What is Retrofit?
Upgrading existing buildings with energy efficiency improvements such as insulation, double glazing, and efficient heating systems. Retrofitting reduces operational carbon and can be more sustainable than demolition.
Why it matters
With 80% of 2050's buildings already built, retrofit is essential for meeting national carbon targets. Government incentives and tightening EPC requirements make retrofit increasingly financially attractive for building owners and occupiers.
Example
A charity retrofits its Victorian headquarters with cavity wall insulation, LED lighting, and an air-source heat pump. Annual gas consumption drops from 120,000 kWh to near zero, cutting Scope 1 emissions by 22 tCO₂e.
Related terms
Energy Efficiency
Using less energy to perform the same task or produce the same output. Energy efficiency improvements reduce both costs and carbon emissions, often providing quick payback periods.
Operational Carbon
Carbon emissions from the energy used to operate a building, including heating, cooling, lighting, and appliances. Operational carbon can be reduced through energy efficiency and renewable energy.
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