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Maentwrog Hydro Power Station Optimisation Services

Nuclear Decommissioning Authority

Awarded
services

This tender has closed

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Key details

Contracting authority
Nuclear Decommissioning Authority
Public authority - central government
Region
Cumbria
Delivery: United Kingdom, United Kingdom
Contract value
£1,092,000ex VAT
Submissions closed
Not stated by buyer
Published
31 July 2026

Procurement

Contract period
5 October 2026 - 4 October 2028
2 years
Possible extension to 4 October 2030 · 3 years, 11 months in total
Extension terms: 12+12 Options on approval from the Authority
Procedure type
Competitive flexible procedure
CPV classifications
  • 71314000 Energy and related services
  • 38551000 Energy meters
  • 65300000 Electricity distribution and related services
  • 09310000 Electricity
  • 72227000 Software integration consultancy services
  • 71241000 Feasibility study, advisory service, analysis
  • 79930000 Specialty design services
  • 71314300 Energy-efficiency consultancy services
  • 31682000 Electricity supplies
  • 72228000 Hardware integration consultancy services
  • 09300000 Electricity, heating, solar and nuclear energy
  • 65400000 Other sources of energy supplies and distribution
  • 71314200 Energy-management services
  • 65410000 Operation of a power plant
  • 51112200 Installation services of electrical equipment

What happened

Nuclear Decommissioning Authority awarded this contract to Gridbeyond Ltd worth £1,092,000 on 31 Jul 2026. The contract runs until 4 Oct 2028.

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.

Awarded supplier

Supplier
Award value
£1,092,000
Award date
31 July 2026

Contact

Address
Herdus House Westlakes Science and Technology Park Moor Row, Cumbria, CA24 3HU
Contact name
Madeline Jones

Identifiers

Buyer reference
C32127
Notice ID
072589-2026
OCID
ocds-h6vhtk-056518

Explore related tenders

External ID: fts-ocds-h6vhtk-056518 • Added 21 July 2026