COMMERCIALLY SIGNIFICANT CONSTRAINTS

Market Date: 07-SEP-2010 06-SEP-2010 05-SEP-2010 04-SEP-2010 03-SEP-2010 02-SEP-2010 01-SEP-2010 31-AUG-2010 30-AUG-2010 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: 1615 1630 1645 1700

Capability N10H10  N10S10  N10W10  S10N10  W10N10  OC0 9999  9999  9999  9999  9999  OC1 9999  9999  9999  9999  9999

CM Zone N10H10  N10S10  N10W10  S10N10  W10N10  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 HOUSTON2010  -34.04% -160  -22.56% -106  -2.85% -13  22.56% 106  2.85% 13  NORTH2010  -0.04% -1  -0.37% -7  -0.89% -16  0.37% 7  0.89% 16  SOUTH2010  -21.72% 440  -41.75% 845  -5.27% 107  41.75% -845  5.27% -107  WEST2010  -1.99% 6  -2.98% 9  -82.94% 245  2.98% -9  82.94% -245  Total Scheduled Impact 285 741 323 -741 -323 Shadow Price $0.0  $0.0  $0.0  $0.0  $0.0

CSC/CRE Data