Blog — February 2026
Green Buildings. Performance, Not Just Certification.
By Keith Elliott, Architecture Lead & Ivano Iannelli, Sustainability Lead
Green building certifications have become standard. But certification is not performance. A building can achieve LEED Platinum and still consume more energy than a conventional building.
The Performance Gap
Research shows green buildings often underperform predictions by 20-50%. Design assumptions, construction quality, operational practices, and occupant behaviour all contribute.
The EIG Approach
EIG helps organisations design and operate buildings that deliver real performance. Our net-zero building standards initiative demonstrates what is possible when sustainability ambition meets architectural excellence.