Projects

"The Bollo Lane project in Acton, London, is set to significantly benefit from the integration of Passivhaus principles, which will ensure a highly energy-efficient development with exceptional levels of thermal comfort for end users. By adopting the rigorous standards of Passivhaus, the scheme will achieve reduced energy consumption and long-term sustainability, aligning with both environmental and economic objectives.

Our Passivhaus consultant, AES, plays a critical role in the success of this initiative. With their extensive expertise and practical experience, AES is guiding the design and construction teams through the necessary adaptations and enhancements required to meet Passivhaus certification. Their input ensures that the project not only meets regulatory standards but also embraces the most innovative and cost-effective solutions available in the market today. Through their ongoing involvement, AES is helping to future-proof the Bollo Lane development, delivering a model for sustainable urban living in London." 

Massimo Dicoladonato, Technical Manager, Barratt West London

Project Details

This project in the London Borough of Ealing involves the development of five apartment blocks, delivering 455 new homes as part of a wider regeneration initiative in the area. This scheme is a Joint Venture with TFL Places for London, aiming to provide high-quality homes while meeting ambitious sustainability targets.   

The development is required to meet the London Plan requirements with aims to achieve the Passivhaus Certification – a stringent standard that prioritises low energy use and occupant comfort all year round. 

How We Met the Requirements

AES supported the client in re-introducing Passivhaus principles into the design. We started with a comprehensive review of the Stage 3 design to assess compliance with the Passivhaus Standard and identify areas where performance improvements where required.

We also carried out a detailed Part O overheating assessment of the residential units. Based on the findings, we cooperated with the architects and daylight consultants to specify and agree on a window design that balances solar gains, daylight, and ventilation, key to meeting both Passivhaus and planning requirements.

AES collaborated with the architects and daylight consultants to develop a balanced window design, optimising solar gains to minimise Passivhaus space heating requirements while addressing daylighting and overheating considerations.

Ongoing work includes continued coordination with the design team, reviewing thermal bridges and key junctions to ensure reliable thermal performance across the design.

Outcome

AES guided the project to align with the Passivhaus Standard, ensuring it’s on track for future certification. This was achieved without the need for significant redesign or disruption to the project timeline.