Exhibit 99.1 Public Service Company of New Mexico And Subsidiaries Comparative Operating Statistics Month Ended Eight Months Ended August 31, August 31, ------------------ ------------------ 2000 1999 2000 1999 ------ ------ ------ ------ Electric Service: Energy Sales - MWh (in thousands) Retail ............................. 692 647 4,740 4,553 Wholesale Firm Sales ..................... 33 16 129 120 Firm Surplus ................... 129 88 834 648 Short Term / Uncommitted ....... 966 1,159 7,542 6,289 ------ ------ ------ ------ Total Wholesale Sales .......... 1,128 1,263 8,505 7,057 ------ ------ ------ ------ Total Energy Sales ............ 1,820 1,910 13,245 11,610 ====== ====== ====== ====== Weather: Heating and Cooling Days - Albuquerque, NM The heating degree day value (HDD) is the accumulation in degrees that the daily mean temperature was below 65 F. The cooling degree day value (CDD) is the accumulation in degrees that the daily mean temperature was above 65 F. HDD 0 0 2,054 2,198 ======= ====== ======= ======= CDD 411 306 1,435 984 ======= ====== ======= =======