December 1997
| U-11222 | Michigan Consolidated Gas Co. (depreciation) | 12/19/1997 |
| U-11599 | Consumers Energy Company (gas transportation pilot) | 12/19/1997 |
| U-11523 | Wisconsin Public Service Corporation (tariff revision) | 12/19/1997 |
| U-11411 | Rock Energy Company, L.L.C. (pipeline) | 12/19/1997 |
| U-11605 | Commission's Own Motion (Basin Pipeline safety jurisdiction) | 12/12/1997 |
| U-11572 | Consumers Energy Company (tariff revision) | 12/12/1997 |
| U-11346 | Mitten State Transportation (certificate of public convenience and necessity) | 12/12/1997 |
November 1997
| U-11215 | Southeastern Michigan Gas Co. ('97/'98 GCR plan) | 11/25/1997 |
| U-11545 | Consumers Energy Company (certificate of public convenience and necessity) | 11/25/1997 |
| U-11506 | and U-11066 Major Gathering Company (pipeline) | 11/25/1997 |
| U-11439 | Michigan Gas Utilities (tariff revision) | 11/25/1997 |
| U-11265 | Michigan Gas Company ('97/'98 GCR plan) | 11/25/1997 |
| U-10750-R | Consumers Energy Company (rehearing) | 11/25/1997 |
| U-11409 | SEMCO Energy Gas Company (accounting) | 11/7/1997 |
| U-11469 | Michigan Consolidated Gas Co. (special contract/City of Grand Rapids) | 11/7/1997 |
| U-11432 | Michigan Consolidated Gas Co. (special contract/South Redford School District) | 11/7/1997 |
| U-11431 | Michigan Consolidated Gas Co. (special contract/Crestwood School District) | 11/7/1997 |
| U-11430 | Michigan Consolidated Gas Co. (special contract/Garden City Public Schools) | 11/7/1997 |
| U-11170 | Presque Isle Electric & Gas Co-op (certificate of public convenience & necessity) | 11/7/1997 |
October 1997
| U-11220 | Michigan Gas Company and Southeastern Michigan Gas Company (rate revision) | 10/29/1997 |
| U-11407 | Michigan Consolidated Gas Company (special contract) | 10/15/1997 |
| U-11504 | Shell Western E&P, Inc. (pipeline) | 10/15/1997 |
| U-11499 | Consumers Energy Company (tariff revision) | 10/15/1997 |
| U-11492 | Force Antrim Development Inc. (pipeline) | 10/15/1997 |
| U-11481 | Wisconsin Public Service Corp (tariff revision) | 10/15/1997 |
| U-11468 | SEMCO Energy Gas Company (certificate of public convenience and necessity) | 10/15/1997 |
| U-11428 | Joel C. Cummings v Mich Con | 10/15/1997 |
September 1997
| U-11145 | Michigan Consolidated Gas Co. ('97 GCR plan) | 9/30/1997 |
| U-10982-R | Michigan Gas Utilities ('96 GCR reconciliation) | 9/30/1997 |
| U-10915-R | Michigan Consolidated Gas Co. ('96 GXR plan) | 9/30/1997 |
| U-11373 | MCN Energy Group, Inc. (PUHCA certification) | 9/12/1997 |
| U-11491 | Basin Pipeline L.L.C. (pipeline) | 9/12/1997 |
| U-11402 | Consumers Energy (certificate) | 9/12/1997 |
| U-11362 | Melvin K. Thomas v Michigan Consolidated Gas Co. | 9/12/1997 |
| U-11231 | Michigan Consolidated Gas Co. (certificate) | 9/12/1997 |
August 1997
| U-10983 | Peninsular Gas Company ('96 GCR reconciliation) | 8/25/1997 |
| U-10960 | Michigan Gas Utilities (rehearing) | 8/25/1997 |
| U-10750-R | Consumers Energy Company ('95/'96 GCR reconciliation) | 8/25/1997 |
| U-11145 | Michigan Consolidated Gas Company - '97 GCR plan | 8/13/1997 |
July 1997
| U-11457 | MCN Energy Group Inc. (PUHCA certification) | 7/31/1997 |
| U-11349 | Michigan Gas Co. and Southeastern Michigan Gas Co. (depreciation) | 7/31/1997 |
| U-11323 | Michigan Consolidated Gas Company (contract) | 7/31/1997 |
| U-11127 | Peninsular Gas Company (rate revision) | 7/31/1997 |
| U-11450 | Commission's Own Motion (gas safety code revisions) | 7/31/1997 |
| U-11347 | Michigan Gas Company (certificate) | 7/31/1997 |
| U-11192 | Michigan Gas Utilities ('97 GCR plan) | 7/31/1997 |
| U-11457 | MCN Energy Group Inc. (PUHCA certification) | 7/31/1997 |
| U-11349 | Michigan Gas Co. and Southeastern Michigan Gas Co. (depreciation) | 7/31/1997 |
| U-11401 | Consumers Energy Company (certificate of public convenience & necessity) | 7/10/1997 |
June 1997
| U-11406 | Mercury Exploration Company (pipeline) | 6/25/1997 |
| U-11330 | Consumers Energy Company (certificate of public convenience & necessity) | 6/25/1997 |
| U-11197 | Presque Isle Electric & Gas Co-op (certificate of public convenience & necessity) | 6/25/1997 |
| U-11363 | Wolverine Environmental Production, Inc. (pipeline) | 6/5/1997 |
| U-11359 | Major Gathering Company (pipeline) | 6/5/1997 |
| U-11215 | Southeastern Michigan Gas Company ('97/'98 GCR plan) | 6/5/1997 |
| U-11196 | Presque Isle Electric & Gas Co-op (motion) | 6/5/1997 |
May 1997
| U-11265 | Michigan Gas Company ('97/'98 GCR plan) | 5/22/1997 |
| U-11227 | Wisconsin Public Service Corporation ('97/'98 GCR plan) | 5/22/1997 |
| U-11226 | Northern States Power Company-Wisconsin ('97/'98 GCR plan) | 5/22/1997 |
| U-11225 | Consumers Energy Company ('97/'98 GCR plan) | 5/22/1997 |
| U-11304 | Southeastern Michigan Gas Company (certificate) | 5/7/1997 |
| U-11315 | Consumers Energy Company (pipeline) | 5/7/1997 |
| U-11294 | J.A.F. Properties, Inc. v MichCon Pipeline (leave to appeal) | 5/7/1997 |
| U-11245 | Michigan Consolidated Gas Company (certificate) | 5/7/1997 |
| U-11235 | Michigan Consolidated Gas Company (certificate) | 5/7/1997 |
| U-11233 | Michigan Consolidated Gas Company (certificate) | 5/7/1997 |
| U-11232 | Michigan Consolidated Gas Company (certificate) | 5/7/1997 |
April 1997
| U-11247 | Michigan Consolidated Gas Company (rehearing) | 4/24/1997 |
| U-11196 | Presque Isle Electric and Gas Co-op (certificate of public convenience & necessity) | 4/24/1997 |
| U-11003 | Michigan Consolidated Gas Company v Presque Isle Electric and Gas Co-op | 4/24/1997 |
| U-10424 | Washington 10 Storage (tariff revision) | 4/24/1997 |
| U-11329 | Ward Lake Energy, Inc. (pipeline) | 4/10/1997 |
| U-11045 | Michigan Consolidated Gas Company (contract/Aztec) | 4/10/1997 |
March 1997
| U-10960 | Michigan Gas Utilities (rate revision) | 3/27/1997 |
| U-11193 | Peninsular Gas Co. ('97 GCR plan) | 3/27/1997 |
| U-10013 | -R Michigan Consolidated Gas (energy conservation reconciliation) | 3/27/1997 |
| U-11328 | Mich Con (tariff revision) | 3/10/1997 |
| U-11322 | MCN Energy Group, Inc. (PUHCA certification) | 3/10/1997 |
| U-11320 | Wolverine Environmental Production, Inc. (pipeline) | 3/10/1997 |
| U-11222 | Mich Con (leave to appeal) | 3/10/1997 |
| U-11070-R | Michigan Gas Utilities (energy conservation reconciliation) | 3/10/1997 |
| U-10807 | Wolverine Gas and Oil and Shell Western E & P v Spartan Intrastate Pipeline System | 3/10/1997 |
February 1997
| U-11319 | Consumers Power Company (gas purchase agreement) | 2/20/1997 |
| U-11300 | Terra Energy Ltd. (pipeline) | 2/20/1997 |
| U-11234 | Michigan Consolidated Gas Co. (certificate) | 2/20/1997 |
| U-11192 | Michigan Gas Utilities ('97 GCR plan) | 2/20/1997 |
| U-11003 | Michigan Consolidated Gas Co. v Presque Isle Electric & Gas Co-op | 2/20/1997 |
| U-11301 | Michigan Consolidated Gas Company (special contract) | 2/5/1997 |
| U-11217 | Michigan Gas Company (certificate of public convenience and necessity) | 2/5/1997 |
| U-10640-R | Michigan Consolidated Gas Company ('95 GCR reconciliation) | 2/5/1997 |
January 1997
| U-11147 | Michigan Gas Company (conservation plan) | 1/28/1997 |
| U-11146 | Southeastern Michigan Gas Company (conservation plan) | 1/28/1997 |
| U-11289 | Michigan Consolidated Gas Company (contract) | 1/8/1997 |
| U-11291 | Michigan Consolidated Gas Co. (purchase contract) | 1/8/1997 |
| U-11193 | Peninsular Gas Company ('97 GCR plan) | 1/8/1997 |