The Ninth Circuit held that EPA did not act arbitrarily and capriciously when it disapproved in part Arizona's regional haze SIP and issued a replacement federal implementation plan (FIP) in place of the disapproved SIP elements. First, EPA did not act arbitrarily and capriciously when it disapprove...

The U.S. Supreme Court upheld FERC's "demand-response" rule under which operators of wholesale electricity markets, in specified circumstances, must pay the same price to providers for conserving energy as to generators for producing it. During peak periods, electricity rates increase dramatically, ...