Modern buildings in Kenya and beyond are increasingly adopting sustainable design principles to stay cool without relying heavily on air conditioning. Architects are leveraging ancient techniques combined with modern technology to create comfortable indoor environments naturally, reducing energy consumption significantly.

• The primary source of unwanted heat in buildings is solar radiation, particularly through windows and roofs.
• Key strategies include sun shading devices like overhangs and louvres, as exemplified by the University of Nairobi's Upper Kabete library.
• Building orientation, especially in East Africa, focuses on reducing exposure to intense low-angle sun.
• Natural ventilation, utilizing cross-ventilation and high ceilings, allows cooler air to enter and warmer air to escape.
• Materials like thick walls of stone or earth, and reflective roofing, help regulate indoor temperatures.
• Britam Towers in Nairobi, the city's tallest building, incorporates advanced cooling strategies.