tw pnr billing november 2001 attached detail november 2001 pnr summary activity follows buyer po poi bom bal dekatherm rate dth invoice amount calpine energy 27507 78151 0 22 500 0 3883 43 683 75 richardson 27249 500622 0 10 000 0 0300 600 00 total 32 500 44 283 75 addition pnm cleared imbalance position discovered old pnr contract pnm took delivery gas november 29 th charges applied pnm activity