Edison Mission Energy, the independent power producer, won bankruptcy court approval of a description of the terms of a reorganization plan that includes an asset sale to NRG Energy Inc., a company lawyer said. U.S. Bankruptcy Judge Jacqueline Cox in Chicago approved the so-called disclosure statement today, Seth Gastwirth, the lawyer for Edison Mission, said in an e-mail. Creditors will now be asked to vote on the plan. The judge's decision couldn't immediately be confirmed from court records.