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PROCUREMENT OPPORTUNITY

Maentwrog Hydro Power Station Optimisation Services

Nuclear Decommissioning Authority · Contract details notice on Find a Tender

Tender information last checkedLast checked 26 Sept 2026, 11:27.

Opportunity overview

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 to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

Gridbeyond Ltd

Matched by number
Contract value
£1.1m
Awarded
Not supplied
Contract signed
30 Jul 2026
Including VAT
£1.3m
Award ID
2
Status
active
Identifier
GB-COH 08211691
Location
London, UKI31, N1C 4AG, United Kingdom

Classification

No classification was supplied.

Lots

  • Lot 1Value not stated

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
C32127
Status
complete
Procurement Method
open
Procurement Method Details
Competitive flexible procedure

Legal basis

Id
2023/54
Scheme
UKPGA

Lots and requirements

Entry 1
Id
1
Status
complete

Published documents

Entry 1
Id
conflictOfInterest
Document Type
conflictOfInterest
Description
Not published

Buyer, suppliers and contacts

Organisation 1
Name
Nuclear Decommissioning Authority
Id
GB-PPON-PVDH-2346-PXDL

Identifier

Scheme
GB-PPON
Id
PVDH-2346-PXDL

Address

Street Address
Herdus House Westlakes Science and Technology Park Moor Row
Locality
Cumbria
Postal Code
CA24 3HU
Country
GB
Country Name
United Kingdom
Region
UKD11

Contact

Name
Madeline Jones
Telephone
01925 802895

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
publicAuthorityCentralGovernment
Description
Public authority - central government
Organisation 2
Name
Gridbeyond Ltd
Id
GB-COH-08211691

Identifier

Scheme
GB-COH
Id
08211691

Address

Street Address
Office 7.08 The Office Group, Gridiron Building, 1 Pancras Square, King’s Cross L
Locality
London
Postal Code
N1C 4AG
Country
GB
Country Name
United Kingdom
Region
UKI31

Contact

Roles

supplier

Details

Scale
sme
Vcse
Yes
Public Service Mission Organization
No
Sheltered Workshop
No

Award information

Award 1
Id
2
Status
active
Main Procurement Category
services

Items

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
71314000
Description
Energy and related services
Entry 2
Scheme
CPV
Id
38551000
Description
Energy meters
Entry 3
Scheme
CPV
Id
65300000
Description
Electricity distribution and related services
Entry 4
Scheme
CPV
Id
09310000
Description
Electricity
Entry 5
Scheme
CPV
Id
72227000
Description
Software integration consultancy services
Entry 6
Scheme
CPV
Id
71241000
Description
Feasibility study, advisory service, analysis
Entry 7
Scheme
CPV
Id
79930000
Description
Specialty design services
Entry 8
Scheme
CPV
Id
71314300
Description
Energy-efficiency consultancy services
Entry 9
Scheme
CPV
Id
31682000
Description
Electricity supplies
Entry 10
Scheme
CPV
Id
72228000
Description
Hardware integration consultancy services
Entry 11
Scheme
CPV
Id
09300000
Description
Electricity, heating, solar and nuclear energy
Entry 12
Scheme
CPV
Id
65400000
Description
Other sources of energy supplies and distribution
Entry 13
Scheme
CPV
Id
71314200
Description
Energy-management services
Entry 14
Scheme
CPV
Id
65410000
Description
Operation of a power plant
Entry 15
Scheme
CPV
Id
51112200
Description
Installation services of electricity control equipment

Suppliers

Supplier 1
Id
GB-COH-08211691
Name
Gridbeyond Ltd

Related lots

1

Contracts and changes

Entry 1
Id
2
Award ID
2
Title
Maentwrog Hydro Power Station Optimisation
Status
active
Has Renewal
Yes
Has Options
Yes
Above Threshold
Yes
Date Signed
31 Jul 2026, 00:00

Period

Starts
5 Oct 2026, 00:00
Ends
4 Oct 2028, 23:59
Max Extent Date
4 Oct 2030, 23:59

Renewal

Description
12+12 Options on approval from the Authority

Options

Description
12+12 Options on approval from the Authority

Value

Including VAT
1,310,400
Amount
1,092,000
Currency
GBP

Agreed Metrics

Entry 1
Id
0072
Title
Trading Performance
Description
Performance versus N2EX Day-Ahead Auction Price

Observations

Entry 1
Id
frequency

Period

Duration In Months
1
Entry 2
Id
0073
Title
Lake Level Management
Description
Maintenance of lake level between upper and lower thresholds, avoiding, where possible, overspilling of the reservoir or exposure of the lake bed.

Observations

Entry 1
Id
frequency

Period

Duration In Months
1
Entry 3
Id
0074
Title
Management Information
Description
The actual receipt of the management information required by the Generator’s contract manager by [tobe agreed] day of each Month.

Observations

Entry 1
Id
frequency

Period

Duration In Months
1
Entry 4
Id
0075
Title
Social Value
Description
The actual performance, with supporting evidence of delivery of the individual elements of the social value delivery plan

Observations

Entry 1
Id
frequency

Period

Duration In Months
3
Entry 5
Id
0076
Title
Annual Review Meeting
Description
Annual review to be completed within 1 Month of the contract anniversary and on an annual basis.The revise must include●Annual Performance Summary Review●Presentation & review of additional income generating opportunities or markets which mayor could become available to NDA to increase return on investment for the NDA. (This information must be captured and an owner assigned to each initiative. If the initiative is not appropriate, it must be marked as closed,documenting the reason why.)●Proposed/ potential opportunities or changes to trading strategy for consideration.

Observations

Entry 1
Id
frequency

Period

Duration In Months
12

Documents

Entry 1
Id
072589-2026
Document Type
contractNotice
Notice Type
UK7
Description
Contract details notice on Find a Tender
Published
31 Jul 2026, 10:56
Format
text/html

Recorded locations

  • Buyer location · Cumbria · UKD11 · CA24 3HU · United Kingdom

Notice and amendment history

3 published notice versions reviewed by ProcuraAxis.

3 VERSIONS
  1. 002854-2026Tender notice on Find a Tender ·
  2. 068694-2026Contract award notice on Find a Tender ·
  3. 072589-2026Contract details notice on Find a Tender ·