
Cities Unleash Secret Underground Weapon to Become Clean Energy Powerhouses
Companies are tapping into cities’ underground networks of steam pipes as a source of clean energy. “Green steam,” as it’s called, “recaptures and reuses thermal energy previously lost to the environment, utilizing advanced cogeneration technology,” according to Paris-based Veolia, which operates a dozen of these networks in North American cities including Boston, Philadelphia, Baltimore and Montreal. […]