Why This Stretch of I-80 Confuses Homeowners
Most of Illinois has a simple answer to “who’s my electric utility?” Chicago and its collar counties run on ComEd. Central Illinois runs on Ameren Illinois. But the LaSalle County stretch of the I-80 corridor, running through Ottawa, La Salle, Peru, Streator, Marseilles, and Utica, sits almost exactly where ComEd’s northern Illinois territory and Ameren Illinois’s central Illinois territory meet. Joliet and Will County, just east of this corridor, are solidly ComEd. Peoria and Bureau County, further west and south, are solidly Ameren. In between, the line isn’t clean, and in one town it isn’t either investor-owned utility at all.
This matters more than it might seem. Illinois electric utilities set their own rules for net metering versus net billing, their own one-time solar and battery rebate amounts, their own interconnection application process, and their own timeline for turning a system on. Two homes a few blocks apart in the same town can be on different utilities with genuinely different solar economics, simply because of how electric franchise territories were carved up decades before either homeowner bought their house. We’d rather walk you through how to find your specific answer than guess and get it wrong.
Why Utility Boundaries Don’t Follow Town Lines
Electric utility service territories in Illinois were largely set by franchise agreements and infrastructure buildouts going back to the early-to-mid 20th century, then layered with municipal annexations, rural electric cooperative expansions, and the occasional town that built and kept its own electric department. None of that history cared about zip codes or school districts. The result: a single town can have most of its housing stock on one utility and a rural-cooperative-served subdivision or a municipal-utility pocket on another, and the dividing line can run down the middle of a county road rather than along a town boundary. That’s exactly the pattern in this corridor.
What We Can Verify, Town by Town
The figures below come from a third-party electric-provider coverage aggregator (findenergy.com), cross-checked against the City of Peru’s own published net metering policy for its municipal electric department. They are not each utility’s own official address-lookup result, and coverage percentages like these can shift as territories are adjusted, franchise agreements renew, or new construction is annexed. Treat every number here as directional, not definitive, for your specific address — then confirm with the methods in the next section before you plan anything.
Ottawa
The LaSalle County seat trends heavily Ameren Illinois (an estimated ~98% of accounts per third-party coverage data), with a small remaining share served by Corn Belt Energy, a rural electric cooperative. If you’re in Ottawa proper, Ameren is the likely answer, but confirm before assuming.
La Salle
Also trends Ameren Illinois (an estimated ~93% of accounts), with a smaller Corn Belt Energy cooperative share on the remainder. Not to be confused with Peru next door, which runs its own municipal utility.
Peru
The genuine outlier on this list. Most of Peru is served by the City of Peru Electric Department, a municipal utility with its own published net metering policy, not by ComEd or Ameren at all. Ameren Illinois and Corn Belt Energy each serve small remaining slivers. If solar rules for your address turn out to be neither ComEd’s nor Ameren’s, this is why.
Streator
Trends solidly ComEd by the same coverage data, more consistent with Joliet and the Will County side of the corridor than with its LaSalle County neighbors to the east. If you’re in Streator, ComEd’s rules are the more likely starting point, though we’ll still confirm your exact address.
Marseilles
Trends heavily Ameren Illinois (an estimated ~96% of accounts), with a small remaining ComEd share, an unusually direct illustration of the two networks physically overlapping in one small river town.
Utica
Trends heavily Ameren Illinois (an estimated ~97% of accounts), with a small Corn Belt Energy cooperative share, consistent with its neighbors Ottawa and La Salle just up the river.
We’re intentionally not publishing a street-by-street or subdivision-by-subdivision map here. We haven’t independently verified franchise-agreement boundaries at that level of precision, and getting it wrong would send you into a solar consultation with the wrong assumptions. What we can tell you honestly: within every one of these six towns, a meaningful minority of addresses sit on a different utility than the town-wide majority. Your specific address is the only one that matters, and there are fast, free ways to check it.
Three Ways to Confirm Your Exact Utility
Check Your Electric Bill
The fastest way. The company name printed at the top of your bill is your utility, whether that reads “Commonwealth Edison,” “Ameren Illinois,” or “City of Peru.”
Use the Utility’s Own Lookup Tool
Both ComEd and Ameren Illinois offer address-based new-service and outage-reporting tools on their own websites that confirm coverage for a specific address, more authoritative than any third-party estimate, including the one on this page.
Ask SolQ
Send us your address before your consultation and we’ll confirm your utility and the specific solar rules that apply, no guessing, before we design or quote anything.
Why Your Utility Actually Changes Your Solar Numbers
This isn’t a minor technicality. ComEd and Ameren Illinois run genuinely different programs, and homes in this corridor can end up on either one depending on which side of an invisible line they sit.
If You’re ComEd (likely Streator)
New systems since January 1, 2025 go on net billing, crediting exported power against the supply portion of your bill only. ComEd offers a one-time $300-per-kW Solar Generation Rebate and a separate $300-per-kWh Battery Storage Rebate, each with its own eligibility rules and trade-offs. Full details, including the legacy net metering grandfather rules, are on our ComEd territory page.
If You’re Ameren Illinois (likely Ottawa, La Salle, Marseilles, Utica)
New systems since January 1, 2025 go on Smart Solar Billing, and you make a permanent choice between kWh usage netting and monetary value netting at the time you apply. Ameren also offers a one-time $300-per-kW Distributed Generation rebate and a separate battery storage rebate that requires enrolling in one of three specific rate programs. Full details are on our Ameren Illinois territory page.
If You’re City of Peru Electric (likely central Peru)
A municipal utility sets its own interconnection and crediting rules independently of both ComEd and Ameren, published in its own net metering policy rather than a statewide investor-owned-utility framework. We pull Peru’s specific current policy for your account before designing anything; we don’t assume it mirrors either neighboring utility.
The interconnection process, typical timeline, rebate application steps, and even the paperwork you sign all differ by utility, not just the crediting formula. That’s the whole reason this page exists: getting your utility right at the start keeps every number that follows honest.
Illinois Shines Works the Same Way, Wherever You Sit
Illinois Shines, the state’s Adjustable Block Program administered on behalf of the Illinois Power Agency, applies to a solar system in Streator the same way it applies to one in Ottawa or Peru: your system generates Renewable Energy Certificates as it produces power, and an Approved Vendor can sell those RECs into the program on your behalf, typically factored into your financing to help offset system cost. SolQ is a registered Designee under multiple Approved Vendors participating in Illinois Shines. We are not the State of Illinois, the Illinois Power Agency, the Illinois Commerce Commission, ComEd, Ameren Illinois, or the City of Peru, and we don’t control REC pricing, program block capacity, or municipal utility policy.
What does change by utility is the interconnection process your Illinois Shines application has to move through, and the net billing or net metering framework your system lands on afterward, which is exactly why nailing down your specific utility before you sign anything matters more here than almost anywhere else in the state we serve.
Honest Install Proof for This Corridor
We’d rather tell you the truth than pad a number: per our completed-project records through July 2026, SolQ has zero completed installs in Ottawa, La Salle, Peru, Streator, Marseilles, or Utica. We haven’t completed an install in this specific corridor yet. We’re not going to borrow install counts from Joliet, Peoria, or anywhere else and imply they’re local to this corridor, because they aren’t.
What we can point to honestly is the track record on either side of this corridor. On the ComEd side, SolQ has nine completed Illinois installs to date, including in Joliet’s Will County neighborhood along the same I-80 corridor and in Rockford, DeKalb, and the Chicago collar suburbs, all built around the same net billing and rebate rules that apply in Streator. On the Ameren side, SolQ has 48 completed Illinois installs across 34 towns, including Decatur, Peoria, and Champaign-Urbana, all built around the same Smart Solar Billing and Distributed Generation rebate rules that apply in Ottawa, La Salle, Marseilles, and Utica. Neither of those numbers is this corridor’s number. We’re showing them to you because they’re the closest honest proxy for the standard we’ll hold your project to, not because we’re claiming installs we haven’t completed here.
What doesn’t change by market is the standard behind the install: the same 4.8-star Google rating across 413 reviews, A+ BBB rating, EnergySage 2026 Local Installer of the Year award, and NABCEP-certified crews stand behind a first project in this corridor exactly as they stand behind our hundredth project anywhere else.
I-80 Corridor Utility FAQ
Why don’t I know which utility serves my home in Ottawa, La Salle, Peru, Streator, Marseilles, or Utica?
Because this stretch of the I-80 corridor genuinely sits where ComEd’s northern Illinois territory and Ameren Illinois’s central Illinois territory meet, with Peru additionally served largely by its own municipal electric department. The boundary follows old franchise agreements and annexation history, not town limits, so two homes in the same town can be on different utilities.
Is Streator ComEd or Ameren?
Third-party electric-provider coverage data shows Streator served almost entirely by ComEd, more consistent with Joliet and the Will County side of the corridor than with its LaSalle County neighbors. Confirm with your own electric bill or ComEd’s address lookup tool, since coverage can vary by specific address.
Is Ottawa, Illinois ComEd or Ameren?
Third-party coverage data shows Ottawa trending heavily Ameren Illinois, with a small remaining share served by Corn Belt Energy, a rural electric cooperative. That’s a strong directional answer, not a guarantee for your specific address, so confirm with your bill or Ameren’s own lookup tool before assuming.
Is La Salle, Illinois ComEd or Ameren?
Third-party coverage data shows La Salle trending heavily Ameren Illinois, with a smaller Corn Belt Energy cooperative share on the remainder. La Salle the city is separate from Peru next door, which runs its own municipal electric utility rather than either investor-owned company.
Does Peru, Illinois have ComEd or Ameren, or something else?
Something else, for most of the city. Peru is largely served by the City of Peru Electric Department, its own municipal utility with a published net metering policy, not by ComEd or Ameren. Ameren Illinois and Corn Belt Energy each serve small remaining slivers of the city, so confirming your specific address still matters.
Is Marseilles, Illinois ComEd or Ameren?
Third-party coverage data shows Marseilles trending heavily Ameren Illinois, with a small remaining ComEd share, a direct example of the two utility networks physically overlapping inside one small town along the Illinois River.
Is Utica, Illinois ComEd or Ameren?
Third-party coverage data shows Utica trending heavily Ameren Illinois, with a small Corn Belt Energy cooperative share, consistent with its neighbors Ottawa and La Salle further up the Illinois River.
How can I find out for certain which utility serves my exact address?
Check the company name printed at the top of a recent electric bill, use ComEd’s or Ameren Illinois’s own address-based service lookup tool, or send us your address before your consultation. Any of those beats a town-wide estimate for your specific home.
Why does it matter whether I’m on ComEd, Ameren, or Peru’s municipal utility for solar?
Each utility sets its own net metering or net billing rules, its own one-time solar and battery rebate amounts and requirements, and its own interconnection process and timeline. Getting your utility wrong at the start can mean designing around rules that don’t actually apply to your address.
Can my neighbor and I really have different utilities on the same street?
Yes, and it happens in this corridor more than most places in Illinois. Utility franchise boundaries follow legacy agreements and annexation history rather than current town limits or street layouts, so it is genuinely possible for two adjacent properties to sit on different utilities.
Has SolQ completed any solar installs in this corridor yet?
Not yet, and we’re not going to pretend otherwise. Per our completed-project records through July 2026, SolQ has zero completed installs in Ottawa, La Salle, Peru, Streator, Marseilles, or Utica. Elsewhere in Illinois, we have nine completed ComEd-territory installs and 48 completed Ameren-territory installs, plus the same rating and NABCEP-certified crews behind every one of them.
Is solar free in this corridor?
No, and we won’t tell you it is. Illinois Shines pays for the RECs your system produces, and ComEd, Ameren, or Peru’s rebates can offset real cost, but none of that makes the equipment or installation free. A $0-down Lease or PPA means no upfront cash from you, not that the system has no cost; you pay for the power it produces over the contract term instead.
Is SolQ affiliated with ComEd, Ameren Illinois, or the City of Peru’s electric department?
No. SolQ is an independent solar installer and a registered Designee under multiple Approved Vendors participating in Illinois Shines. We are not ComEd, Ameren Illinois, the City of Peru, the State of Illinois, the Illinois Power Agency, or the Illinois Commerce Commission, and we don’t set rebate amounts, REC pricing, or utility service boundaries.
Not Sure Which Utility Serves You? We’ll Confirm It First.
Whether your address lands on ComEd, Ameren Illinois, or the City of Peru’s municipal utility, we confirm the exact answer and the specific rules that apply before we design or quote anything, anywhere along the I-80 corridor.
Get My Free Solar AnalysisLooking for the full picture beyond this corridor? See our Illinois solar hub, our ComEd territory guide, or our Ameren Illinois territory guide for the complete rebate, billing, and Illinois Shines mechanics that apply once your utility is confirmed.
SolQ is an independent solar provider and is a registered Designee under multiple Approved Vendors participating in Illinois Shines. SolQ is not affiliated with, endorsed by, or acting on behalf of ComEd (Commonwealth Edison), Exelon, Ameren Illinois, the City of Peru or its Electric Department, the State of Illinois, the Illinois Power Agency, the Illinois Commerce Commission, or any government agency. “Illinois Shines” and the Adjustable Block Program are administered by the Illinois Power Agency and its program administrator, not by SolQ. Utility service-territory percentages cited on this page are drawn from a third-party electric-provider coverage aggregator, not from ComEd’s, Ameren Illinois’s, or the City of Peru’s own official records, and are general directional information only, not a determination of which utility serves any specific address; confirm your utility directly with the applicable provider or your electric bill before making decisions. ComEd and Ameren Illinois rebate amounts, Illinois Shines REC pricing, and Illinois Shines block capacity are set by each utility and the program administrator and change over time; figures on this page are general program information current as of publication, not a quote or guarantee for your system. Solar RECs are a form of compensation for your system’s environmental attributes, not a rebate on the equipment itself, and selling them does not make a system “free.” Savings, rebate, and incentive figures shown are general information and estimates, not guarantees. Actual results vary by system, usage, and current program terms. The federal residential solar tax credit (Section 25D) ended for cash/loan purchases completed after December 31, 2025; a separate federal credit for commercial-owned solar (Section 48E) may apply to third-party-owned Lease/PPA systems through 2027, part of how financing partners can offer $0-down payments. Financing offered through third-party partners (LightReach for Lease/PPA, Salal Credit Union for loans); terms, including contract length and payment structure, are disclosed in your specific agreement and subject to partner approval. Install counts shown are drawn from SolQ’s completed project records and reflect systems on file as of this writing. Content verified as of August 2026.