Sustainable by Design: Engineering for Net-Zero Architecture

Sustainability is no longer a buzzword; it’s a defining principle in modern architecture and engineering.

As the built environment contributes significantly to global carbon emissions, the journey to net-zero buildings has become both a challenge and an opportunity.  Architects, engineers, and clients are uniquely positioned to address this together, creating designs that are not only functional but also environmentally responsible.

Through projects such as NI’s first Passivhaus Student Accommodation for Queen’s University or the highly sustainable CAFRE Greenmount Campus Redevelopment, we have seen how collaboration -between architects, engineers, and clients – can establish new benchmarks for sustainable construction. By combining vision, technical expertise and forward-thinking, we can ensure that sustainability is not just an outcome but a driving force behind the design process.

Collaboration – The Key to Sustainability

The most sustainable buildings are born out of collaboration.  Architects often lead with visionary designs that prioritise sustainability, but achieving net-zero outcomes requires technical precision.  Engineers bring this expertise, and clients provide the vision and support to enable bold sustainability targets.

When all parties work together from the outset, opportunities to integrate sustainable features seamlessly into the design can be identified.  Early discussions allow us to explore options such as energy-efficient building fabrics, optimised layouts for natural light and ventilation, and the integration of renewable energy systems.

By making sustainability a priority from the beginning, we avoid costly retrofits and unlock innovative solutions that enhance both the performance and aesthetic of the building.  Collaboration also fosters a shared sense of ownership, ensuring that the final design reflects the collective aspirations of the entire team.

Reducing Energy Demand – The Foundation of Net-Zero

Reducing energy demand is the cornerstone of any net-zero design.  Passive design strategies, which focus on optimising a building’s structure and orientation, play a critical role in achieving this goal.

With careful planning, we can incorporate features such as high-performance glazing, thermal insulation, and airtight construction to minimise heat loss in winter and reduce overheating in summer.  Advanced modelling techniques allow us to predict and address energy demands early in the design phase, ensuring that buildings perform efficiently throughout their lifecycle.

Clients who embrace these strategies enable us to create spaces that not only reduce operational costs but also provide a comfortable and stable environment for occupants.  These energy-saving measures form the foundation upon which active systems, such as mechanical ventilation and heating, can operate more effectively.

Integrating Renewables for a Cleaner Future

Passive strategies must be complemented by renewable energy systems to achieve net-zero goals.  By incorporating technologies such as photovoltaic panels, heat pumps and battery storage solutions, we can align energy production with sustainable principles.

The integration of renewables not only offsets operational emissions but also provides resilience against fluctuating energy prices and grid dependency.  Clients who prioritise these investments often see long-term financial and environmental benefits, positioning their projects as benchmarks for others to follow.

Sustainable by Design: Engineering for Net-Zero Architecture Bennett Freehill

Designing for Longevity and Adaptability

Sustainability is not solely about meeting today’s standards – it is about preparing for the future. By embedding infrastructure for emerging technologies and ensuring adaptability, we can create buildings that remain relevant for decades to come.

This might include planning for electric vehicle charging points, modular plant rooms for ease of upgrade, or incorporating flexible spaces that can adapt to changing needs. Futureproofing also involves designing systems that are scalable, allowing for expansion or integration with new technologies as they become available.

Clients who prioritise futureproofing enable designs that accommodate growth, technological advancements, and evolving sustainability criteria, ensuring their investments are resilient and forward-looking.  This approach ensures that buildings continue to deliver value and performance, long after they are first occupied.

Creating Human-Centric Spaces

True sustainability extends beyond energy efficiency; it encompasses the well-being of the people who use the spaces we design.

Air quality, natural lighting and water conservation are just a few of the factors that contribute to creating spaces that are not only functional but also uplifting and supportive.  Mechanical ventilation systems with heat recovery, for example, ensure that fresh air is consistently delivered while maintaining energy efficiency.  Similarly, intelligent lighting systems enhance the mood and productivity of occupants, responding dynamically to natural light levels and user needs.

Energy in Building Design

Sustainability is a shared responsibility, with clients playing a pivotal role in its success. By fostering collaboration and aligning priorities, architects, engineers, and clients can create buildings that not only address today’s challenges but contribute to a more sustainable future.

At Bennett Freehill, we are committed to delivering innovative and practical engineering solutions that align with the sustainability aspirations of our clients. By combining technical expertise with a collaborative approach, we help create buildings that are resilient, efficient and designed to meet the challenges of the future.

This bulletin has been prepared by Simon Sloan, Associate Director, Bennett Freehill. To explore how we can support your next project, get in touch with Simon T: 028 9076 0050, E: s.sloan@bennettfreehill.com.

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Paul O'Neill

MIET CEng MEng

Paul joined Bennett Freehill in late-2021 as part of the organisations drive towards technical excellence, an employee-focused culture, strategic growth and NZEB focus. 

A Chartered Engineer with 14 years’ experience in the construction and electrical industries, Paul has particular specialisms in electrical engineering, conservation, power generation and vertical transportation having worked on projects in the education, healthcare, hotels and office sectors. 

As electrical engineering design lead, Paul is responsible for technical delivery and project responsibility related to electrical engineering, and more critically, directing technical, quality and standards within the engineering teams.

Paul brings his passion for technical quality, buildability, progressivity and efficiency to the Bennett Freehill team.

Aaron McCarthy

MCIBSE CEng BEng

Aaron is a Chartered Engineer who specialises in sustainability and low carbon design, with detailed knowledge of passive design techniques and thermal modelling procedures.

Aaron joined Bennett Freehill in mid-2021, having previously gained 10 years’ experience as an Energy and Building Services design engineer within leading multi-national building services practices. Aaron brings extensive experience in managing and delivering large scale multi-disciplinary projects and has a wealth of experience in MEP Project Management.

Aaron is responsible for client liaison, technical delivery and management of design teams to ensure we meet our clients aspirations.

Aaron brings his passion and drive for successful project delivery through collaboration with clients and design teams.

In May 2022 Aaron was appointed as Partner.

Cormac Freehill

MCIBSE MIET CEng MSc BEng

A Chartered Building Services Engineer with over 15 years’ experience working with some of the UK’s foremost engineering companies, Cormac has been pivotal to the successful award and delivery of multi-million pound projects since being appointed to the role of Managing Director in June 2020 and rebranding the business as Bennett Freehill.

Cormac brings a new vision, new energy and fresh leadership to the team and is responsible for the strategic growth and development of the business, through supporting and undertaking marketing activities, and the training and development of our technically accomplished staff.  In the role of design team leader and client liaison Cormac ensures that the team delivers pioneering, pragmatic MEP design excellence for our clients. 

Cormac specialises in Passivhaus and Nearly Zero-Energy Building (NZEB) construction and is passionate about, and professionally skilled in, Renewable Energy Systems, Energy, Procurement, Design Management and Consulting Engineering.

Cormac Freehill

MCIBSE MIET CEng MSc BEng

A Chartered Building Services Engineer with over 15 years’ experience working with some of the UK’s foremost engineering companies, Cormac has been pivotal to the successful award and delivery of multi-million pound projects since being appointed to the role of Managing Director in June 2020 and rebranding the business as Bennett Freehill.

Cormac brings a new vision, new energy and fresh leadership to the team and is responsible for the strategic growth and development of the business, through supporting and undertaking marketing activities, and the training and development of our technically accomplished staff.  In the role of design team leader and client liaison Cormac ensures that the team delivers pioneering, pragmatic MEP design excellence for our clients. 

Cormac specialises in Passivhaus and Nearly Zero-Energy Building (NZEB) construction and is passionate about, and professionally skilled in, Renewable Energy Systems, Energy, Procurement, Design Management and Consulting Engineering.