A state mandate that independent energy suppliers stop selling natural gas or electricity to some customers unless they meet special conditions has been struck down by a state judge as arbitrary and capricious.

A state Public Service Commission (PSC) rule gave the independent marketers 10 days to stop selling to residential or small commercial customers, unless they could guarantee the energy would be cheaper than what customers would pay to full-service utilities, or that at least 30 percent of the power would come from renewable sources.