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Maentwrog Hydro Power Station Optimisation Services

Nuclear Decommissioning Authority Published 21 Jul 2026 Find a Tender

key details

Statuscomplete
Procedureopen
OCIDocds-h6vhtk-056518

Award

SupplierValueDateStatus
Gridbeyond Ltd £1,092,000 20 Jul 2026 pending

description

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.

notice history

6 notices published against this procurement.

PublishedTypeRegimeNotice
24 Jul 2025 Preliminary market engagement (UK2) Procurement Act 2023 042600-2025
24 Jul 2025 Preliminary market engagement (UK2) Procurement Act 2023 042773-2025
30 Jul 2025 Preliminary market engagement (UK2) Procurement Act 2023 044064-2025
30 Jul 2025 Preliminary market engagement (UK2) Procurement Act 2023 044083-2025
13 Jan 2026 Tender notice (UK4) Procurement Act 2023 002854-2026
21 Jul 2026 Contract award (UK6) Procurement Act 2023 068694-2026

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