Journal of Building and Construction Engineering ISSN: 3107-8796 (Online)

Authors: Kunta Srikanth, K. Chaitra

Abstract: The built environment is a significant contributor to global greenhouse gas emissions, accounting for nearly 40% of total emissions. As the world transitions towards a low-carbon future, sustainable building retrofitting has emerged as a crucial strategy for reducing energy consumption and environmental impact. This research explores the energy-efficient measures that can be implemented in building retrofitting, with a focus on existing buildings, which account for the majority of the built environment. The study examines various energy-efficient measures, including lighting retrofits, HVAC upgrades, building envelope improvements, and renewable energy systems. The effectiveness of these measures in reducing energy consumption and emissions is evaluated through a comprehensive review of existing literature and case studies. The research also investigates the impact of these measures on indoor comfort and productivity, as well as their economic feasibility and potential for scalability. The findings highlight the significant potential of sustainable building retrofitting in reducing energy consumption and emissions. Lighting retrofits, for example, can reduce energy consumption by up to 80%, while HVAC upgrades can reduce energy consumption by up to 50%. Building envelope improvements can also significantly reduce energy consumption, while renewable energy systems can reduce dependence on fossil fuels.

The research also identifies barriers to the adoption of sustainable building retrofitting, including high upfront costs, lack of awareness and expertise, and limited access to financing. However, the study also highlights opportunities for overcoming these barriers, such as through policy incentives, education and training programs, and innovative financing mechanisms.

 The conclusions of this research emphasize the importance of sustainable building retrofitting in achieving a low-carbon future. The study recommends that building owners, policymakers, and industry stakeholders prioritize sustainable building retrofitting, and provides guidance on the most effective energy-efficient measures to implement. The research also highlights the need for further research and development in sustainable building retrofitting, particularly in the areas of cost-effective solutions and scalable implementation strategies.

Keywords: Sustainable retrofitting, Energy efficiency, Green building, Building upgrade, Renovation, Energy conservation, Water conservation, Indoor air quality, Material selection, Renewable energy.