A public hearing in Superior Wisconsin today (Mon Dec 4) will give people a chance to sound off on a controversial powerline proposed between Duluth and Wausau. Its the latest in a series of hearings begun last week along the line's proposed route. Opponents of the project say they're encouraged by a Wisconsin Department of Natural Resources report saying no one has shown a need for the line. Minnesota Public Radio's Stephanie Hemphill reports. { The two companies proposing the line - Minnesota Power and Wisconsin Public Service - say Wisconsin's power grid desperately needs new high voltage lines to bring power into the state. Right now, only four lines import power, three of them from the south. When demand is high, or when a storm knocks out one of the lines, the system could fail and the entire region could be blacked out. Minnesota Power's Jim Roberts says it's part of a nationwide problem.