Closed tender

Maentwrog Hydro Power Station Optimisation Services

Details

Value
£1,092,000
Topic
Electricity, heating, solar and nuclear energy
Published
13 January 2026
Submission
17 February 2026

Tender 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.

Timeline

  1. Completed: Tender published13 January 2026
    Current notice
  2. Completed: Submission date17 February 2026

About the buyer

Nuclear Decommissioning Authority (NDA) is a non-departmental public body that oversees the clean-up of the UK's former nuclear sites, sponsored by the Department for Energy Security and Net Zero. Four group companies, including Sellafield and Nuclear Restoration Services, deliver its site programmes. Meet the Buyer events connect suppliers with upcoming opportunities across the group. The authority has set a target for 9% direct spend with SMEs by 2027/28.

Over the past 5 years, most of NDA's contract awards have been in research and development, business services and IT services.

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