Mayor Terry J. Renner explains how the City of Galena, Ill., is about to install a 368kw solar field array just north of its wastewater treatment plant. The 1,443 panels will provide about half of the plant's electrical needs for at least the next 40 years, saving the city about $55,000 and 920,000 lbs of greenhouse gas emissions per year. The $1.2 million project will be partially paid for with a $900,000 Illinois Clean Energy Grant.