HBC to deliver net-zero Maintenance Delivery Unit for Network Rail in Sheffield

Credit: Network Rail

HBC Construction Limited (HBC) has been appointed by Network Rail to deliver a new, fully sustainable Maintenance Delivery Unit (MDU) at Blast Lane Depot in Sheffield. Valued at £7.2m, the project marks HBC’s second MDU scheme for Network Rail and reinforces the organisation’s commitment to delivering low-carbon, future-ready rail infrastructure across the UK.

The design and build contract was secured through a two-stage procurement process, building on the successful model adopted for the ongoing Barnetby MDU project in North Lincolnshire. The new 15,000 sq ft facility will provide high-quality accommodation for frontline maintenance teams while aligning with Network Rail’s ‘Greener Railway’ strategy.

The Sheffield MDU will be constructed using a modern timber-frame structure and is designed to achieve net zero carbon in operation, alongside a minimum 10% Biodiversity Net Gain. Part-funded through Network Rail’s Green Bank, the project incorporates a wide range of sustainability measures, including heat recovery ventilation, smart lighting and controls, enhanced building fabric, efficient water management systems, and an expanded rooftop solar photovoltaic array.

Close collaboration between HBC and Network Rail during the pre-construction phase has resulted in a more efficient building layout, reducing the overall footprint by more than 25%. This optimisation cuts material use, construction costs and long-term energy demand, while improving operational functionality and future adaptability. Standardising the structural grid and simplifying the building form also enables greater use of off-site construction techniques, reducing waste and disruption.

Externally, the scheme will deliver biodiversity improvements through soft landscaping and pollinator-friendly planting, creating a healthier environment for staff and visitors while strengthening the site’s environmental resilience. Over its first 20 years of operation, the Sheffield MDU is expected to save approximately 850 tonnes of CO₂e, equivalent to 42.5 tonnes annually, compared with a conventional facility.

Lee Powell, Managing Director at HBC, said the project demonstrates how repeat collaboration can drive sustainable outcomes, while Chris Round, Senior Portfolio Manager at Network Rail, highlighted the long-term benefits the facility will deliver for frontline teams across the North and East Route.

Construction is due to begin next month, with completion scheduled for 2027, positioning the Sheffield MDU as a national blueprint for low-carbon railway infrastructure.