![Sewage to Energy](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fmixed_liquor_channel.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=7a68c0f3ce579c223032cc6620268a40)
The City of Philadelphia is using new geothermal technology to harness energy from wastewater to meet energy conservation objectives and save a projected $15,000 annually.
Mayor Michael Nutter launched the Greenworks Philadelphia initiative in 2008, aimed at making his...