The Tenth Circuit vacated EPA orders that granted extensions of exemptions under the CAA's renewable fuels program for three small refineries. Industry groups challenged the orders, arguing that EPA failed to honor the statutory requirement of an "extension" by confusing an extension of an exemption...

The Washington Supreme Court invalidated a rule promulgated by the state's Department of Ecology authorizing regulation via emission standards of businesses that do not directly emit greenhouse gases (GHGs), but whose products do. Industry groups and utility companies argued the Department lacked au...

The Pennsylvania Supreme Court vacated a lower court ruling that found an energy developer trespassed on neighboring landowners' property by extracting natural gas from their property by way of hydraulic fracturing without permission. The developer argued that the extraction did not amount to trespa...