:00am Further dates are available on request, as well as further visits to be arranged during the tender period. Outline Scope of Requirement: This project concerns the strategic life-cycle management of Super Grid Transformers SGT1A, SGT1B, and SGT1C, located north of the J5 Substation. These critical assets are currently integrated into the 400kV National Grid network and primarily operate in a parallel configuration to ensure grid stability and redundancy. As these assets approach their fifth decade of service, this project represents a shift from reactive maintenance to a formal Asset Life Extension (ALE) Program. By addressing latent defects and obsolescence during the 2026-2027 shutdown, this scope of work aims to \"reset\" the aging clock of the SGTs, ensuring their continued reliability and operational integrity for a projected further 10 to 15-year life cycle.",
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      }
    ]
  },
  "initiationType": "tender"
}
Complete JSON history (1 releases)
13 Aug 2026 · 077272-2026 · planning
{
  "id": "077272-2026",
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  "date": "2026-08-13T14:01:42+01:00",
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            "scheme": "CPV",
            "description": "Repair and maintenance services of transformers"
          },
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            "id": "45453100",
            "scheme": "CPV",
            "description": "Refurbishment work"
          },
          {
            "id": "71334000",
            "scheme": "CPV",
            "description": "Mechanical and electrical engineering services"
          }
        ]
      }
    ],
    "title": "J5 Super Grid Transformer Refurbishment",
    "value": {
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      "currency": "GBP",
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    },
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    "legalBasis": {
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    "communication": {
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}