As the world gathers for COP 24, the U.N. climate summit, it must contemplate the fact that as development and urbanization increase, the heat island effect will worsen. This is a phenomenon where the density of buildings, industrial activity, roads and traffic in a city trap heat and raise temperatures above those of the surrounding areas. This heating up will, naturally, require even more cooling units. The International Energy Agency recently predicted that the stock of air-conditioning units would triple by 2050, growing from 1.6 billion to 5.6 billion by 2050. This would require as much electrical capacity to power as the United States, the European Union and Japan currently use, combined.
Source: The Washington Post