DTE Energy does not recommend one PV installer over another. We encourage you to get more than one quote from a qualified installer.  Check their credentials, verify that they have a qualified electrician on staff, and be sure that the installer pulls the appropriate permits from your local municipality.  

Altenergymag.com has also published a useful "10 Tips for Picking the Right Solar Installer" article. 

Here are a few places to start looking:

• Yellowpages.com
• Great Lakes Renewable Energy Association
• Solar Estimate.org
• DTE Energy’s Directory
• Powering Michigan's Future