Interconnection Process

Interconnection Process

Safety Is Always in the Plan to Generate Electricity

Solar panels should be installed in accordance with all local codes and regulations. Take the time to review the safety features available for your system.

Getting Started

We know that installing a private solar system is a big commitment. While DTE will not be designing or installing your system, we will be working with you and your installer throughout the interconnection process. DTE looks forward to working with you to get your system connected safely to the grid.

Initial Steps

  1. Review the interconnection process illustration.
  2. Determine project size and review interconnection requirements.
  3. Navigate to the Electric Service Installation Guide (Green Book, a/k/a Service Installation Manual) and review Section 5 (Service Equipment) and Section 7 (Wiring and Appliance Installation).
Category Project Size Application Fee Requirements
1 Projects equal to or under 20kW $50 Category 1
2 Projects greater than 20kW but less than or equal to 150kW $50 Category 2
3 Projects greater than 150kW but less than or equal to 550kW $150 Category 3
4 Projects greater than 550kW but less than or equal to 2MW $250 Category 4
5 Projects greater than 2MW $500 Category 5

Applications and Agreements

DTE uses PowerClerk to review and accept interconnection applications and receive all supporting materials. Once you create your PowerClerk account, you will be able to view and track the status of any projects you submit. As your project progresses through the interconnection process, you will receive status updates via email from PowerClerk. You may also receive requests for supporting documentation and forms if needed.

Start Your Application

Mail applications and agreements to:
Interconnection Coordinator
490 SB
DTE Energy
One Energy Plaza
Detroit, MI 48226
Roles and Responsibilities
DTE’s goal is to help you and your installer complete the interconnection process safely and with minimal delays. Please follow the process as outlined here and submit all requested materials in a timely manner to keep your project on track.

Customer Responsibilities
You and your installer are responsible for coordinating the design, installation, operation and maintenance of your private solar system. You are also responsible for following all applicable governmental laws and regulations (local, state and federal) as well as the requirements of DTE Electric's tariffs and rules, which includes a requirement for an externally located, readily accessible, and taggable disconnect switch. Please reference Section 5 and Section 7 of the Green Book.

DTE Responsibilities
DTE is responsible for meeting all required steps necessary to process your interconnection application in a timely manner. If you have any questions regarding the technical aspects of the application, please contact the interconnection hotline at 313.235.4333 or email the interconnection team at interconnect_account@dteenergy.com.

Completing the Interconnection Process
Once your construction documents are approved and your Parallel Operating Agreement has been signed, your project will be placed into a site visit queue. It is required that your system must remain OFF until DTE conducts the appropriate tests, configures your meter and completes the site visit.

Safety
DTE's top priority is the safety of its customers and employees. All private solar systems should be installed in accordance with all local, state and federal codes and regulations. Approval by DTE Electric and your local municipality are both required for safe operation of your system.

Contact Us

Billing Hotline
For Distributed Generation and Net Metering billing questions, please contact: 800.482.8720 and select option #4. For all other billing questions, contact 800.477.4747.

Interconnection Hotline
For questions about new installations, current installations or other questions about the interconnection process, please call us at 313.235.4333 or email the interconnection team at interconnect_account@dteenergy.com.
What is the interconnection process?

The interconnection process refers to the steps DTE requires solar installers to follow when installing private solar systems. Following these steps helps ensure the project is safely connected to the grid.

How long does it take to complete the interconnection process?

If the application, fee, customer paperwork, engineering drawings, installation, and Parallel Operating Agreement (POA) are all completed in a timely manner, the process typically takes 5-6 weeks for a Category 1 or 2 project. Category 3-5 project timelines depend on the size of the project and if they are export versus non-export projects. Please refer to the Category Requirements documents listed above for more detailed information regarding timelines.

Who do I call to check on the status of my interconnection application?

If the customer’s installer completed the application, the installer will be able to log in to the PowerClerk website and give their client status updates on the application. The installer also has the ability to grant PowerClerk access to the customer. If the customer completed the application through PowerClerk, they can use their user ID and password to log in and check the status. If you still have questions, please call 313.235.4333.

What is a Parallel Operating Agreement (POA), and do I need to sign one?

A POA is a required legal agreement between the customer and DTE that explains that both parties will operate their respective systems safely. Without a signed POA, the customer’s system is subject to shut-off.

How do I sign a POA?

A POA is required to be signed prior to a DTE site visit. Once a project reaches this stage in the process, a POA will be emailed to the customer from DocuSign for electronic signature. If necessary, DTE can also mail a hardcopy of the agreement to the customer for signature.

What should I do to prepare for the DTE site visit?

The customer does not need to be present so long as all equipment is outside and accessible by DTE field technicians. The panels should be clear and free of any debris (snow, leaves, etc.), the inverter should be on and the AC disconnect switch should be in the "OFF" position.

How do I know if I passed the site visit and inspection?

If the site visit is successful and the system passes inspection, the AC disconnect switch will be left in the "ON" position and the system will be operational. If the system fails the site inspection, the customer and installer will receive an email from DTE identifying the issues. Once the issues have been addressed, the customer must notify DTE to request a second site visit.

More
Can I switch my AC disconnect switch to “ON” before I pass my DTE site inspection and testing?

No. The AC disconnect MUST be left in the "OFF" position until the site passes DTE’s inspection and testing. DTE personnel will turn your switch to “ON” if the system passes. It is illegal to connect to the grid without approval and would violate Michigan rules and regulations and cause safety issues. Furthermore, connecting to the grid before a solar system is tested and approved by DTE personnel may cause the generated energy from the solar system to be measured as inflow energy resulting in a higher than usual monthly bill. The site visit includes properly configuring your meter to be able to measure both inflow and outflow energy.

Why does the AC disconnect need to be within 5 feet of the meter?

This is done for safety reasons to protect the DTE field technician operating on the system, the customer and emergency services. The AC disconnect switch and the meter MUST be within 5 feet of each other for the technician to be able to safely operate on them at the same time. Also, emergency services personnel will be able to isolate the solar system in case of an emergency because they are familiar with the location of the meter.