Germany has already experienced a 10% increase in the cost of electricity. The costs will sky rocket if they close all their nuclear plants, as the country will go from being an exporter of electricity to being an importer. In addition to the increased number of coal fired plants within Germany, some of the imported energy will come from coal fired plants outside of German borders. Further, the intermittent nature of wind power requires wildly expensive backup power plants being built to fill in the gaps during periods of light wind, making significant increases in wind energy a form of economic suicide for Germany's energy intensive manufacturers.
Thus, the anti-nuke Greens in Germany are leading to increased soot and CO2 emissions due to forcing the country's utilities to burn more coal.