Continued strong customer growth leads to increases in electricity consumption. Without actions to reduce air emissions, this increase would lead to corresponding increases in air emissions.
Reduction in emissions have been accomplished through the installation of scrubber systems on Big Bend Units One and Two and the repowering of Gannon Power Station to the H. L. Culbreath Bayside Power Station.
The following graphs show our emission trends from 1998 through 2010, with actual emissions data used for 1998-2006 and projected emissions data used for 2007-2010. Significant emissions reduction projects completed between 1998-2006 include commercial operation of Big Bend Unit 1 and Unit 2 flue gas desulfurization system, installation of early nitrogen oxides reduction projects at Big Bend Power Station, repowering of coal-fired Gannon Power Station to natural gas-fired H. L. Culbreath Bayside Power Station, and optimization of the electrostatic precipitors at Big Bend. Future emission reductions will focus on nitrogen oxides reductions, which will be accomplished through installation of nitrogen oxides control technologies at Big Bend Power Station called Selective Catalytic Reduction Systems (SCRs).
