After receiving more than 80,000 comments on a draft version of the December 2010 plan, the Department of Interior announced October 27 that it would revise back the number and acreage of planned Solar Energy Zones. The revisions, laid out in the Supplement to the Solar Energy Development Draft Programmatic Environmental Impact Statement, would reduce the number of zones from 24 to 17 and the total acreage available for development from 677,000 acres to about 285,000 acres. The plan is subject to a 90 day comment period, and the agency will release a final version in 2012.