There has been a lot of interest in understanding the details of the recently signed into law HB 6202 Solar Ramp Up.  These resources should provide clarification:

DSIRE - IL Renewable Portfolio Standard

YEAR	RPS requirement	Solar Requirement (as % of RPS)	Solar Requirement (as % of total power supply)	Estimated Annual New Solar MW (DC)
2012-2013	7%	0.5%	0.04%	40
2013-2014	8%	1.5%	0.12%	99
2014-2015	9%	3.0%	0.27%	178
2015-2016	10%	6.0%	0.60%	397

Created by Vote Solar