DNR reports 3% increase in Iowa greenhouse gas emissions


2017 pie chart.png
This pie chart shows 2017 greenhouse emissions in Iowa by sector (from the 2017 Greenhouse Gas Inventory Report). 

Julia Poska | December 28th, 2018

Greenhouse gas emissions in Iowa rose 3 percent from 2016 to 2017, according to a new report from the state Department of Natural Resources.  The report accounted for 131 million metric tons of emissions released throughout the state in various sectors including energy, agriculture and solid waste.

The largest sources of increase were waste and industrial processes. Emissions from waste rose 28.62 percent due to increased decomposition of older waste in landfills. Emissions from industrial processes rose 31.73 percent percent, largely due to increased production of ammonia, up over 180 percent from 2016. The only sector to see decrease was natural gas production and distribution, which decreased about 10 percent and accounts for only 1 percent of total emissions.

Agriculture contributes about 30 percent of the state’s greenhouse gas emissions,  mainly methane and nitrous oxide, which are respectively about 25 and 298 times more potent greenhouse gases than carbon dioxide. These emissions largely come from animal waste and soil management.

Despite this increase, total emissions are down 6 percent from 2008.  The DNR projects that emissions will continue rising through at least 2020, and drop a bit more by 2030.

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