![Targeting Efficiency](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fimg_0008.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=432c0bdd3afd4ae2038f7a846ada9ec1)
Three years ago, an energy audit of the Freeport (Maine) Wastewater Treatment Plant found many ways to save energy by upgrading old equipment, changing processes and insulating the building. Now the Freeport Sewer District is saving more than $90,000 in electricity and $25,000 in...