Green architecture and energy efficiency are critical considerations in contemporary construction practices, driven by global concerns over environmental degradation and energy consumption. This paper provides a comprehensive review of innovative design and construction techniques in green architecture aimed at enhancing energy efficiency. The study explores sustainable design principles, emphasizing the importance of minimizing the ecological footprint of buildings. Strategies such as passive design, green roofs, and efficient insulation systems are examined to create structures that utilize natural resources effectively. These techniques reduce energy consumption and contribute to a healthier indoor environment. Innovative construction materials, including recycled and locally sourced materials, play a vital role in green architecture. Emerging technologies like bio-concrete and self-healing materials enhance structural resilience and embody eco-friendly attributes. Advanced building systems, such as smart grids and energy-efficient HVAC systems, are discussed for optimizing energy performance throughout a building's lifecycle. The paper highlights the significance of renewable energy sources, including solar panels and wind turbines, in architectural designs. These technologies promote energy self-sufficiency and reduce greenhouse gas emissions. The review underscores the symbiotic relationship between green architecture and energy efficiency, aiming to inform and inspire future practices in the construction industry. Passive design principles, such as passive solar design, natural ventilation, and thermal mass, are crucial for energy efficiency. These strategies leverage natural elements to create comfortable and energy-efficient spaces. Sustainable materials and construction methods, including the use of recycled materials and locally sourced resources, contribute to a more sustainable material palette. Modular construction and prefabrication streamline processes, enhance resource efficiency, and support eco-friendly practices. Advanced technologies like smart grids and building automation systems optimize energy usage and integrate renewable energy sources. Bio-concrete and self-healing materials enhance the durability and resilience of structures. Renewable energy integration, such as solar panels and wind turbines, reduces carbon emissions and promotes energy independence. Real-world case studies, including Bosco Verticale, The Edge, and One Central Park, demonstrate the feasibility and benefits of green architecture. Future trends in green architecture include biophilic design, net-zero buildings, and digital twin technology. Challenges such as financial barriers, regulatory frameworks, public awareness, and technological integration must be addressed to ensure the widespread adoption of sustainable practices. Recommendations include promoting green architecture through policy frameworks, fostering education and training, and encouraging public awareness campaigns. The integration of innovative techniques is essential for creating a sustainable and resilient built environment.Green architecture and energy efficiency are critical considerations in contemporary construction practices, driven by global concerns over environmental degradation and energy consumption. This paper provides a comprehensive review of innovative design and construction techniques in green architecture aimed at enhancing energy efficiency. The study explores sustainable design principles, emphasizing the importance of minimizing the ecological footprint of buildings. Strategies such as passive design, green roofs, and efficient insulation systems are examined to create structures that utilize natural resources effectively. These techniques reduce energy consumption and contribute to a healthier indoor environment. Innovative construction materials, including recycled and locally sourced materials, play a vital role in green architecture. Emerging technologies like bio-concrete and self-healing materials enhance structural resilience and embody eco-friendly attributes. Advanced building systems, such as smart grids and energy-efficient HVAC systems, are discussed for optimizing energy performance throughout a building's lifecycle. The paper highlights the significance of renewable energy sources, including solar panels and wind turbines, in architectural designs. These technologies promote energy self-sufficiency and reduce greenhouse gas emissions. The review underscores the symbiotic relationship between green architecture and energy efficiency, aiming to inform and inspire future practices in the construction industry. Passive design principles, such as passive solar design, natural ventilation, and thermal mass, are crucial for energy efficiency. These strategies leverage natural elements to create comfortable and energy-efficient spaces. Sustainable materials and construction methods, including the use of recycled materials and locally sourced resources, contribute to a more sustainable material palette. Modular construction and prefabrication streamline processes, enhance resource efficiency, and support eco-friendly practices. Advanced technologies like smart grids and building automation systems optimize energy usage and integrate renewable energy sources. Bio-concrete and self-healing materials enhance the durability and resilience of structures. Renewable energy integration, such as solar panels and wind turbines, reduces carbon emissions and promotes energy independence. Real-world case studies, including Bosco Verticale, The Edge, and One Central Park, demonstrate the feasibility and benefits of green architecture. Future trends in green architecture include biophilic design, net-zero buildings, and digital twin technology. Challenges such as financial barriers, regulatory frameworks, public awareness, and technological integration must be addressed to ensure the widespread adoption of sustainable practices. Recommendations include promoting green architecture through policy frameworks, fostering education and training, and encouraging public awareness campaigns. The integration of innovative techniques is essential for creating a sustainable and resilient built environment.