Scope
Reference
C26564
Description
Background Maentwrog Power Station is a 30MW hydroelectric power station located just outside the village of Maentwrog. The station draws its water supply from Trawsfynydd Lake located above the station. The lake is man made, and was formed by the construction of four dams, which between them impound the water to form Llyn Trawsfynydd. A series of canals, called leats, have been constructed in the adjoining mountain sides, which direct the rainfall from the mountain sides into the lake, thus increasing the lakes catchment area. Scope of Works To provide a plant and labour resource on a 'call off' basis to support general civil maintenance within the lake's 35 sq mile catchment area and at the Power Station Site. This call off may be required at very short notice, less than 24 hours but a 2 to 3 week notice period is more typical. Typical examples of this work could be but not limited to: • Excavation work utilising excavator type machinery, in and out of shallow water environments • General carpentry & light metal fabrication works • General masonry repairs & plastering • Catchment maintenance, which would typically include: o Gravel removal and general pitching repairs local to Weirs o Concrete repairs and expansion joint resealing o Gate & Fencing repairs and replacement o Manual ditch clearance • Laying of small structure bases, such as bases for steel trellis access platforms • General hand digging and soil removal, such as from under pipes and other areas where access via excavators is generally not possible due to the terrain. • Assistance in transporting heavy equipment or plant from power station to remote areas, utilising a telehandler or excavator/JCB jib.
Contract dates (estimated)
- 3 November 2025 to 31 October 2029
- 3 years, 11 months, 28 days
Main procurement category
Works
CPV classifications
- 45232451 - Drainage and surface works
- 77314000 - Grounds maintenance services
Engagement
Engagement deadline
18 July 2025
Engagement process description
Please confirm if you would be interested in visiting Maentwrog site, date TBC.
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Publication date of tender notice (estimated)
4 August 2025
Contracting authority
Nuclear Restoration Services Limited
- Public Procurement Organisation Number: PXPQ-2228-DGTY
Hinton House, Birchwood Park Avenue, Risley
Warrington
WA3 6GR
United Kingdom
Contact name: Lindsay Gibson
Email: lindsay.gibson@nrservices.uk
Website: https://www.gov.uk/government/organisations/nuclear-restoration-services
Region: UKD61 - Warrington
Organisation type: Public authority - sub-central government