The Midwest ISO is working to adapt to the impending transition from coal-fired plants toward more wind power and natural gas plants, said J.T. Smith, the grid operator's manager of policy studies for the transmission asset management group, during a webcast. Aside from imminent coal-fired and nuclear plant retirements, MISO is facing refueling decisions by generators to comply with the Mercury and Air Toxics Standards, which are set to take effect in 2015, Smith said. "All these drivers are pushing for a more balanced production from various energy resources rather than high coal," Smith said.
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