COMMERCIALLY SIGNIFICANT CONSTRAINTS

Market Date: 08-JUL-2009 07-JUL-2009 06-JUL-2009 05-JUL-2009 04-JUL-2009 03-JUL-2009 02-JUL-2009 01-JUL-2009 30-JUN-2009 Hour: 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 Interval: 1815 1830 1845 1900

Capability N09H09  N09S09  N09W09  S09N09  W09N09  OC0 9999  9999  9999  9999  9999  OC1 9999  9999  9999  9999  9999

CM Zone N09H09  N09S09  N09W09  S09N09  W09N09  Shift Factor MW Scheduled Impact Shift Factor MW Scheduled Impact Shift Factor MW Scheduled Impact Shift Factor MW Scheduled Impact Shift Factor MW Scheduled Impact HOUSTON2009  -34.32% -169  -21.32% -105  -1.72% -8  21.32% 105  1.72% 8  NORTH2009  -0.1% -2  -0.22% -3  0.0% 0  0.22% 3  0.0% 0  SOUTH2009  -22.26% 534  -40.86% 979  -3.0% 72  40.86% -979  3.0% -72  WEST2009  -2.0% -8  -3.41% -14  -38.55% -156  3.41% 14  38.55% 156  Total Scheduled Impact 355 857 -92 -857 92 Shadow Price $0.0  $0.0  $0.0  $0.0  $0.0

CSC/CRE Data