Large Scale Low Carbon Student Accommodation & Commercial Facilities, Supporting Cambridge University Expansion

Cambridge, United Kingdom

Millers Yard, Pembroke College

As part of Pembroke College’s expansion, Millers Yard was developed to provide low-carbon student accommodation and commercial spaces, ensuring a balance between sustainability and functionality. The project included three student accommodation blocks—two refurbished buildings and one new-build—as well as two commercial shell spaces for future fit-out.

Energy Digest was commissioned to conduct SBEM Calculations and Dynamic Simulation Modelling (DSM), ensuring the development complied with Approved Document L Volume 2 while optimising energy efficiency, carbon reduction, and operational performance.

Project: Millers Yard, Pembroke College
Location: Cambridge, United Kingdom

Service Requirements

Advanced Energy Strategy

To meet stringent compliance and performance standards, a comprehensive energy strategy was implemented:

  • Efficient Heating & Cooling Systems: The primary heating system utilised an air source heat pump (ASHP) linked to an underfloor heating network, optimising thermal efficiency across the development.
  • Low-Carbon Cooling Solutions: Accommodation units featured low-temperature chilled ceiling systems, designed to regulate summer temperatures efficiently without increasing energy loads.
  • High-Performance Building Fabric: Upgrades to insulation, air tightness, and glazing performance resulted in significantly reduced energy use intensity (EUI), lowering operational costs and enhancing overall sustainability.
  • On-Site Renewable Energy: Photovoltaic (PV) panels were installed across all available roof space, optimally oriented to maximise solar generation and reduce dependency on grid electricity.

Challenges Faced

Getting the Building Profile Right

Student accommodation presents unique complexities, given its high occupancy density and intense usage patterns—often surpassing those of standard residential buildings. As with hotels and other large-scale dwellings, these facilities typically have elevated energy and carbon footprints. Consequently, the building services design must handle significant surges in demand during peak periods. Additionally, Cambridge records higher average summer temperatures than many other UK regions, necessitating a well-planned mechanical cooling strategy to ensure occupant comfort throughout the year.

Results & Deliverables

What we successfully delivered

Through meticulous energy modelling and strategic system design, Energy Digest successfully delivered:

  • Full Compliance with Approved Document L Volume 2, ensuring seamless regulatory approval.
  • Substantial Carbon Reduction, with all primary heating, cooling, and hot water services supplied by Low Zero Carbon (LZC) technologies.
  • As-Built BRUKL Reports & EPC Certification, delivered well in advance of building control sign-off, ensuring a smooth approval process.

Energy Digest demonstrated an exceptional level of expertise and professionalism throughout this project. Their in-depth reporting, proactive communication, and collaborative approach ensured all deliverables were completed efficiently and to a high standard.

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