| Investor Updates* | Date |
| Summary of Infrastructure Recovery Mechanism in DTE Gas Rate Case Filing U-16999 | April 18, 2013 |
| Summary of Partial Settlement in MichCon's Rate Case Filing U-16999 | December 20, 2012 |
| Summary of Detroit Edison's Accounting Authority Application (U-17068) | August 2, 2012 |
| MichCon Rate Filing Summary U-16999 | April 20, 2012 |
| Detroit Edison Rate Case Summary U-16472 | October 21, 2011 |
| MichCon Rate Filing Withdrawal U-16400 | December 6, 2010 |
| Detroit Edison Rate Filing Summary U-16472 | October 29, 2010 |
| MichCon Rate Filing Summary U-16400 | July 29, 2010 |
| MichCon Rate Case Summary U-15985 | June 4, 2010 |
| Summary of Detroit Edison’s Final Electric Rate Order (Case U-15768) | January 12, 2010 |
| MichCon Rate Filing Summary U-15985 | June 10, 2009 |
| DTE Energy Renewables and Energy Optimization Filings Summary | March 6, 2009 |
| Detroit Edison Rate Filing Summary U-15768 | January 27, 2009 |
| Detroit Edison Rate Case Summary U-15244 | December 29, 2008 |
DTE Energy's Summary of Energy Legislation Passed by the Michigan House & Senate
| September 19, 2008 |
| Detroit Edison Rate Case Update Filing | February 20, 2008 |
| Detroit Edison Supplemental Rate Filing | August 31, 2007 |
| MichCon Gas Sale Settlement | August 22, 2007 |
| Detroit Edison Rate Filing Summary | April 13, 2007 |
| Detroit Edison Show Cause Settlement - Investor Summary | August 31, 2006 |
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