OGE Energy seeks approval for environmental compliance plan After unsuccessfully challenging the EPA all the way to the U.S. Supreme Court and exhausting its legal options, Oklahoma Gas & Electric filed an application with the Oklahoma Corporation Commission seeking approval of a plan to be in compliance with federal environmental mandates and to modernize the company's Mustang Power Plant. OG&E's filing calls for adding two pollution control devices known as scrubbers to the coal-fired units at the Sooner Power Plant near Red Rock, converting two coal-fired units at the Muskogee Power Plant to natural gas and modernizing the natural gas units at the Mustang Power Plant. The deadline for OG&E to achieve environmental compliance is January 2019. The company has until that time to fully implement its plan or face enforcement actions. OG&E is seeking approval to recover the costs associated with its compliance and Mustang modernization efforts. These capital costs are estimated to be approximately $1.1B over a six year period.