SPRINGFIELD, Ill. (AP) — State regulators have refused to reconsider their approval of a high-voltage electricity transmission line that would cross parts of nine central Illinois counties. A group of farmers and landowners challenged the Illinois Commerce Commission’s approval of the 780-mile line known as the Grain Belt Express. They argued Texas-based Clean Line Energy Partners didn’t meet state requirements for an expedited review. The (Springfield) State Journal-Register reports the commission rejected the appeal Tuesday. Clean Line Energy Partners calls the decision a boost to renewable energy. Pike and Scott County Farm Bureau Director Blake Roderick says opponents will likely challenge the decision. The line would stretch from Kansas to Indiana and provide wind power. The Grain Belt Express has won approval in Kansas and Indiana. Missouri regulators have blocked the effort.