“By ignoring the acknowledged societal and other benefits of customer-sited renewable generation and assigning value solely to limited economic benefits, did the Commission fail to proceed in the manner required by section 2827.1(b)(3), which mandates that a net energy metering tariff must be ‘based on the costs and benefits of the renewable electrical generation facility?’
Essentially, the lawsuit is aiming to keep the spirit of the technique used to value rooftop solar, some sort of math based equation, but to change the input variables. For instance, it used to be that daytime electricity was the most expensive part of the day – solar ended that. In New England, it is estimated that rooftop solar installations save all electricity users billions via lower wholesale pricing.