In Cambodia’s hot and humid tropical climate, keeping buildings cool often means relying on energy-intensive systems, drive up costs, emissions, and environmental impacts. But what if we could be reimagined cooling by harnessing nature, advanced materials and optimized design to create naturally cooler spaces? The newly released Compendium for Passive Cooling Strategies in Cambodia provides a comprehensive guide for transforming this vision into reality. Designed for architects, urban planners, and building professionals, it outlines practical solutions for embracing sustainable, climate-smart construction.

The Compendium highlights how passive cooling strategies can significantly reduce energy demand, while enhancing comfort and resilience in both urban and rural environments. Its recommendations are grouped into three key approaches, tailored specifically to the country’s climatic conditions.

  • Site-oriented strategies
    Incorporating tree canopies, green corridors, and other landscaping techniques, these strategies can reduce temperatures, combat the urban heat island effect, and provide essential shading.

  • Design-focused solutions
    Techniques including stack ventilation and night cooling systems leverage airflow dynamics to naturally regulate indoor temperatures, reducing mechanical reliance.

  • Material-based approaches
    Options like insulated walls and reflective roofs offer effective ways to minimize heat absorption and improve overall energy efficiency.

By combining these strategies, buildings can reduce cooling demand by 30% to 50%, yielding substantial energy savings, cutting greenhouse gas emissions, and improving occupant comfort.

Beyond theory, the Compendium features inspiring case studies from around the world, showcasing real-world applications of these strategies. Examples include reflective pavements in Tokyo, which mitigate extreme heat, and night cooling systems in India that take advantage of cooler nighttime temperatures to enhance energy efficiency.

Each chapter of the Compendium offers technical guidelines and delivers actionable insights, user-friendly technical descriptions, and practical steps for integrating passive cooling techniques into building projects. It also emphasizes the importance of tailoring solutions to specific contexts, ensuring that buildings meet local needs while addressing broader challenges like climate change and rapid urbanization.

As Cambodia faces the dual challenges of global warming and urban growth, the Compendium for Passive Cooling serves as both a roadmap and a call to action. It illustrates how passive cooling can become a cornerstone in the creation of resilient, sustainable communities. By adopting these strategies, Cambodia has the potential to set a regional example, demonstrating the immense benefits of energy-efficient design and solutions that work harmoniously with nature to prioritize both people and the planet.

The Compendium for Passive Cooling Strategies in Cambodia is developed by the Ministry of Environment of the Royal Government of Cambodia with technical support from the United Nations Economic and Social Commission for Asia and the Pacific, and the United Nations Environment Programme within the framework of the Cool Coalition. The Compendium is developed under the project Passive Cooling Strategies for Sustainable Development in Cambodia with funding support from the ClimateWorks Foundation.