Image from freepik.com


can export power back to the grid or support energy sharing within communities, helping to decarbonise local energy systems.


In offsite factories, renewable technologies can be tested, pre-commissioned, and integrated with smart control systems as standard. This ensures that the technology works seamlessly from day one, offering occupiers a plug-and-play energy solution with minimal maintenance requirements.


Moreover, with smart metering and IoT connectivity, offsite-built properties can offer real- time energy performance data, helping occupants understand and adjust their usage. These data insights can also feed back into the design and manufacturing process, enabling continuous improvement and learning.


Retrofitting and repeatability


Another area where offsite construction can support national energy efficiency targets is in retrofit. With millions of existing homes in the UK performing poorly in terms of energy use, improving the energy efficiency of the current housing stock is a pressing priority.


Here, offsite methods can provide scalable, cost- effective solutions. Using prefabricated insulated panels, external cladding systems, and pod-like extensions, entire building envelopes can be upgraded with minimal disruption to residents. The Energiesprong model — pioneered in the Netherlands and gaining traction in the UK — is a prime example of this approach in action.


In the social housing sector, offsite retrofit solutions can help providers meet the Decent Homes Standard, reduce tenant energy bills,


and improve wellbeing — all while achieving the energy performance necessary to support net zero ambitions.


Furthermore, because offsite processes can be repeated with high levels of consistency, large- scale retrofitting programmes become more viable, helping local authorities and housing associations address backlogs and meet compliance deadlines.


A strategic opportunity


For developers, housing associations, local authorities, and policymakers alike, offsite construction presents a strategic opportunity to lock in energy efficiency from the ground up. With building regulations tightening and public scrutiny around environmental performance increasing, investing in energy-smart construction methods makes both environmental and economic sense.


And it’s not just about compliance. Energy- efficient buildings tend to have better market value, lower running costs, and happier, healthier occupants. In a post-pandemic world where indoor air quality, natural light, and thermal comfort have taken on new importance, offsite construction can deliver homes and workplaces that people genuinely want to live and work in.


Policy, procurement, and progress


To fully realise the energy-saving potential of offsite construction, supportive policy frameworks and forward-thinking procurement strategies are essential. This includes incorporating whole-life carbon assessments in planning and funding criteria, incentivising the use of low-carbon materials, and providing clear guidance for energy performance in public sector construction.


Government bodies, especially those delivering new hospitals, schools, and housing, should lead by example by specifying offsite and MMC solutions in their projects. By doing so, they can stimulate demand, drive innovation, and encourage the wider supply chain to invest in energy-efficient manufacturing processes.


Education and skills development will also be crucial. The transition to energy-efficient offsite construction will require a workforce proficient not only in assembly but in data-driven design, digital modelling, and renewable systems integration. Collaborative efforts between industry, academia, and training providers can help build this future- ready workforce.


In summary


The shiſt to net zero requires bold, transformative action across every part of the built environment. Offsite construction is not merely a technical solution — it represents a systemic change in how we design, deliver, and operate buildings.


Energy efficiency is no longer a nice-to-have; it is a critical metric of building performance. Through precision engineering, integrated technologies, and a whole-life approach, offsite methods offer the most robust route to delivering buildings that meet today’s energy challenges — and tomorrow’s expectations.


As we power up the future of construction, it’s clear that the factory floor holds the key to some of the industry’s most pressing energy and carbon challenges. Now is the time to unlock its full potential.


Spring 2025 M35 17


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