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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 AuthorityNuclear Decommissioning AuthorityScope & CategoriesNot publishedSubmission Window
Closed
17 Feb 2026, 12:00 GMT
Submission GatewayDirect notice routeLegal Basis & RegimeStandard procurementEstimated Value (exc. VAT)£1,092,000
Bidder Intelligence · Authority Profile: Nuclear Decommissioning Authority
Market Analytics
View Authority Profile →
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
Requires at least 5 comparable procedures
Competition Density
Not availableNo published reports
Bid counts are not published for this buyer
Supplier ConcentrationHigh Concentration
Government Actuary DepartmentTop vendor: 54.6% of attributable value
Payment Terms
Check noticePublished terms
Payment obligations depend on the applicable regime and contract. Consult the official documents.
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 Unpublished data stays unknown.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 NameHistoric AwardsAttributable GBP Value
Government Actuary Department1 win£165,000
TUV SUD Limited1 win£136,931
Procedure terms
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
  1. Official notice release published
    31 Jul 2026, 10:56 BST
  2. tender value changed
    21 Jul 2026, 13:17 BST
  3. Status changed to complete
    21 Jul 2026, 13:17 BST
  4. Official notice release published
    21 Jul 2026, 13:17 BST
  5. Submission deadline changed to published date
    21 Jul 2026, 13:17 BST
  6. Published value updated to £1,092,000
    13 Jan 2026, 16:51 GMT
  7. Status changed to active
    13 Jan 2026, 16:51 GMT
  8. Official notice release published
    13 Jan 2026, 16:51 GMT
  9. Submission deadline changed to 17 Feb 2026, 12:00 GMT
    13 Jan 2026, 16:51 GMT
  10. Official notice release published
    30 Jul 2025, 09:33 BST
  11. Official notice release published
    30 Jul 2025, 08:36 BST
  12. Official notice release published
    24 Jul 2025, 13:47 BST
  13. Published value updated to £1,100,000
    24 Jul 2025, 09:55 BST
  14. Status changed to planning
    24 Jul 2025, 09:55 BST
  15. Official notice release published
    24 Jul 2025, 09:55 BST
  16. Buyer information updated
    24 Jul 2025, 09:55 BST
Lots and requirements (1)
Published by the contracting authority
  • Lot 1 · #1
    Individual lot title not published
    complete
    Published valueNot published
    The source published no individual title or description for this lot.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
Timeline
  1. Procedure published
    31 Jul 2026, 10:56 BST
  2. Submission deadline
    17 Feb 2026, 12:00 GMT
  3. Award active
    Not published · Not published
  4. 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 BST4 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-PXDL
View buyer profile
  • Nuclear Decommissioning Authority
    buyer

    GB-PPON: PVDH-2346-PXDL
    Herdus House Westlakes Science and Technology Park Moor Row, Cumbria, UKD11, CA24 3HU, GB
    01925 802895
  • Gridbeyond Ltd
    supplier

    GB-COH: 08211691
    Office 7.08 The Office Group, Gridiron Building, 1 Pancras Square, King’s Cross L, London, UKI31, N1C 4AG, GB
Documents (1)
Official links; attachments are not copied
  • Not published

    tender
    conflictOfInterest
Related procedures (0)
No data
No related procedures published