The wastewater-energy nexus in Akron - link. From the story:
"Due to the expansion of an anaerobic digestion facility at a wastewater treatment plant in Akron, Ohio, domestic sewage will generate roughly 12,192 megawatt hours (mwh) of electricity in 2014 -- enough green energy to provide electricity to 1,600 homes.
KB BioEnergy, owner of the anaerobic digestion plant, invested $32 million last year to expand their existing composting operation in order to more effectively extract the renewable energy stored in human biosolids. Likewise, a private-public partnership (PPP) between the city of Akron and KB BioEnergy helped make the expansion of this renewable energy facility possible."