Skip Ribbon Commands
Skip to main content

Connecting to the Grid

If you are going to apply to interconnection yourself, or if you are working with a professional contractor, it is important to understand the key terms and steps within the process.

Connecting a solar energy system? Download our process guide (pdf)

Solar panels

What is an "Interconnection"?

An interconnection is an electric connection between a utility's grid and a private generation system (PGS). A PGS, also known as Distributed Generation (DG), has the capability to send energy to the utility's energy grid.

Application Process

Interconnection applications are required for all private generation systems (PGS) supplying energy to the electrical grid. As a residential or business customer, you have the choice to work with a professional contractor to submit an application or submit the application on your own.

Usually, contactors complete and submit the required application on behalf of their clients. The application asks technical information that an experienced contractor will know how to provide.

Submitting your own interconnection application?

Apply Online

Generation System Sizes

Smaller Generation Systems

A smaller generation system is often large enough for a residential household. The technical way of describing these smaller systems is that they, "distribute less than 10MVA". MVA stands for Mega Volt Amps, which is a measurement used to express the total energy load of a system. Learn about smaller systems

Larger Generation Systems

In contrast to smaller generation systems, larger generation systems distribute greater than 10 Mega Volt Amps (MVA). These systems are usually on the wholesale scale. Have you ever seen a large building or open space with rows of large solar panels? These are likely larger generation systems. Learn about larger systems

Interconnection Questions?

Have more questions about the interconnection process? Check out our Generation FAQs or view The Interconnection Process (pdf) for more information.

 Content Editor

Let's Get Connected

hands forming a heart

​View the interconnection brochure for tips and step-by-step process:
English (pdf) Spanish (pdf)

© Commonwealth Edison Company, 2023. All Rights Reserved.