ilumen
Commercial & Industrial Solar Panel Installation

What are the benefits of Commercial and Industrial Solor?

From Day 1 of system operation, your facility will self-consume solar as it’s being produced, thus relying less on supply, delivery, and ancillary charges from the utility. Because of this, you’ll immediately notice a positive impact on your monthly utility expenses.

The Illinois Shines program provides payments based on system production via SRECs (Solar Renewable Energy Credits). Large commercial installations yield predictable 7-year cash flow with scheduled quarterly receivables, which can sometimes equal up to 40% of the initial investment.

The 30% Investment Tax Credit (ITC) has been a foundational industry accelerant, enabling millions of Americans to adopt solar since 2005. The ITC is available until 2035 and provides a dollar-for-dollar reduction in tax liability for the year placed in service.

  • 10% Energy Community Adder – Available for most facilities in northern Illinois.
  • 10% Domestic Content Adder – Available for certain made in USA equipment.
  • 10% Low Income Community Adder – Available for designated locations.

Recent provisions for Direct Pay make clean energy credits available to non-tax paying entities such as non-profits, churches, schools, and municipalities. As a result, tax exempt entities can now yield all the benefits of solar ownership vs. 3rd party ownership in previous years.

NOW AVAILABLE Distributed Generation Rebate and Battery Rebate from ComEd. Solar and battery storage systems significantly enhance utility grid stability by smoothing out fluctuations in energy supply and helping to manage peak demand.

Maintenance of solar installations is relatively minimal due to no moving parts, other than electrons. With long-term equipment manufacturer warranties and the ilumen Solar workmanship warranty, there’s comfort knowing that you’re supported for a very long time. Operation and Maintenance agreements are available for long-term support, as needed.

is my site a good fit for solar?

Step 1 - Feasibility Check

It's important to understand project particulars early on.  That's why our process starts with a remote feasibility check to gauge the opportunities or any hurdles regarding the project.  In just a few minutes, we can identify project feasibility by analyzing consumption patterns, checking available PV grid capacity, roof condition or suitable land, while correlating with the site owner’s goals of the project.

With Illinois’ solar policies at their strongest, there’s never been a better time to leverage solar.  Ready to learn more? Let’s talk.

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    Expertly Engineered Commercial Solar for Optimal Financials and Performance

    Our process starts with a complementary front-end site analysis, where we gather every crucial detail—energy consumption trends, electrical infrastructure, structural and roofing assessments, irradiance and shade mapping, and even high-precision drone measurements.

    Site Assessment

    Drone

    Our complimentary onsite audit is essential for streamlining the project development by confirming electrical equipment and specifications, optimizing site model for accurate performance simulations, and minimizing or eliminating change orders during the engineering and permitting phase.

    *All ilumen Solar site audits are conducted by licensed Drone Pilots

    Modeling & Design

    3D Model

    We use a multitude of tools and processes to accurately develop projects, such as satellite imagery, LIDAR, aerial drone photos & simulated drone measurement flights, and the most advanced solar design software on the market.

    Design & Proposal Review

    Proposal
    Once our team has completed a site model and design, it’s time to huddle up, review, and collaborate on the potential project scope and continue to align them with the project goals. The proposal review takes a deep dive into project considerations, timelines, and a detailed review of available incentives and financial metrics.

    What Does a Project Look Like?

    Every solar installation is completely custom to fit your needs, so depending on the size, scope, jurisdiction, and complex, project timelines can be variable.

    What to Expect:

    Once both parties agree to move forward with the project, our team gets to work immediately. Some early stages of onboarding include utility Interconnection Application, Net Metering Application, Permitting & Engineering, and initial stages of Incentive Applications.

    Pro Tip:

    Submitting an Interconnection Application with the utility prior to onboarding can be helpful with identifying any additional utility interconnection costs that may come up.

    What to Expect:

    Engineering & Permitting is often the most detailed and time-consuming phase of the entire project. Our engineering team will conduct structural calculations, electrical configurations, and cross reference with applicable code requirements for the AHJ (Authority Having Jurisdiction), typically the village or county where the project is located.

    Pro Tip:

    Scheduling a site assessment in the early stages of project development will help streamline this process by eliminating unforeseen project hurdles.

    What to Expect:

    Once the permit plans are completed and stamped, our team will email all documents for your approval prior to submission. Once approved, we will submit all applicable documents to the AHJ for review and approval. Permit approvals by the AHJ can vary based on size and scope but usually approved within 2-8 weeks.

     

    Pro Tip:

    An installation partner well versed in applicable code requirements and local AHJ requirements typically improves permit approval turnaround times.

    What to Expect:

    As soon as the permit is approved by the AHJ, our team begins preparation of mobilizing the team for installation. Some steps leading up to construction are procurement of any remaining materials, coordinating schedules, and keeping an eye on any pending weather events. Depending on the size and scope of the project, the physical solar installation is usually one of the quickest parts of the project

     

    Pro Tip:

    It’s important to communicate any particulars regarding business operation ahead of time so all parties can plan accordingly.

     

    What to Expect:

    Once the scope of the project is completed in full, the system cannot be commissioned until formal inspection approval. On the final day of installation, our team will reach out to the AHJ and schedule the final inspection. Depending on the inspector’s schedule, this can sometimes be within a couple days or a couple weeks.

     

    Pro Tip:

    It’s important to ensure that all aspects of your facility are up to code when an inspector is onsite to avoid any delays of solar inspection approval.

    What to Expect:

    Undoubtedly the most exciting part of the entire process is activating the system for production. Prior to doing this, we will need the local utility to grant the project PTO (Permission to Operate) after submitting the final inspection approval letter from the AHJ.

     

    Pro Tip:

    Internet connectivity plays a critical role in system monitoring, so prior planning is critical to streamline inverter commissioning and online monitoring access.

    Our clients

    Solar Panel Installation Reviews

    Posted on Google Google
    Drew Thacker profile picture
    Drew Thacker
    4 September 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Showed up right on time for an inverter replacement, had it replaced quickly. Quick responses to emails too.
    Posted on Google Google
    Colin Simpson profile picture
    Colin Simpson
    24 July 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Ilumen Solar was incredibly helpful and responsive in getting my SREC application completed after I was left stranded by my original solar contractor. They knew exactly what needed to be done and quickly helped resolve the problem. I would highly recommend Ilumen Solar to any stranded solar customer.
    Posted on Google Google
    Steve Martin profile picture
    Steve Martin
    17 July 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    There was a panel in my array that was only producing about half of the other ones. After getting the run around from the company that installed the system, I decided to contact Ilumen Solar based on their reviews. Best decision I made regarding my system. Even though the original panel was supposed to be replaced under warranty, Ilumen only charged an addition $50 to purchase and install a new panel. Two days later, instead of weeks of excuses, the panel was replaced and my system is at full power. I never have to worry about getting service again. Ilumen is my new go to solar company.
    Posted on Google Google
    Dhanush Chandrasekaran profile picture
    Dhanush Chandrasekaran
    11 June 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    This review is long overdue! When we bought our home in 2021, we knew we wanted to go solar. Out of all the installers we contacted, Zach was the only one who didn't sound like a typical salesperson. His genuine passion for the industry is what ultimately sold us on the project. While the process took some time to get off the ground due to HOA/ Developer approvals, Zach and his team were incredibly communicative and supportive throughout the delays. The actual installation in 2023 went exactly according to plan. The entire installation team did a fantastic job keeping it clean with minimal visible exterior conduit. Our solar production over the last 2 years has consistently performed the initial estimates. I highly recommend Zach and his team for an honest, high-quality installation.
    Posted on Google Google
    thomas ainslie profile picture
    thomas ainslie
    10 May 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Scheduling stayed organized the entire time, which honestly surprised me. Every appointment happened close to schedule and updates were consistent. The lower electric bill has been a huge bonus already.
    Posted on Google Google
    Gerard Fox profile picture
    Gerard Fox
    4 May 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Many thanks to ilumen Solar and Barrington Electric, who recently installed additional infrastructure for us. These guys are fast, knowledgeable, and get the job done while having fun doing it.
    Posted on Google Google
    Connor Etling profile picture
    Connor Etling
    1 May 2026
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Zach, Dan, and Austin are awesome! Extremely knowledgeable, honest guys who deliver top-quality work. Highly recommend!
    Posted on Google Google
    John Slater profile picture
    John Slater
    26 December 2025
    Google star 1Google star 2Google star 3Google star 4Google star 5
    I'm very happy with Ilumen. They fixed my system when no one else would support my hardware. They were responsive and got the job done quick. I wish I had found them sooner.
    Posted on Google Google
    Bre War profile picture
    Bre War
    20 December 2025
    Google star 1Google star 2Google star 3Google star 4Google star 5
    Really happy we went with them!! Everyone we worked with was kind, respectful, and easy to talk to. They answered any questions, explained things clearly, and never made the process feel overwhelming. The install this past week went smoothly and the crew took great care of our home. Overall it was just a really positive experience and we’d definitely recommend them to anyone considering solar!! 🩵
    Posted on Google Google
    Kellie Ropers profile picture
    Kellie Ropers
    30 September 2025
    Google star 1Google star 2Google star 3Google star 4Google star 5
    From start to finish... this team was amazing. We researched solar on and off for 6+ years. We strive to support local and just felt the nationwide companies were not a fit for us. Ilumen fit the bill on so many levels. Local Illinois company with a big company feel and capabilities. They answered countless questions and walked us through every detail to get our unique system reviewed by the local municipality, installed and ultimately approved for final inspection. Our house was heavily shaded by substantial oak and hickory trees. However, Ilumen didn't panic when we approached them about putting the system on our outbuilding and back-feeding to the house. Every other company wanted to trench up our yard or told us it wasn't possible. Ilumen went out of their way to meet our needs and provide a system that worked within our budget and our unique physical setup. We're just a few months in but have seen the system out perform their original projected productions.
    These testimonials are from actual ilumen Solar customers. Individual results may vary.
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