Environment Ohio has released a report card grading the progress of Ohio's investor-owned utilities since the enactment in 2008 of Senate Bill 221, the law that established Ohio's renewable portfolio standard. According to the report, Ohio, the nation’s second-leading emitter of greenhouse gases, is now saving enough electricity each year to power 43,000 homes because of S.B. 221, among other benefits. Among the state's investor-owned utilities, Duke Energy scored the best in the report and FirstEnergy scored the worst. The executive summary of the report is available here, and the full report is available here (pdf required).