Who we are — and how we make money.
The Day Company is an independent Illinois solar information resource and a lead-generation business. Both are true. This page explains exactly how the two fit together — entity details, business model, and the standards that keep our numbers straight.
Illinois solar needed something between a sales pitch and a regulatory filing.
Almost everything written about Illinois solar is written to close a sale. Meanwhile the actual rules — supply rates, Illinois Shines REC pricing, net metering, the federal credit — kept changing, and the honest answers lived in places most homeowners will never read: tariff sheets, program guidebooks, public acts.
The Day Company was founded in March 2023 to build the in-between: plain-English guides where every figure is dated and sourced to an official publication, so nothing here has to be taken on our word. When the numbers work for a homeowner, we connect them with licensed, insured installation partners. When they don't — wrong roof, wrong utility, wrong economics — the honest answer is the answer.
Free for homeowners. Paid by partners. Checkable by anyone.
We may be compensated by installation partners when we connect them with qualifying homeowners. That's the model — no charge to homeowners, ever. Two things keep it honest: every figure we publish traces to an official source you can verify yourself, and we publish what solar can't do as plainly as what it can. Our credibility is the product; bending a number to help a sale would spend it.
What we do
- Publish dated, sourced Illinois solar data — rates, incentives, program rules — and keep it reviewed.
- Run a free, ~60-second eligibility check for Illinois homeowners.
- Connect qualifying homeowners with licensed, insured installation partners (compensation disclosed).
- Route the situations rooftop solar doesn't fit — renters, shaded roofs — toward options like community solar.
- Correct our errors publicly, on the record.
What we don't do
- Install solar or sell equipment — installation is our partners' work, not ours.
- Charge homeowners anything, at any step.
- Publish payback promises or savings guarantees — nobody can honestly make them.
- Claim expired incentives are available. The federal §25D credit ended December 31, 2025, and our pages say so.
- Represent ComEd, Ameren Illinois, the IPA, the ICC, or any government agency.
The entity, on the record.
| Legal name | The Day Company LLC |
|---|---|
| Entity | A Washington limited liability company, operating in Illinois |
| Founded | March 2023 |
| What we serve | Homeowners in ComEd and Ameren Illinois territory |
| Mailing address | 100 N Howard St Ste R, Spokane, WA 99201, United States |
| Contact | [email protected] |
| Website | theday.company |
Why an Illinois solar resource with a Washington entity? The company is registered in Washington and does its work — research, publishing, and homeowner connections — in the Illinois market it covers. Same entity, same address, on every page of this site.
The Day Company Editorial Team.
Every guide on this site is researched, written, and maintained by The Day Company Editorial Team, and checked against primary sources — the ICC, the IPA, utility tariffs, state statutes, the IRS — before publishing. We publish as a team, org-level, with honest review dates on every page. How that process works, and what happens when we get something wrong:
See whether your home qualifies.
Free, about a minute, no obligation — and if rooftop solar isn't the right fit for your situation, it says so.