In a global survey conducted across 12 cities, Tokyo ranks highest in terms of air conditioner usage. Japan's bustling metropolis emerges as the leader due to its prolonged hot and humid season which results in a steady demand for cooling apparatus. The widespread use raises questions around Tokyo's energy consumption and commitment to reducing carbon emissions.

Air conditioning usage in Japan has always been a topic of concern given the country's environmental commitments and energy policy. In recent years, the Japanese government has set strict guidelines on energy usage. However, Tokyo's residents find it increasingly difficult to comply without compromising comfort in extreme temperatures. Energy efficiency and eco-friendly alternatives prevalent in the society are thus critical issues.

In comparison, many cities in the US and EU also struggle with high energy consumption due to air conditioner usage. However, unlike Tokyo, most of these cities experience hot weather for shorter durations. Therefore, the issue is not as pronounced, and most cities are steadily transitioning towards renewable sources for energy generation.