The Iowa Utilities Board has again rejected a key proposal from a company that wants to build a $2 billion transmission line to ship Iowa wind energy to customers in Illinois, The Associated Press and The Des Moines Register reported. The board voted 3-0 on Monday to reject Clean Line Energy Partners’ third request to split the case into separate hearings. The board stood by its plan to decide whether to approve the line and whether to grant the use of eminent domain in one hearing. The company has said that will mean it will have to buy land while running the risk that the proposal could be rejected as not in the public interest. The board said it still remained concerned that landowners would bear additional costs for lawyers with two hearings.