Wasted Hot Air Points to Cool Opportunity Worth $70 Billion
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The summertime blast of hot exhaust from air conditioners onto city streets from Soho to Singapore is a global energy efficiency investment opportunity Engie SA sees hitting $70 billion next decade.
Massive district cooling projects, which use chilled water from underground facilities to provide cold air to entire city blocks, may be the way forward as governments increasingly want developers to phase out individual AC units, according to Didier Holleaux, the French company’s executive vice president. Penthouses or solar panels could also replace air-conditioners that take up space on the roofs of office buildings, he said.