units GHGs NOx SO2

In-state Combustion tons 19% 60% 61% In-state Plus Out-of-state Generation tons 9% 52% 45%

In-state Combustion tons/MWH 7% 54% 55%

In-state Generation tons/MWH 18% 59% 61% In-state Plus Out-of-state Generation tons/MWH 15% 55% 49%

In-state Combustion tons/MMBtu 6% 54% 55%

In-state Generation tons/MMBtu 13% 57% 58% In-state Plus Out-of-state Generation tons/MMBtu 9% 52% 45%

Percentage Reduction between 2003 and 2010

   units GHGs NOx SO2

In-state Combustion tons 11% 58% 54% In-state Plus Out-of-state Generation tons 3% 52% 39%

In-state Combustion tons/MWH 8% 57% 53%

In-state Generation tons/MWH 18% 61% 58% In-state Plus Out-of-state Generation tons/MWH 15% 58% 46%

In-state Combustion tons/MMBtu 7% 56% 52%

In-state Generation tons/MMBtu 12% 58% 55% In-state Plus Out-of-state Generation tons/MMBtu 9% 55% 43%

Percentage Reduction between 2000 and 2010

Conclusions (part 1)• Change in the sector has been rapid and large-

scale in nature• The changes have been persistent in direction• While the recession in undoubtedly a factor, the

changes appear to have persisted through 2011• Depending on endpoints, GHG, NOx and SO2

emissions from in-state combustion have declined 11-19%, 58-60% and 54-61%, respectively

Conclusions (part 1) (cont.)

• Depending on endpoints, GHG, NOx and SO2 emissions from in-state combustion plus imports have declined 3-9%, 51-53% and 39-45%, respectively

• Depending on endpoints, emissions per MWH from in-state combustion for GHGs, NOX and SO2 have declined 4-10%, 51-61% and 50-58%, while emission per MWH from all in-state generation declined 16-19%, 57-61%, and 56-61%, respectively