Missouri regulators have rejected controversial plans for a high-voltage power line through the state.
In a 3 to 2 vote, the Public Service Commission said Clean Line Energy Partners of Houston did not adequately show that Missouri or landowners would benefit from the Grain Belt Express project.
Clean Line said it will try and clarify issues surrounding the project and vowed to continue the battle for approval.
Clean Line proposes using wind generators in Kansas to produce electricity and transmit it along a 750-mile route to Indiana and on to the East Coast.
Randolph, Monroe and Ralls counties in Northeast Missouri and Pike and Scott counties in West-Central Illinois are located on the route.
Clean Line had touted the economic and environmental impact of the project, but opponents were concerned about land values and the use of eminent domain.
Illinois regulators have yet to vote on the project.