On October 28, 2008, the Ohio Power Siting Board adopted rules implementing certification requirements for wind generating facilities in the state.  The full text of the opinion and order approving the rules identifies the procedural background followed by the PSB and highlights comments received from all interested parties (including utilities, citizen groups, and AWEA).  The The rules follow Ohio’s passage in May 2008 of an RPS which requires that utilities provide 25% of their retail electricity supply from alternative energy resources by 2025, at least half of which must be generated by renewable resources such as wind.