Official UK procurement notice
J5 Super Grid Transformer Refurbishment
Authority: UK Atomic Energy Authority (Central government)
What is being bought
Published requirement descriptionProvision of the refurbishment of three super grid transformers on the Culham Campus, as part of an Asset Life Extension Programme to the SGTs.
CPV: Mechanical and electrical engineering services · Refurbishment work · Repair and maintenance services of transformers
The lotProcurement structure
single lot · value publishedWhat it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Lot awarding rule: As stated within the Invitation to Tender documentation
No conditions of participation were published on the notice; check the tender documents.
- Turnover usually expected at this size: about £4,000,000 (twice the annual value).
Turnover is an indicative market norm (≈2× annual value), not a published condition.
Competition analysis · published record, not a forecast of who will bid
How UK Atomic Energy Authority buys Other building completion work (CPV 4545), and who usually turns up
UK Atomic Energy Authority’s own published record, next to the published market for the same work. Frameworks and DPS are kept out: they attract a different number of bids. Whole-market view: Other building completion work (CPV 4545) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
i
How often small and medium firms win.
Share of awards where the winner’s size is known.
The counts under this question show how many awards have a known supplier size.
Small firms have won here. Neither number says whether you qualify; it describes who has been winning.
i
How often local firms win similar work.
Winners with a registered address in the delivery region, out of awards with a known address.
Here, local means registered in South East England (authority’s region).
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners are registered outside South East England.
i
How long buyers here take to decide after bids close.
Middle value in days from the deadline to the first award notice, on competitions that published both dates.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards were announced within 27 days of the bid deadline.
i
How often work is awarded with no recorded rival.
Direct awards and tenders where every published lot count shows one bid.
Both shares are minimums: some awards have no bid count.
Thin markets produce this too; it is not proof of a tailored specification.
Direct awards or one recorded bid are common here. Check the route before spending time on a bid.
How many bids did past lots attract?
i
How many bids past lots received.
Each colour is a bid-count range. Only competed lots with a published count are included.
Past bids do not predict this tender.
1 bid24% / 23%
2–338% / 4%
4–616% / 27%
7+22% / 46%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Each colour shows awards below, close to or above the published estimate, one lot at a time.
Past prices are a guide, not a bid price.
Below estimate40% / 31%
Within ±2%37% / 31%
Above estimate23% / 38%
Assess each lot i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list
Lot #1CPV 4545Published estimate£2.0m
i
How many bids this lot may attract.
The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.
Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative.
A forecast, not a list of bidders.
1 bid4%
2–314%
4–615%
7+67%
i
Where the award price may land.
The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.
Based on 17 comparable awards. Each lot reflects its own category; forecasts for different lots of the same notice are not comparative.
A statistical guide from past awards, not a price to bid.
Middle 50%£2.0m–£2.0m
Estimate£2.0m
Who has supplied this buyer on similar work? i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
No earlier contract of this buyer matches this lot on the published record.
Who could compete for this lot? i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
| Supplier | Won in this category | Live contracts | Award vs estimate |
|---|---|---|---|
| £3.8m9 awards in 36m · last 3 months ago | 3 live · £1.3m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | 30% below n=1 | |
| £605k8 awards in 36m · last 2 months ago | 1 live · £45k iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | no comparable pairs | |
| £364k7 awards in 36m · last 2 months ago | 5 live · £394k iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | no comparable pairs | |
DES Energy LtdLarge | £2.0m2 awards in 36m · last 1 months ago | None on file | 50% below n=1 |
| £15m3 awards in 36m · last 13 months ago | None on file | 37% above n=1 |
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
- Forecasts are labelled. The price forecast and its range, possible competitors and the match score are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.
Procedure terms & legal framework
From the official record- Procedure method
- Below threshold - open competition
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Works
- Notice status
- Open for tender
- Procurement threshold
- Below threshold
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 13 Aug 2026, 14:01 BST
- Last source update
- 7 Oct 2026, 17:07 BST
- Authority reference
T/071CY/26- FTS notice number
2026/S 000-094949- Latest notice
- Tender notice (UK4)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-06e3abFind a Tender
How to participate & submission route
Official notice Submit via EU-Supply (CTM)- Requests to participate (first stage)
- —
- Tender submission deadline
- 5 Nov 2026, 12:30 GMT
- Clarification deadline
- 5 Nov 2026, 12:30 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
Timeline
13 Aug 2026 → 2 Dec 2026 · 7 dates- Planning notice published68 days ago13 Aug 2026, 14:01 BST
- Market engagement53 days ago27 Aug 2026, 23:59 BST
- Next notice expected45 days ago4 Sept 2026, 23:59 BST
- Tender notice published12 days ago7 Oct 2026, 17:07 BST
- Today20 Oct 2026
- Clarification questions byin 16 days5 Nov 2026, 12:30 GMT
- Submission deadlinein 16 days5 Nov 2026, 12:30 GMT
- Contract startsin 43 days2 Dec 2026
Notice history
6 events · 2 releases on Find a Tender · since 13 Aug 2026- Preliminary market engagement notice published13 Aug 2026, 14:01 BSTUK2
- Tender notice published7 Oct 2026, 17:07 BSTUK4
- Published value updated to £2,000,0007 Oct 2026, 17:07 BSTwas £700,000
- Status changed to active7 Oct 2026, 17:07 BST
- Procurement method changed7 Oct 2026, 17:07 BST
- Deadline published: 5 Nov 2026, 12:30 GMT7 Oct 2026, 17:07 BST
Commercial outcome & contract awards
Nothing awarded yet- Awards (0)
- No award published
- Contracts (0)
- No contract published
- Bid statistics
- No aggregate bid statistics published
Contracting authority & participating public bodies
Official documents & specifications (2)
Official links; attachments are not copiedNotices published for this procedure
- Tender notice Tender notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender