Mountain West (CO ID MT NV UT WY)

The agency says the remaining 17 sites covering ~285,000 acres in six states have the best solar gain and energy transmission traits, the fewest conflicts with environmental, cultural, and historic resources, and the best compatibility with each state's efforts. Public meetings commence Nov 30 and a 90-day public comment period ends Jan. 27, 2012. A variance process could be used to approve additional solar development elsewhere.

The naturally-occurring erionite causes malignant mesothelioma and evidence suggests it is much more toxic than asbestos. Concern is rising as development that disturbs erionite deposits occurs in 12 western states.

As part of its push to improve the nation's power system, the Obama administration is trying to expedite construction of 7 transmission lines, in various stages of planning and design, spanning 3,100 miles in 12 states.