Find a Tender
complete
Official procurement procedure
Maentwrog Hydro Power Station Optimisation Services
No classification published
Location not published
Published value
£1,092,000
Submission deadline 17 Feb 2026, 12:00 GMT
Lots published1
Procurement Executive Summary
AI & Search Synopsis
Generated from official OCDS record
Tenderline Synopsis: Nuclear Decommissioning Authority: "Maentwrog Hydro Power Station Optimisation Services". Published status: complete. Published value: £1,092,000. 1 published lot. Recorded submission deadline: 17 Feb 2026, 12:00 GMT. See the official notice for participation instructions.
| Contracting Authority | Nuclear Decommissioning Authority | Scope & Categories | Not published | Submission Window | Closed 17 Feb 2026, 12:00 GMT |
|---|---|---|---|---|---|
| Submission Gateway | Direct notice route | Legal Basis & Regime | Standard procurement | Estimated Value (exc. VAT) | £1,092,000 |
Bidder Intelligence · Authority Profile: Nuclear Decommissioning Authority
Market Analytics
Derived from OCDS awards & bid statistics
Published history for Nuclear Decommissioning Authority. These figures describe retained records, not a forecast of bids or a measure of buyer bias.
Published-to-award variance
Not availableInsufficient comparable data
Competition Density
Not availableNo published reports
Supplier ConcentrationHigh Concentration
Government Actuary DepartmentTop vendor: 54.6% of attributable valuePayment Terms
Check noticePublished terms
Coverage: 81 active published awards; 0 bid reports (which may be per lot). Supplier values exclude multi-supplier awards, frameworks and DPS, and use GBP only. They are published award values, not payments. Published-to-award variance compares single-lot, single-award, single-supplier GBP procedures with explicitly non-framework/non-DPS status; increases remain in the average. Unpublished data stays unknown. Awarded suppliers are winners, not all bidders.
Historical Awarded Suppliers With This Authority:
| Supplier Name | Historic Awards | Attributable GBP Value |
|---|---|---|
| Government Actuary Department | 1 win | £165,000 |
| TUV SUD Limited | 1 win | £136,931 |
Procedure terms
Contracting AuthorityNuclear Decommissioning Authority | Procedure methodNot published | Procurement categoryNot published |
Statuscomplete | Framework / DPSNot published | CompetitionNot published |
Above thresholdNot published | Legal basisNot published | Tender period startsNot published |
Clarification deadlineNot published | Electronic submissionNot published | Submission languagesNot published |
Published31 Jul 2026, 10:56 BST | Last source update31 Jul 2026, 10:56 BST | Recurring procurementNot published |
ClassificationNot published | ||
Delivery areaLocation not published | ||
OCIDocds-h6vhtk-056518 | ||
What is being bought
NDA is a non-departmental public body charged, on behalf of government, with the mission to clean-up the UK’s earliest nuclear sites safely, securely and cost effectively. We’re committed to overcoming the challenges of nuclear clean-up and decommissioning, leaving the 17 nuclear sites ready for their next use. We do this work with care for our people, communities and the environment, with safety, as always, our number one priority. We also play an important role in supporting government’s aspiration for the UK to be a global leader in the civil nuclear sector. We strive to deliver best value for the UK taxpayer by focusing on reducing the highest hazards and risks, while ensuring safe, secure, and environmentally responsible operations at our sites. We seek ways to reduce the level of public funding from government by generating revenue through our commercial activities.
Maentwrog Hydroelectric Power Station (“Maentwrog”) is a 28MW hydroelectric plant owned by NDA and operated by Magnox Limited (“Magnox”).
The NDA is seeking to engage with economic operators obtain feedback regarding a forthcoming tender to appoint an economic operator to deliver energy generation and trading optimisation services for the NDA's Maentwrog Hydropower station asset. The core service to be delivered includes, but is not limited to the provision of trading available energy generation capacity within the wholesale market, based upon fundamental and technical analysis, market expertise and available generation capacity based upon water volumes, rainfall and available measurements within defined operational parameters.
The aim of this procurement is to increase income generation to support the NDA in delivering it's mission.
It is anticipated that the agreement may be based upon a 2 year initial term with 2 twelve month optional extensions.
It is anticipated that the total contract value will be circa £240,000 and £500,000 for the initial term, with a potential income value between £480,000 and £800,000 across a potential total 4-year term, subject to Supplier performance. Please note, we appreciate that income will change based upon market conditions and fluctuations, therefore these are indicative estimates.
What changed
From the official release history
- Official notice release published
31 Jul 2026, 10:56 BST - tender value changed
21 Jul 2026, 13:17 BST - Status changed to complete
21 Jul 2026, 13:17 BST - Official notice release published
21 Jul 2026, 13:17 BST - Submission deadline changed to published date
21 Jul 2026, 13:17 BST - Published value updated to £1,092,000
13 Jan 2026, 16:51 GMT - Status changed to active
13 Jan 2026, 16:51 GMT - Official notice release published
13 Jan 2026, 16:51 GMT - Submission deadline changed to 17 Feb 2026, 12:00 GMT
13 Jan 2026, 16:51 GMT - Official notice release published
30 Jul 2025, 09:33 BST - Official notice release published
30 Jul 2025, 08:36 BST - Official notice release published
24 Jul 2025, 13:47 BST - Published value updated to £1,100,000
24 Jul 2025, 09:55 BST - Status changed to planning
24 Jul 2025, 09:55 BST - Official notice release published
24 Jul 2025, 09:55 BST - Buyer information updated
24 Jul 2025, 09:55 BST
Lots and requirements (1)
Published by the contracting authority
- Lot 1 · #1Individual lot title not publishedcompletePublished valueNot publishedThe source published no individual title or description for this lot.Contract periodNot publishedEligibilityNot publishedOptions / renewalNot published
Timeline
- Procedure published
31 Jul 2026, 10:56 BST - Submission deadline
17 Feb 2026, 12:00 GMT - Award active
Not published · Not published - Contract active
Signed 31 Jul 2026, 00:00 BST · £1,092,000
Commercial outcome and competition
Awards Gridbeyond Ltd Not published · Not published · active |
Contracts Maentwrog Hydro Power Station Optimisation £1,092,000 · signed 31 Jul 2026, 00:00 BST · active Contract period: 5 Oct 2026, 00:00 BST — 4 Oct 2028, 23:59 BST |
Bid statisticsNo aggregate bid statistics published |
Buyer and organisations in this procedure
Nuclear Decommissioning Authority
Contracting authority GB-PPON-PVDH-2346-PXDLDocuments (1)
Official links; attachments are not copied
Related procedures (0)
No related procedures published