ISI Energy · Cook, DuPage, Kane, Lake, McHenry, and Will counties
Home solar, explained in plain language, for the Chicago suburbs
If you just heard from us by phone, you are in the right place. ISI Energy is a sales, education, and project-coordination company. We walk Illinois homeowners through solar, battery backup, and EV charging options on a short video call, with no pressure and no door knocking. Licensed, ICC-certified partners perform all installation work.
20 to 30 minutes on Zoom. No obligation. We never ask for a deposit on the first call.
VERIFY US
Checking that we are real? Good. Here is how.
- Legal name: ISI ENERGY LLC, Illinois.
- One phone number: (224) 395-1162. If someone called you from a different number claiming to be ISI Energy, call us at this one to confirm.
- Where we work: Cook, DuPage, Kane, Lake, McHenry, and Will counties.
- What we are not: We are not a utility, not ComEd, not a government program, and not an installer. See How It Works.
WHAT WE HELP WITH
What we can walk you through
Pick the topic you are curious about. Each page explains how it works in Illinois, what a consultation covers, and what questions to ask anyone, including us.
Residential Solar
Is your home a reasonable fit for rooftop solar, and what are your choices? We review your usage, your roof, and how ComEd (or your municipal utility) credits solar today.
Commercial Solar
For small and mid-size businesses, property owners, and nonprofits in the suburbs. We explain what changes when the building is commercial.
Battery Backup
What a home battery can and cannot do during an outage, how it pairs with solar, and how to think about sizing.
EV Chargers
Level 2 charging at home, what your electrical panel needs, and how charging fits with a solar system.
Solar Financing Options
Purchase, loan, lease, and power purchase agreement, side by side. Who owns the system, who gets the incentives, and what to read before you sign anything.
HOW IT WORKS
What happens after you book
1. A short conversation
We confirm you own the home, which utility serves it, and what you want to learn. About five minutes by phone.
2. A plain-language consultation on Zoom
We look at your recent electric bills and your roof using satellite imagery, then explain your options: solar, battery, EV charging, and the four ways to pay for a system. You ask questions. We answer them or tell you where the answer lives.
3. A written summary
You get a one-page recap of what we discussed, what was recommended and why, and what the next step would be. Nothing to sign.
4. Coordination with a licensed partner, if you want to go further
If you decide to move ahead, ISI coordinates the project with a licensed, ICC-certified installation partner. They perform the site survey, design, permitting, installation, and utility interconnection. We stay on the project as your point of contact.
OUR ROLE
Who does what
Our role
Sales, education, and project coordination. We are the people who explain things, answer the phone, and keep the project moving.
Licensed partners
All regulated work, meaning electrical, roofing, permitting, and installation, is performed by independent, licensed partners certified by the Illinois Commerce Commission as Distributed Generation Installers. We name the partner on your project before you sign anything with them.
You
You stay the utility's customer and remain responsible for your electric bill. You choose whether, when, and how to move forward. We will tell you if solar does not make sense for your home.
OUR STORY TEASER
Iron sharpens iron
ISI Energy was started by people who had sat through too many solar pitches that skipped the explaining and went straight to the signature. Our name comes from Proverbs 27:17, and it is how we try to treat every homeowner: honest answers, mutual respect, and a conversation that leaves you sharper than it found you.
LATEST ANSWERS
Illinois Solar Answers
Short, sourced articles on the questions Chicago-suburb homeowners actually ask. Written by people at ISI, reviewed on a stated date, and linked to the primary source every time.
How solar billing works for ComEd customers after net metering changed
How Illinois Shines works, and who receives the REC value
How to verify an Illinois solar company before you sign anything
Frequently asked questions
Questions people ask on the first call
Is ISI Energy a solar installer?
No. ISI Energy is a sales, education, and project-coordination company. Installation, electrical, and roofing work is performed by independent, licensed partners certified by the Illinois Commerce Commission as Distributed Generation Installers. We tell you who the partner is before you sign anything.
Did ISI Energy really call me?
Possibly. We do reach homeowners by phone. The only number we use for callbacks and on this website is (224) 395-1162. If you want to confirm a call was from us, hang up and call that number.
What does the free consultation include?
A 20 to 30 minute video call where we review your recent electric bills, look at your roof using satellite imagery, and explain your options for solar, battery backup, EV charging, and how each can be paid for. You receive a short written summary afterward. There is nothing to sign.
Will you tell me if solar is not a good fit for my home?
Yes. Shade, roof age, roof direction, and low electric usage can all make solar a poor fit. Telling you that early is part of the job.
Which areas do you serve?
Homeowners and small businesses in Cook, DuPage, Kane, Lake, McHenry, and Will counties, Illinois, including communities such as Schaumburg, Naperville, Arlington Heights, Elgin, Aurora, Waukegan, Crystal Lake, and Joliet.
Ready for a straight answer about solar?
Book a 20 to 30 minute video consultation. We will explain your options, show you where the facts come from, and send you a written summary. No deposit, no obligation.