In the past few years, several major Natural Gas pipelines came online: the Gulfstream Pipeline, 1,130 MMcf/d560 miles, which carries natural gas under the Gulf of Mexico from gas-processing facilities located on the Gulf coasts of the States of Mississippi and Alabama to west central Florida; the North Baja Pipeline, 500 MMcf/d80 miles (in the U.S.), which exports gas to electric power plants located in Baja California, Mexico; the Questar Southern Trails Pipeline, 87 MMcf/d405 miles, which transports gas from the four corners area of New Mexico/Utah (San Juan Basin) to the California/Arizona border area; and the Guardian, 750 MMcf/d142 miles, and Horizon, 380 MMcf/d29 miles, pipelines, which expanded the flow of gas supplies between the Chicago hub and the growing market of northern Illinois and southern Wisconsin. On December 1, 2000, the $2.9 billion, 1.3-Bcf/day Alliance Pipeline from western Canada (Fort St. John, British Columbia) to the Chicago area entered service.