Beneath the streets of hundreds of North America's oldest cities lies a network of pipes delivering steam heat to office buildings and hospitals. These steam loops could be a clean energy solution.

Project Orange runs this cogeneration steam plant, which uses natural gas to generate electricity, then uses the excess heat given off when electricity is made to create steam. Project Orange's ...

The history of providing steam power to downtown for 100-plus years is a source of pride for the We Energies employees who work on the steam system, said Ted Sniegowski, manager of District Energy ...

A failing steam factory that has provided heat for more than a century to buildings in Downtown Pittsburgh is “beyond repair,” but plans are afoot for a national energy company to replace it ...

A century-old steam pipe network provides heating for over 200 large buildings in Boston and Cambridge. Greening the steam generation could help building owners lower their carbon footprint, since ...