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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsSolar Photovoltaic Installation Projects at Little Marlow and Maidenhead
    Closed contract

    Solar Photovoltaic Installation Projects at Little Marlow and Maidenhead

    Tender closed
    15 Sept 2026
    7 weeks ago

    Thames Water is seeking an experienced supplier to design, install, and operate two solar PV plants with capacities up to 1,000kWAC and 450kWAC at Little Marlow and Maidenhead sites.

    🇬🇧United Kingdom· South EastPublished 18 Aug 2026· 2 months agoviaFind a Tender
    Tender closed
    15 Sept 2026
    7 weeks ago
    Tender deadline passed on 15 Sept 2026.

    Decision brief

    4 fields
    • Contract value
      Not disclosed
      Source did not declare a figure
    • Tender closed
      15 Sept 2026
      1 month ago
    • Sector
      Energy & Utilities
      Browse related listings
    • Location
      🇬🇧United Kingdom
      South East

    Lifecycle

    Closed

    Tender closed on 15 Sept 2026. Awaiting award.

    18 Aug 2026Today15 Sept 2026

    Brief

    Thames Water is seeking a qualified supplier to design, engineer, procure, install, commission, operate and maintain two ground-mounted solar photovoltaic (PV) installations. The sites are located at Little Marrow and Maidenhead, with maximum capacities of 1,000kWAC and 450kWAC respectively. The successful supplier will handle the complete project lifecycle including full design and engineering, procurement, installation, commissioning, DNO witnessing and testing, OFGEM accreditation support for REGOs, operation and maintenance, monthly and annual reporting, staff training, documentation, fencing, signage, and biodiversity net gain compliance. The project will be awarded under either an Energy Performance Contract (EPC) or Power Purchase Agreement (PPA) model, with only one contract to be awarded. Key supplier requirements include Achilles Verification accreditation, relevant experience in project planning, management and monitoring, and compliance with water industry standards such as WIMES where applicable. Suppliers must design and optimise the PV installations for behind-the-meter deployment to achieve attractive payback periods and net present value (NPV). The deadline for Pre-Qualification Questionnaire (PSQ) submission is 15 September 2026 at 12:00 p.m.

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    View on sourceFind a Tender

    Original closed notice on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-06e68b

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    Buyer
    THAMES WATER UTILITIES LIMITED
    Sector
    Energy & Utilities