Northern Natural Gas (NNG) is a natural gas pipeline which brings gas from the Permian Basin in Texas to the Chicago area, Wisconsin, Minnesota and the Upper Peninsula of Michigan. It is owned by MidAmerican Energy Holdings Company. Its FERC code is 59. External links Pipeline Electronic Bulletin Board Natural gas pipelines in the United States Natural gas pipelines in Texas Natural gas pipelines in Illinois Natural gas pipelines in Wisconsin Natural gas pipelines in Minnesota Natural gas pipelines in Michigan