A comparative assessment of green building institutions and their role in advancing net-zero ready buildings

The built environment greatly influences global energy consumption and carbon emissions, highlighting the importance of moving toward buildings that are low-carbon and prepared for net-zero standards as a vital sustainability goal. Certification programs for green buildings, such as Leadership in Energy and Environmental Design (LEED) and the rating system of the Indian Green Building Council (IGBC), have advanced resource efficiency, energy savings, indoor environmental quality, and planning for sustainable sites. Nevertheless, as global climate initiatives increasingly focus on achieving net-zero results, there is a need for these frameworks to be enhanced to tackle lifecycle carbon emissions, incorporate renewable energy, monitor performance after occupancy, and embrace circular economy practices. This paper provides a comprehensive analysis of the LEED and IGBC systems, assessing how they support the development of self-reliant, net-zero-ready structures. It includes a qualitative comparison of certification standards and an operational effectiveness analysis between a LEED-certified office in Noida and a non-LEED office in Delhi. The study evaluates energy efficiency through Energy Use Intensity (EUI) and occupancy-normalized electricity consumption, considering key factors such as building age, HVAC setup, occupant density, operating hours, and building exterior features to better interpret the results. The findings demonstrate that the LEED-certified building had lower energy and carbon intensities under the observed conditions, with approximately a 31.7% reduction in EUI compared to the non-LEED office. Electricity use per occupant was also lower in the LEED-certified building, reflecting more efficient operations with respect to occupancy. These improvements are linked to design features aligned with LEED standards, including improved envelope performance, enhanced thermal efficiency, optimized building systems, and energy-efficient technologies. However, it is important to note that neither building is a net-zero structure; the study focuses on relative operational performance, while net-zero remains an aspirational goal that certification can support. Therefore, these results should not be viewed as a direct cause-and-effect relationship solely attributable to certification, as the specific characteristics of each building and operational context also influence the outcomes. The research finds that LEED and IGBC offer key supportive structures for sustainable building design, yet their future success relies on better integration of energy goals based on results, needs for renewable energy, accounting for carbon over a building’s life, monitoring performance through digital means, and strategies for circular materials. Improving these aspects can amplify the impact of green building certification systems in promoting sustainable, climate-adaptive, and net-zero-prepared construction environments.