Photovoltaic (PV) Installations Little Marlow and Maidenhead
IMPORTANT: Please read this section before deciding whether you wish to register for this event. This section provides you with information regarding the scope of this procurement and details some of the key requirements that a successful applicant MUST be able to deliver.
The following conditions would be considered as some of key requirements for a supplier to meet to be considered for this opportunity:
• Achilles Verification
• Must have relevant experience to plan, manage and monitor the project
• Must be able to comply with water industry standards, such as WIMES, where asset interaction is required
The scope of work includes the finance, engineering, design, procurement, construction, testing and completion, and to operate and maintain two separate solar photovoltaic (PV) plants as summarised in the non-exhaustive list below:
• Full design and engineering
• Procurement
• Installation
• Commissioning
• Distribution Network Operator (DNO) witnessing, testing and approval to satisfy the terms of the connection agreement or offer
• Supporting OFGEM accreditation for REGOs
• Operation and maintenance
• Monthly and annual reporting
• Training of emergency procedures
• Training of essential operational activities
• Documentation
• Demarcation fencing and signage
• Biodiversity net gain requirements and any visual impact requirements
The PV installations are at two separate sites, both being ground mounted, with a maximum capacity of 1,000kWAC and 450kWAC. The Supplier shall design and optimise the size of the PV installation for behind-the-meter and achieve an attractive payback period and NPV.
The scope will be awarded be via either an EPC or PPA (Power Purchase Agreement) model, with only one to be awarded.
Thames Water reserves the right to refine the award criteria. Please note that that deadline for asking for access to the PSQ & submitting of the PSQ is 22 September 2026, at 12:00 p.m.
Targeted Catchment Investigation and CCTV & Cleaning
Lot 1 - Targeted Catchment Investigations (TCI) This lot covers the delivery of Targeted Catchment Investigations (TCIs) across Thames Water's wastewater network to identify and reduce the risk of sewer blockages, pollution incidents, sewer flooding and customer service disruption.
Suppliers will be required to undertake investigations within defined catchment areas identified by Thames Water. Activities may include sewer and manhole inspections, sewer cleaning, CCTV surveys, identification of root causes of network issues, delivery of first time-fix activities where appropriate, and the development of recommendations for follow-on works.
Suppliers will be responsible for providing all labour, vehicles, equipment and associated resources necessary to deliver the services, together with the collection and submission of inspection data, CCTV records, photographs and other required outputs.
The framework will operate across the Thames Water region. Work packages will be issued by Thames Water throughout the term of the framework and may vary in size, volume and location.
Successful suppliers will be required to work collaboratively with Thames Water to support operational performance, environmental protection and customer outcomes.
Lot 2 - CCTV & Cleaning This lot covers the provision of planned CCTV inspection and sewer cleaning services across Thames Water's wastewater network, including specialist cleaning activities and associated support services such as flow management, waste disposal, and related operational works.
Suppliers will be required to undertake sewer cleaning and CCTV investigations to identify, record, and report on blockages, silt build-up, structural defects, root ingress, and other operational issues within the network. Services may include CCTV enabling activities, defect identification and coding, emergency response works, pollution escalations, and customer and stakeholder engagement where required.
Suppliers will provide all labour, vehicles, plant, equipment, permits, licences, traffic management, and associated resources required to deliver the services in accordance with relevant industry standards and Thames Water procedures. Services may be delivered across public highways, private land, and other locations throughout the Thames Water region, and may include both planned and reactive activities. Suppliers will be responsible for providing all required survey, inspection, waste disposal, and job completion records and will work collaboratively with Thames Water to support network performance, environmental compliance, and customer outcomes.
Thames Water reserves the right to refine the award criteria. Please note that that deadline for asking for access to the PSQ & submitting of the PSQ is 28 September 2026, at 12:00pm.