However, in the analysis responding to the Jeffords/Lieberman request that had NOx, SO2, mercury and CO2 reduction levels similar to S. 556, we found significant  approximately a 20-30 percent decline of coal generation and a 30-50 percent increase in electricity prices compared to the reference case (depending on assumptions of energy technology penetration).
The analysis of NOx, SO2, mercury and CO2 showed an increase in electricity prices.