Integrated Solar Photovoltaic and Battery System 2026/27 Project

Overview The City of Stirling (City) is inviting submissions from a suitably qualified and resourced contractor to provide a complete turnkey solution for solar carpark infrastructure and solar photovoltaic (PV) systems with integrated battery energy storage systems (BESS) at two City sites. Scope The scope includes: Design, supply, installation, testing, and commissioning of solar carpark infrastructure and solar PV systems with integrated BESS at the City of Stirling Administration Centre Staff Carpark, 25 Cedric Street, Stirling WA 6021 Design, supply, installation, testing, and commissioning of solar carpark infrastructure and solar PV systems with integrated BESS at the City of Stirling Libraries, Dianella, Lot 79 Chester Avenue, Dianella WA 6059 Tenderers are encouraged to demonstrate innovative approaches to system design and installation and may propose alternative solutions to enhance system capacity and optimise overall configuration, maximising use of the nominated inverter capacity while remaining compatible with each site's existing electrical connection infrastructure. The proposed system must use commercial-grade equipment and be designed to support future expansion. The system architecture, including PV inverters, BESS, energy management systems, and associated infrastructure, must be scalable to accommodate future capacity increases and backup power functionality without requiring major replacement of core components. Contractor Requirements All works must comply with current Clean Energy Council (CEC) requirements, Western Power technical standards, and relevant Australian/New Zealand Standards (AS/NZS) Instructions to Tenderers Alternative Offer In addition to the conforming offer, tenderers are encouraged to submit a value-added alternative offer that delivers enhanced outcomes and long-term value to the City. Alternative offers may include increased PV generation capacity, larger BESS, enhanced inverter capacity, containerised battery solutions, backup power functionality, or other innovative solutions. Any alternative offer must maintain compliance with the project objectives and demonstrate how the proposed solution supports future system expansion, resilience, and integration of additional renewable energy and energy storage infrastructure. Tenderers must clearly identify the additional scope, benefits, and associated costs of the alternative offer. A Tenderer may submit an alternative tender as soon as a conforming tender has been lodged. Please refer to the 'Instructions' tab of this IFT for guidance. All questions must be submitted via the 'Contact Request Manager' function and will be responded to via an addendum to all Tenderers. For further information, refer to the 'Instructions' tab of this IFT. A Frequently Asked Questions (FAQs) section related to the E-tendering system is provided on the City's website. Tenders will be opened at the City's Main Administration Building, 25 Cedric Street, Stirling, after the Tender Deadline. Contract Terms and Conditions A minimum of one pre-qualified supplier is anticipated to be engaged The City reserves the right to award contracts to multiple suppliers if deemed appropriate Tender Briefing and Site Inspection A Mandatory Briefing (refer to Conditions of Tendering Clause 5.3) will be held to provide Tenderers with the opportunity to clarify any uncertainties about the IFT prior to the Tender Deadline. No pre-registration is required, as signing of the attendance register will take place at the Briefing. Sub-contractors, sub-consultants, and tradespeople are welcome to attend. Location: City of Stirling Administration Centre Staff Carpark, 25 Cedric Street, Stirling WA 6021 Date: 3 November 2026 Time: 10:00am to 10:45am Location: City of Stirling Libraries, Dianella, Lot 79 Chester Avenue, Dianella WA 6059 Date: 3 November 2026 Time: 11:00am to 11:30am