Visit the DTE Energy account registration page (see Resources). Click on the "Register" button.
Select "Current" if you currently have a DTE energy account. Select a "New" account if you've never had an account with DTE Energy.
Choose "Former" if you used to be a DTE Energy customer. After you make your selection, click on "Start Registration Process".
Enter your first and last names, and your Social Security number. Click on "Continue".
Enter your contact information including email address and phone number. Enter the address for the new account, and your billing address if it's different from the service address.
Follow the onscreen instructions and finish the registration. Expect service to start between 2 to 3 business days.