Natural Gas Pipelines

Natural Gas Throughput Volumes

(Bcf) 2011 2010 2009
Canadian Mainline(1) 1,887 1,666 2,030
Alberta System(2) 3,517 3,447 3,538
ANR 1,706 1,589 1,575
Foothills 1,289 1,446 1,205
Northern Border 971 902 706
Great Lakes 830 804 727
GTN 679 802 797
Iroquois 317 343 355
TQM 154 151 164
Ventures LP 150 144 145
Bison(3) 105
North Baja 92 60 96
Tamazunchale 57 52 54
Gas Pacifico 46 51 62
Portland 36 36 37
Tuscarora 33 35 34
TransGas 26 30 28
(1) Canadian Mainline's throughput volumes reflect physical deliveries to domestic and export markets. Customer contracting patterns have changed in recent years therefore the Company uses physical deliveries to measure system utilization. Canadian Mainline physical receipts originating at the Alberta border and in Saskatchewan in 2011 were 1,160 Bcf (2010 – 1,228 Bcf; 2009 – 1,579 Bcf).
(2) Field receipt volumes for the Alberta System in 2011 were 3,622 Bcf (2010 – 3,471 Bcf; 2009 – 3,578 Bcf) and includes three months of ATCO Pipelines receipts consistent with the commercial integration of NGTL and ATCO Pipelines effective October 1, 2011.
(3) Effective January 14, 2011.