UK healthcare, specifically NHS England, has mandated strict decarbonisation compliance targets for its entire supply chain. To achieve its ultimate goal of a net-zero supply chain by 2045, the NHS is enforcing escalating requirements that directly dictate who can win and maintain healthcare contracts.
As a result, the race is on for healthcare facilities to review their power infrastructure and decarbonise. Against this backdrop, electrical contractor W Portsmouth & Co. Ltd engaged Shenton Group to support the upgrade of the standby power infrastructure at the Hospital, run by the NHS Foundation Trust, as part of a wider programme of improvements across the hospital’s backup power infrastructure.
Originating from a design order in February 2024, this project marked the first phase of a wider programme of planned generator and equipment replacements.
The project required the decommissioning and removal of the existing generators and associated infrastructure, followed by the installation of a new high-capacity standby power solution. The upgrade formed part of the hospital’s response to the Government’s decarbonisation strategy, which required the standby power infrastructure to support evolving electrical demands as the existing installation no longer aligned with the site’s current and future load requirements.
Beyond replacing outdated equipment, the new installation needed to incorporate modern systems including fuel storage, emissions management via SCR technology, and integrated controls. Because work was carried out within a live healthcare environment, careful planning and coordination were essential to ensure continuity of operations.
The site’s location added further complexity: a busy London hospital campus with limited space demanded the challenging management of deliveries, equipment positioning, and installation activities. W Portsmouth and the Healthcare facility needed a partner capable of delivering a fully integrated, end-to-end solution, covering design, supply, installation, Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT), and commissioning, while keeping the site online throughout the transition.
Shenton Group designed and delivered a high-capacity standby power solution incorporating two 1,650 kVA generators housed in bespoke acoustic enclosures. The installation was engineered to meet the latest emissions standards through integrated SCR systems, supported by dedicated AdBlue infrastructure including fill points and pipework. To ensure extended resilience, a bulk fuel system was installed providing up to 200 hours of runtime, alongside associated fuel pipework and a comprehensive control setup.
The project included full FAT, commissioning, and SAT to confirm the system met all operational and compliance requirements, including G99 standards.
The solution was designed and installed in accordance with relevant HTM (Health Technical Memorandum) guidance, ensuring compliance with NHS standards for critical healthcare infrastructure.
The project was completed successfully: on time, in budget, and with reliable power maintained throughout.
The hospital gained a fully compliant, high-capacity standby power system with extended runtime resilience, positioning the NHS London Hospital to meet current and future NHS decarbonisation requirements. Generators were replaced one at a time, avoiding temporary generator rental costs altogether while maintaining continuous backup power coverage.
Shenton Group brings extensive experience delivering standby power projects across the healthcare sector, backed by accreditations directly relevant to NHS supply chain compliance.
This includes ISO 14001 for environmental management, which is increasingly significant given the NHS’s requirement for suppliers to demonstrate environmental compliance as part of its net-zero supply chain targets, alongside ISO 9001 (quality management) and ISO 45001 (health and safety), both of which are particularly relevant to delivering complex works safely within a live hospital environment.
Shenton Group also holds UVDB Achilles and Constructionline registrations, supporting compliance within public sector and NHS procurement frameworks, together with CHAS Advanced and SafeContractor health and safety accreditations.
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