FTS UK public procurement

Maentwrog Hydro Power Station Optimisation Services

Nuclear Decommissioning Authority

CompleteOCDS ID ocds-h6vhtk-056518
Tender value£1,092,0002 awards · 1 contracts

01 Procurement

Tender overview

Updated 31 July 2026
Buyer
Nuclear Decommissioning Authority
Status
Complete
Procurement method
Competitive flexible procedure
Category
services
CPV classification
Not supplied
Tender period
Not supplied — 17 February 2026

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.

i

This page represents one OCDS contracting process. Notices can be revised over time. Values may be estimates, award values or contract values and should be read with their displayed stage and date.

02 Awards and contracts

Published award records

2 shown
Pending

Maentwrog Hydro Power Station Optimisation

Awarded
20 July 2026
Award value
£1,092,000
Suppliers
1
Signed contract
Not supplied
Active

Maentwrog Hydro Power Station Optimisation Services

Awarded
Not supplied
Award value
Not supplied
Suppliers
1
Signed contract
30 July 2026

03 Organisations

Buyers, suppliers and other parties

2 parties
Buyer

Nuclear Decommissioning Authority

Herdus House Westlakes Science and Technology Park Moor Row, Cumbria, UKD11, CA24 3HU, United Kingdom

GB-PPON PVDH-2346-PXDL
Supplier

Gridbeyond Ltd

Office 7.08 The Office Group, Gridiron Building, 1 Pancras Square, King’s Cross L, London, UKI31, N1C 4AG, United Kingdom

Companies House 08211691 →

Companies House links appear only for explicit GB-COH identifiers. BritDB does not create company links from a similar name or address.

04 Provenance

Source for this process

Contains public sector information licensed under the Open Government Licence v3.0. Official external links are available only on the source transition page.