70% of it is bought from this solar farm that the city invested in in Sangamon County. The power grid isn't segregated so it's as close to true as possible without literally having solar panels plugged into all their outlets. Hopefully we can get to 100% soon www.motherjones.com/environment/...
Chicago's municipal buildings are now powered largely by the sunTo achieve its goals, the city helped finance the largest solar farm east of the Mississippi.www.motherjones.com