December 1999
| U-10403 | Michigan Gas Utilities (depreciation) | 12/16/1999 |
| U-11750c | (Attachment) Commission's Own Motion (gas safety rules) | 12/6/1999 |
| U-11750c | Commission's Own Motion (gas safety rules) | 12/6/1999 |
| U-11578-R | SEMCO Energy Gas Company ('98'99 GCR reconciliation) | 12/6/1999 |
| U-11445 | West Bay Exploration Company (pipeline) | 12/6/1999 |
November 1999
| U-11577 | Wisconsin Public Service Corporation ('98/'99 GCR reconciliation) | 11/30/1999 |
| U-12141 | Michigan Consolidated Gas Company (pipeline) | 11/16/1999 |
| U-11844 | HPC Resources, Inc. (pipeline) | 11/16/1999 |
| U-11636 | Consumers Energy Company (Marysville facilities proceeds) | 11/16/1999 |
| U-11576-R | Northern States Power Company-Wisconsin ('98/'99 GCR reconciliation) | 11/16/1999 |
October 1999
| U-12100 | SEMCO Energy Gas Company (certificate of public convenience and necessity) | 10/28/1999 |
September 1999
| U-12081 | SEMCO Energy Gas Company (contract) | 9/28/1999 |
| U-12079 | SEMCO Energy Gas Company (pipeline) | 9/28/1999 |
| U-11225-R | Consumers Energy Company ('97/'98 GCR reconciliation) | 9/28/1999 |
| U-11963 | Michigan Gas Utilities (certificate of public convenienc | 9/14/1999 |
| U-11648 | Michigan Gas Utilities (schedule) | 9/14/1999 |
| U-11397b | Exhibit (billing rules) | 9/3/1999 |
| U-11397b | Michigan Consolidated Gas Company and Michigan Electric and Gas Association (billing rules) | 9/3/1999 |
August 1999
| li>U-11750 | Commission's Own Motion (gas safety code) | 8/31/1999 |
| U-11543-R | Peninsular Gas Company ('98 GCR reconciliation) | 8/31/1999 |
| U-10403 | Michigan Gas Utilities (extension of time) | 8/31/1999 |
| U-12050 | Michigan Consolidated Gas Company (customer choice program) | 8/17/1999 |
| U-11947 | HRF Exploratin & Production, Inc. (pipeline) | 8/17/1999 |
July 1999
| U-10655 | Peninsular Gas Company (filing extension) | 7/28/1999 |
| U-12018 | Wisconsin Public Service Corporation (tariff revision) | 7/28/1999 |
| U-12021 | Wilderness-Chester LLC (pipeline) | 7/28/1999 |
| U-11896 | Major Gathering Company (pipeline) | 7/28/1999 |
| U-11814 | and U-11819 Great Lakes Energy Cooperative (rehearing) | 7/28/1999 |
| U-11765 | Paxton Resources, L.L.C. (certificate) | 7/28/1999 |
| U-11192-R | Michigan Gas Utilities ('97 GCR reconciliation) | 7/28/1999 |
| U-11998 | Michigan Consolidated Gas Company (special contract) | 7/16/1999 |
| U-11911 | Northern States Power Company-Wisconsin (tariff revision) | 7/16/1999 |
| U-11813 | Great Lakes Energy Cooperative (certificate) | 7/16/1999 |
| U-11812 | Great Lakes Energy Cooperative (certificate) | 7/16/1999 |
| U-10982 | Michigan Gas Utilities (rehearing) | 7/16/1999 |
June 1999
| U-11948 | Miller Exploration Company (pipeline) | 6/10/1999 |
| U-11847 | Miracle Petroleum, L.L.C., Enveron Corporation, and Geotrend Exploration, Inc. (proration) | 6/10/1999 |
| U-11814 | Great Lakes Cooperative (certificate of public convenience and necessity) | 6/10/1999 |
| U-11397 | Michigan Consolidated Gas Company and Michigan Electric and Gas Association (billing practice rules) | 6/1/1999 |
May 1999
| U-11913 | Michigan Consolidated Gas Company (billing procedures) | 5/27/1999 |
| U-11820 | Susan and James Anderson v Consumers Energy Company | 5/27/1999 |
| U-11878 | Quicksilver Resources, Inc. (proration) | 5/11/1999 |
| U-11445c | West Bay Exploration Company (pipeline) | 5/11/1999 |
April 1999
| U-11871 | Mercury Exploration Company (certificate) | 4/23/1999 |
| U-11127d | d Peninsular Gas Company (rehearing) | 4/23/1999 |
| U-11931 | Shell Noreast Company (pipeline) Apr | 4/12/1999 |
| U-11912 | Union Oil Company of California | 4/12/1999 |
| U-11876 | Wisconsin Public Service Corporation | 4/12/1999 |
| U-11875 | Northern States Power Company-Wisconsin | 4/12/1999 |
| U-11802 | Michigan Gas Utilities (1999 GCR plan) | 4/12/1999 |
| U-11767 | Wanda Leverette v Michigan Consolidated Gas Company | 4/12/1999 |
| U-11712 | and U-11740 Consumers Power Company v Citizens Gas Fuel Company | 4/12/1999 |
| U-10982-R | Michigan Gas Utilities (1996 GCR reconciliation) | 4/12/1999 |
March 1999
| U-11939 | Consumers Energy Company (tariff revision) | 3/22/1999 |
| U-11867 | Dominion Midwest Energy, Inc. (pipeline) | 3/22/1999 |
| U-11865 | Dominion Midwest Energy, Inc. (pipeline) | 3/22/1999 |
| U-11864 | Dominion Midwest Energy, Inc. (pipeline) | 3/22/1999 |
| U-11806 | Richard Godbold v Consumers Energy Company | 3/22/1999 |
| U-11543-R | Peninsular Gas Company (motion) | 3/22/1999 |
| U-11509 | Consumers Energy Company (rehearing) | 3/22/1999 |
| U-11445b | West Bay Exploration Company (pipeline) | 3/22/1999 |
February 1999
| U-11879 | Terra Pipeline Company (pipeline) | 2/17/1999 |
| U-11829 | Presque Isle Electric & Gas Co-op (certificate) | 2/17/1999 |
| U-11826 | Presque Isle Electric & Gas Co-op (certificate) | 2/17/1999 |
| U-11803 | Peninsular Gas Company ('99 GCR plan) | 2/17/1999 |
| U-11863 | Dominion Midwest Energy, Inc. (pipeline) | 2/9/1999 |
| U-11862 | Dominion Midwest Energy, Inc. (pipeline) | 2/9/1999 |
| U-11861 | Dominion Midwest Energy, Inc. (pipeline) | 2/9/1999 |
| U-11816 | Consumers Energy Company (waiver) | 2/2/1999 |
| U-11807 | Northern States Power Company-Wisconsin (tariff revision) | 2/2/1999 |
| U-11127c | Peninsular Gas Company (motion) | 2/2/1999 |
January 1999
| U-11461 | et al. Michigan Consolidated Gas Company (contracts) | 1/19/1999 |
| U-11721 | Wisconsin Public Service Corporation (deferred accounting) | 1/6/1999 |
| U-11869 | Paxton Resources, L.L.C. (pipeline) | 1/6/1999 |
| U-11866 | Dominion Midwest Energy, Inc. (pipeline) | 1/6/1999 |
| U-11192-R | Michigan Gas Utilities ('97 GCR reconciliation) | 1/6/1999 |