Abstract

The assessment of energy efficiency strategies in mid-rise office buildings in Lagos addresses the pressing need to mitigate energy consumption and greenhouse gas emissions in urban environments. As commercial buildings, including mid-rise offices, continue to expand in Lagos, there's a growing urgency to adopt sustainable practices to curb energy demand. This study focuses on identifying and evaluating energy efficiency strategies in mid-rise office buildings within Lagos, Nigeria, considering factors such as building orientation, envelope design, and renewable energy utilization. Two case studies, Nestoil Tower and Number One Building, were selected using non-random purposive sampling based on specific criteria. The research methodology primarily employed qualitative techniques, including observation and structured interviews. Findings reveal that both buildings implement passive measures and technological integrations to enhance energy efficiency, such as efficient building spatial orientation, effective lighting and ventilation systems, and integration of smart building automation systems. However, disparities exist in the availability and efficiency of certain technologies, highlighting the need for further improvement. Nestoil Tower excels in solar energy integration, while Number One Building demonstrates potential for enhancement in renewable energy utilization. Despite these variations, both buildings prioritize low energy consumption appliances and equipment. Based on these findings, recommendations are proposed to enhance renewable energy integration, improve smart technology integration, and promote a culture of energy efficiency in mid-rise office buildings in Lagos. By implementing these recommendations, stakeholders can contribute to the reduction of energy consumption and greenhouse gas emissions, fostering a sustainable built environment in Lagos and beyond.