December 1998
| U-11860 | Northern Michigan Oil & Gas Corp (pipeline) | 12/21/1998 |
| U-11844 | HPC Resources, Inc. (pipeline) | 12/21/1998 |
| U-11750 | Commission's Own Motion (rulemaking) | 12/21/1998 |
| U-11214-R | and U-11265-R SEMCO Energy Gas Company ('98/'98 GCR reconciliation) | 12/21/1998 |
| U-11509 | Consumers Energy Company (depreciation) | 12/7/1998 |
| U-11842 | Michigan Consolidated Gas Co. (contract) | 12/7/1998 |
| U-11833 | Consumers Energy Company (pipeline) | 12/7/1998 |
| U-11226-R | Northern States Power Co.-Wisconsin ('98 GCR reconciliation) | 12/7/1998 |
November 1998
| U-11824 | Michigan Consolidated Gas Company (price change) issued | 11/18/1998 |
| U-11773 | Consumers Energy Company (waiver) | 11/5/1998 |
| U-11629 | The Dow Chemical Company (waiver) | 11/5/1998 |
October 1998
| U-11788 | Michigan Gas Utilities, (tariff revision), issued | 10/12/1998 |
| U-11782 | Michigan Consolidated Gas Company, (performance standards), issued | 10/12/1998 |
| U-11764 | Michigan Consolidated Gas Company, (contract), issued | 10/12/1998 |
| U-11763 | Michigan Consolidated Gas Company, (contract), issued | 10/12/1998 |
| U-11762 | Michigan Consolidated Gas Company, (contract), issued | 10/12/1998 |
| U-11753 | Michigan Consolidated Gas Company, (contract), issued | 10/12/1998 |
| U-11752 | Michigan Consolidated Gas Company, (contract), issued | 10/12/1998 |
| U-11723 | Consumers Energy Company, (certificate of public convenience and necessity), issued | 10/12/1998 |
| U-11682 | Michigan Consolidated Gas Company, (rehearing), issued | 10/12/1998 |
| U-11427 | Michigan Gas Utilities, (transportation services), issued | 10/12/1998 |
| U-11227-R | Wisconsin Public Service Corporation, ('97/'98 GCR reconciliation), issued | 10/12/1998 |
September 1998
| U-11774 | Michigan Consolidated Gas Co. (pipeline) | 9/23/1998 |
| U-11771 | Cottrellville Pipeline Company (pipeline) | 9/23/1998 |
| U-11770 | Terra Pipeline Company (pipeline) | 9/23/1998 |
| U-11766 | SEMCO Energy Gas Company (tariff revision) | 9/23/1998 |
| U-11748 | Michigan Consolidated Gas Co. (contract) | 9/23/1998 |
| U-11145-R | Michgian Consolidated Gas Co. ('97 GCR reconciliation) | 9/23/1998 |
| U-11776 | SEMCO Energy Gas Company (gas transportation pilot) | 9/11/1998 |
| U-11193-R | Peninsular Gas Company ('97 GCR reconciliation) | 9/11/1998 |
August 1998
| U-11729 | Terra Energy Pipeline Company (pipeline) | 8/27/1998 |
| U-11484 | Presque Isle Electric & Gas Co-op (certificate) | 8/27/1998 |
| U-11690 | Michigan Gas Utilities (accounting | 8/5/1998 |
| U-11742 | Presque Isle Electric & Gas Co-op (pipeline | 8/5/1998 |
| U-11741 | Presque Isle Electric & Gas Co-op (pipeline | 8/5/1998 |
| U-11642 | Presque Isle Electric & Gas Co-op (show cause | 8/5/1998 |
July 1998
| U-11443 | Bouyer v Michigan Consolidated Gas Company | 7/24/1998 |
| U-11060-R | and U-11358 Consumers Energy Company ('96/'97 GCR reconciliation) | 7/13/1998 |
| U-11708 | West Bay Exploration Company (pipeline) | 7/13/1998 |
| U-11659 | Newstar Energy, USA, Inc. (allowable withdrawal) | 7/13/1998 |
June 1998
| U-11699 | SEMCO Energy Gas Company (special contract) | 6/26/1998 |
| U-11698 | SEMCO Energy Gas Company (special contract) | 6/26/1998 |
| U-11681 | Michigan Consolidated Gas Company (pipeline) | 6/26/1998 |
| U-11680 | Michigan Consolidated Gas Company (pipeline) | 6/26/1998 |
| U-11679 | Michigan Consolidated Gas Company (pipeline) | 6/26/1998 |
| U-11674 | Aurora Gas Company (certificate) | 6/26/1998 |
| U-11667 | Michigan Consolidated Gas Company (certificate) | 6/26/1998 |
| U-11497 | Dennis White & Sau White v Michigan Consolidated Gas Company | 6/26/1998 |
| U-11210 | et al. The Marketer Group v Michigan Consolidated Gas Company | 6/26/1998 |
| U-11669 | Michigan Consolidated Gas Company (accounting | 6/2/1998 |
| U-11703 | Consumers Energy Company (performance standards | 6/2/1998 |
| U-11626 | Wisconsin Public Service Corporation (tariff revision | 6/2/1998 |
| U-11600 | IPL Toledo Pipe Line (U.S.A.) Inc. (pipeline | 6/2/1998 |
| U-10630-R | Peninsular Gas Company (environmental surcharge reconciliation | 6/2/1998 |
May 1998
| U-11594 | Basin Pipeline, L.L.C. (pipeline) | 5/15/1998 |
| U-11445 | West Bay Exploration Company (pipeline) | 5/15/1998 |
| U-11623 | Michigan Consolidated Gas Company (pipeline) | 5/11/1998 |
| U-11625 | Consumers Energy Company (certificate of public convenience and necessity) | 5/11/1998 |
| U-11624 | Michigan Consolidated Gas Co. (pipeline) | 5/11/1998 |
| U-11670 | J5 Inc. (pipeline) | 5/11/1998 |
| U-11658 | Terra Energy Ltd. (pipeline) | 5/11/1998 |
| U-11624 | Michigan Consolidated Gas Co. (pipeline) | 5/11/1998 |
| U-11604 | J5 Inc. (pipeline) | 5/11/1998 |
| U-11589 | Peter R. Gout, d/b/a Lakeville Gas Associates (pipeline) | 5/11/1998 |
| U-11443 | Phillip Bouyer, Dorothy Hardy, Bouyer Funeral Home and the Estate of Terry L. Hardy v Michigan Consolidated Gas Company | 5/11/1998 |
April 1998
| U-11578 | SEMCO Energy Gas Company ('98/'99 GCR plan) | 4/28/1998 |
| U-11663 | Wisconsin Public Service Corporation (contract) | 4/28/1998 |
| U-11682 | Michigan Consolidated Gas Company (gas transportation pilot) | 4/28/1998 |
| U-11505 | Joel E. Cummings v Michigan Consolidated Gas Company | 4/28/1998 |
| U-11465 | Michigan Consolidated Gas Company (contracts) | 4/28/1998 |
| U-11462 | Michigan Consolidated Gas Company (contracts) | 4/28/1998 |
| U-11621 | Wisconsin Public Service Corp. (tariff revision) | 4/14/1998 |
| U-11577 | Wisconsin Public Service Corp. ('98/'99 GCR plan) | 4/14/1998 |
| U-11576 | Northern States Power Company-Wisconsin ('98/'99 GCR plan) | 4/14/1998 |
| U-11455 | Michigan Consolidated Gas Co. ('98 GCR plan) | 4/14/1998 |
| U-11062-R | Wisconsin Public Service Corporation ('96/'97 GCR reconciliation) | 4/14/1998 |
March 1998
| U-11645 | Consumers Energy Company (tariff revision) | 3/24/1998 |
| U-11458 | Basin Pipeline, L.L.C., pipeline | 3/10/1998 |
| U-11398 | Walter Zaremba, pipeline | 3/10/1998 |
| U-11542 | Michigan Gas Utilities, '98 GCR plan | 3/10/1998 |
February 1998
| U-11642 | Presque Isle Electric & Gas Co-op (show cause) | 2/25/1998 |
| U-11598 | Michigan Consolidated Gas Company (certificate of public convenience & necessity) | 2/25/1998 |
| U-11108 | Consumers Energy Company (curtailment) | 2/25/1998 |
| U-11373 | MCN Energy Group, Inc. (PUHCA certification) | 2/11/1998 |
| U-11543 | Peninsular Gas Company ('98 GCR plan) | 2/11/1998 |
| U-11505 | Joel Cummings v Michigan Consolidated Gas Company | 2/11/1998 |
| U-11170 | Presque Isle Electric & Gas Co-op (rehearing) | 2/11/1998 |
| U-10242 | Kathleen Guzman, Susan Booth, Christine Good, and Gloria Schaffer (declaratory ruling) | 2/11/1998 |
January 1998
| U-11581 | Wisconsin Public Service Corporation (contract revisions) | 1/28/1998 |
| U-11568 | Michigan Consolidated Gas Company (certificate of public convenience and necessity) | 1/28/1998 |
| U-11567 | Michigan Consolidated Gas Company (certificate of public convenience and necessity) | 1/28/1998 |
| U-11566 | Michigan Consolidated Gas Company (certificate of public convenience and necessity) | 1/28/1998 |
| U-11505 | Joel C. Cummings v Michigan Consolidated Gas Company | 1/28/1998 |
| U-11061-R | Northern States Power Company-Wisconsin ('96/'97 GCR reconciliation) | 1/28/1998 |
| U-11591 | Consumers Energy (pipeline) | 1/8/1998 |
| U-11546 | Consumers Energy (certificate) | 1/8/1998 |
| U-11419 | Presque Isle Electric & Gas Co-op (certificate) | 1/8/1998 |
| U-11418 | /u-11420/u-11422/u-11422 Presque Isle Electric & Gas Co-op (certificate) | 1/8/1998 |
| U-11417 | Presque Isle Electric & Gas Co-op (certificate) | 2/8/1998 |
| U-11294 | J.A.F. Properties, Inc. v Michcon Pipeline Company, Saginaw Bay Area Limited Partnership, and Saginaw Bay Lateral Company | 1/8/1998 |
| U-11150-R | SEMCO Energy Gas Company ('96/'97 GCR reconciliation) | 1/8/1998 |
| U-11035-R | SEMCO Energy Gas Company ('96/'97 GCR reconciliation) | 1/8/1998 |
| U-10244-R | Consumers Energy (energy conservation) | 1/8/1998 |