SE Iowa city considers solar at sewer plant
The Fort Madison Daily Democrat reports the Donnellson City Council is interested in solar as a way to reduce the city wastewater plant's energy costs, which have running about $5,000 a month.
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#1 Mar 8, 2014
The article didn't get into detail of how the 17 year payoff was calculated, current prices or future prices. That 17 years may be closer to 10 to 12 years and depending on what future expansion of the plant will entail, it may pay off sooner than that. There has also been a move by some community treatment plants to go from aerobic to anaerobic treatment. The anaerobic makes hydrogen and methane gas that can be scrubbed and used to add heat to the process to decrease costs or can be burned in generators to supplement the plant's energy needs during peak electricity usage.
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