THAMES WATER UTILITIES LIMITED
Photovoltaic (PV) Installations Little Marlow and Maidenhead
The procurement contact named on the official notice.
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The submission route named on the official notice.
THAMES WATER UTILITIES LIMITED has published 3 Petroleum, Fuel & Energy Products notices, about every 20 months. On that rhythm the next one is expected around April 2028.
10% of THAMES WATER UTILITIES LIMITED’s awards go to a supplier it has used before.
Which is the argument for getting on the list rather than winning this one. The incumbent is rarely the last winner — it is the roster. See the retention odds by category →
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 15 September 2026, at 12:00 p.m.
What the notice asks for
This section provides you with information regarding
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.
Must have relevant experience to plan, manage
Must have relevant experience to plan, manage and monitor the project.
Must be able to comply with water
Must be able to comply with water industry standards, such as WIMES, where asset interaction is required.
The scope of work includes the finance
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:.
The Supplier shall design and optimise
The Supplier shall design and optimise the size of the PV installation for behind-the-meter and achieve an attractive payback period and NPV.
Sentences from the notice that state an obligation, surfaced automatically and shown in the order they appear. Not an exhaustive list — always confirm against the tender documents.
What it takes to bid this
Typical UK bid effort for the value not published — mid-band assumed band — an estimate, not a quote.
Qualify & bid/no-bid ~10% · SQ / PQQ ~20% · Written response ~55% · Review & presentation ~15%
Stated in this notice
- Hold at bidSSIP-family accreditation (CHAS / Constructionline / SafeContractor)“…o be considered for this opportunity: • Achilles Verification • Must have relevant experience to plan, manag…”
Typical for this category — confirm against the ITT pack
- Show at bidComparable references / case studies
- Hold at bidFinancial standing (accounts, often ~2× contract value turnover)
- Hold at bidInsurance cover (PL / EL, often PI)
- Show at bidSocial value commitments
Hold at bid = pass/fail conditions of participation. Show at bid = scored in the quality response. Plan for delivery = contract obligations from day one.
Make the case to bid
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The full intelligence dossier
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- OCID
- ocds-h6vhtk-06e68b
- Stage
- tender · Open
- Source
- Find a Tender
- Buyer ref
- 078540-2026
Contains public sector information licensed under the Open Government Licence v3.0. Source data © Crown copyright.
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