Executive Summary – On July 28, 2010, Northern filed an Interim PRA to lower the Market Area summer fuel retention percentage from 0.43% to 0.16% effective September 1, 2010.

Executive Summary – On July 23, 2010, Northern filed to correct the pagination for Sheet No. 65.

Executive Summary – On July 16, 2010, Northern made a tariff filing to revise the firm service rate schedules to clarify certain requirements and to make other miscellaneous revisions.

Executive Summary – On July 16, 2010, Northern made a tariff filing to address a group capacity allocation issue in the Market Area.

Executive Summary – On June 30, 2010, Northern submitted for filing its annual report setting forth the Carlton Resolution buyout and surcharge dollars reimbursed to the Carlton Sourcers for the 2009-2010 heating season.

Executive Summary – On June 11, 2010, Northern made a tariff filing to establish parameters in its tariff applicable to resales at market-based rates of any storage capacity authorized to be sold at market-based rates.

Executive Summary – On June 11, 2010, Northern submitted for filing a non-conforming amendment to a TF Throughput Service Agreement entered into between Northern and Madison Gas and Electric Company.

Executive Summary – On May 28, 2010, Northern filed to update the list of applicable delivery points on Sheet No. 67 of its tariff with the Ogden Deferred Delivery point as a primary delivery point to SEMCO’s currently effective negotiated rate agreement.

Executive Summary – On May 3, 2010, Northern made a tariff filing which provides for Market Area Fuel percentages for the Summer Season and the Winter Season.

Executive Summary – On April 30, 2010, Northern filed to comply with the Commission directive to revise the customer names on Sheet No. 510.

Executive Summary – On April 30, 2010, Northern filed to add a new negotiated rate transaction with Cima Energy, LTD, as well as to remove expired agreements.

Executive Summary – On April 13, 2010, Northern filed a report of the penalty and DDVC revenues for the period November 1, 2008 through October 31, 2009.

Executive Summary – On March 31, 2010, Northern made a tariff filing to add new negotiated rate agreements with Tenaska, Mieco, Macquarie, Concord and BP as well as to remove expired agreements with Tenaska, Mieco and Macquarie.

Executive Summary – On March 31, 2010, Northern made a tariff filing to implement a negotiated rate transaction with Chevron. The agreement also contains non-conforming provisions. Finally, Northern proposes to remove expired agreements from its tariff.

Executive Summary – On March 17, 2010, Northern made a tariff filing to clarify the enforcement of storage parameters for both firm and interruptible storage.

Executive Summary – On March 17, 2010, Northern made a tariff filing to reflect several miscellaneous tariff revisions and minor corrections.

Executive Summary – On March 1, 2010, Northern Natural Gas Company filed for a limited waiver in order to allow MUD to have a transportation agreement with a maximum daily quantity of less than 50 MMBtu per day.

Executive Summary – On February 26, 2010, Northern Natural Gas Company filed for a limited waiver in order to allow Northern to resolve a prior period measurement inaccuracy with Northwestern Corporation.

Executive Summary-On February 2, 2010, Northern made a tariff filing to extend negotiated rate transactions with Cima Energy, LTD and Northwind Resources, LLC effective February 3, 2010.

Executive Summary - On February 1, 2010, Northern made a tariff filing to establish the Field Area and Storage fuel percentages effective April 1, 2010.