The Land and Environment Court approved the company Svenska Vanadin's application for vanadium mining in Hudiksvall Municipality in September 2022.
Several parties appealed the decision, including the County Administrative Board and private actors.
Now, the Land and Environment Court of Appeal (MÖD) is dismissing the company's application, according to a press release.
In its decision, the MÖD writes that the application does not meet the requirements for an environmental impact assessment.
"Without sufficient documentation, it is not possible to assess whether a permit can be granted or not," says the court's chairman Malin Wik, according to the press release.
She adds that the company can reapply with a better investigation of environmental consequences.
The project has previously been met with strong criticism from residents in the area, who are concerned about, among other things, the drinking water.