The short answer
Verify the caller and supplier independently before sharing a bill or authorizing a switch. A utility logo, urgent deadline or promised discount is not proof of identity.
The decision this guide helps you make
A caller says your supply discount expires today and requests an account number. End the call and use a number from your utility bill rather than the caller's message.
Evidence to gather before deciding
Keep the offer, company name, callback details and any authorization notice. Verify the supplier through the ICC and ask your utility whether an enrollment is pending.
The detail that is easy to miss
Give employees a simple approval rule: only the designated account decision-maker may authorize an energy agreement. Do not give a salesperson access to an online utility account.
Build a staff authorization handoff
Decision case · figures, where used, are hypothetical
A caller knowing the business address does not prove identity. Reception should record the claimed company, end the call and route the message to the designated account decision-maker. Verify independently before disclosing a bill or account number.
What would make this decision ready?
Preserve unexpected enrollment notices and ask the utility what action is pending. Keep dates, messages and authorization evidence for an ICC complaint. Ignoring an unfamiliar invoice does not itself cancel enrollment or resolve a balance.
Make the decision trail reviewable
Keep the signed agreement, pricing schedule, sales representations and utility notices together. Record who was authorized to act, what was agreed and when. If a problem develops, a clear chronology is more useful than an unsupported conclusion about motive. Do not share account credentials or full bills in an open message field. Use the provider or regulator’s appropriate secure channel when documentation is needed.
Match the rule to the customer
Household, small-commercial, larger-commercial and municipal accounts can be governed by different requirements. A consumer protection discussed on a public page should not be assumed to cover every business agreement. Check the current official rule and service class. When the issue involves legal rights, liability or a deadline, get help through an official consumer channel or a qualified adviser instead of relying on a generic website summary.
Separate approval from information gathering
A request to review an offer does not require authorizing a supplier contract. Verify whether a proposed form is merely a data release, a broker authorization or an actual enrollment agreement. Ask what information is needed and why. Have a designated account decision-maker evaluate changes; staff handling unsolicited calls should know how to route them without disclosing unnecessary information.
Turn a concern into a specific question
Instead of saying that a bill looks wrong, identify the billed period, disputed line item, expected treatment and supporting document. Ask for a written explanation and keep the case number. Escalate unresolved utility or supplier matters through the applicable official process. If an urgent payment, safety or service issue exists, contact the responsible utility promptly; do not assume that a pending inquiry suspends a deadline.
| Record | Why it matters | How to verify |
|---|---|---|
| Account and scope | Keeps the decision tied to the right service and customer. | Use the current utility, meter and customer class; keep account identifiers private. |
| Period and units | Prevents comparisons across different months or measures. | Write down billing days and whether the amount is kWh, kW, therms or dollars. |
| Written terms | Distinguishes a claim from an obligation. | Save the full proposed agreement, tariff or program notice and its date. |
| Unknowns and exclusions | Shows what the estimate cannot establish. | List unresolved charges, eligibility and operating assumptions before deciding. |
Use a tool without sending your numbers
A calculator is useful for checking an assumption, not for confirming a tariff, incentive or legal interpretation. Enter only nonidentifying figures in the relevant worksheet. If you need a human review, describe the question and utility first; do not paste an account number or confidential document into the inquiry. Keep the model alongside the written terms so an apparently precise output is not mistaken for a complete quote.
Illinois utility and supply eligibility guide ↗
Continue with a related question
Sources & further checks
Primary references checked for this guide on October 15, 2026. Follow the source for current tariffs, eligibility and program terms; rates here are not live offers.