Smart and Sustainable Building Systems: Integrating Renewable Energy and MEP Technologies for Energy-Efficient Built Environments
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Abstract
The increasing energy demand of buildings, rapid urbanization, climate-related pressures, and growing requirements for occupant comfort have intensified the need for building systems that integrate energy efficiency, renewable energy, mechanical, electrical, and plumbing (MEP) technologies, and intelligent control. Conventional building services are frequently designed as relatively independent subsystems, which can limit opportunities for coordinated energy management and reduce the effectiveness of renewable energy integration. This study develops an integrated analytical framework for smart and sustainable building systems by synthesizing research on smart buildings, renewable-energy technologies, hybrid energy systems, building automation, artificial intelligence, energy storage, and multi-energy building design. The methodology consists of a structured thematic synthesis of the supplied literature followed by a systems-level analysis of the interactions among building envelope and loads, renewable generation, MEP systems, storage, sensing, automation, and occupant-oriented control. The analysis identifies five central integration requirements: demand reduction, distributed renewable generation, flexible MEP operation, intelligent energy management, and storage-enabled coordination. The findings indicate that renewable generation alone does not constitute a smart or sustainable building; performance depends on the ability of building systems to coordinate generation, demand, thermal services, electrical services, and occupant requirements. Solar photovoltaic systems, hybrid renewable configurations, energy storage, smart HVAC operation, advanced building automation, and data-driven control can collectively improve system flexibility, but their benefits are constrained by site conditions, capital cost, interoperability, user preferences, and implementation barriers. The study proposes an integrated building-energy architecture in which MEP systems operate as active components of an intelligent energy ecosystem rather than as isolated technical services. The resulting framework provides a theoretical and practical basis for designing energy-efficient buildings capable of responding dynamically to renewable availability, occupancy, environmental conditions, and energy demand.
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