The Facts

  • In modeling impacts of CSAPR, EPA assumed the state’s 10,000 MW of installed wind capacity would translate to 10,000 MW of actual electric generation. By contrast, ERCOT derates wind to 8.7% of capacity, because Texas wind is weak during summer’s peak demand.
  • In 2009 and 2010, the Houston region attained the federal standard of 85 ppb, though the intense summer heat in 2011 pushed the city slightly back over the attainment level. The Dallas-Fort Worth area reduced ozone levels from 96 ppb in 2006 to 86 ppb in 2009, a remarkable improvement.



  • Texas must continue to exercise its state authority-as recognized in the CAA-and challenge EPA actions when they exceed federal laws’ authority and impede effective and efficient state action.