Commercial Energy in Naperville, IL: Municipal Electric & Gas

Utility and supplier-choice checkpoint

The utilities below are local service context, not an address-level eligibility guarantee. Confirm the current bill, service address, account holder, and rate class before requesting a change.

Electricity: For a city electric account, Naperville’s municipal schedules govern the electric review. There is no ARES supplier switch for that municipal account. Confirm GS1/GS2 or another applicable schedule, demand treatment, and adjustments.

Natural gas: Nicor lists this community in its service territory. For a Nicor business account, Customer Select is the relevant supplier-choice program. Check current eligibility, supplier fees, billing arrangements, and applicable utility charges and credits.

Supplier selection affects the supply arrangement. It does not replace the delivery utility or its infrastructure and emergency responsibilities. A change in supplier does not guarantee a lower total bill.

Start with the city electric rate, then review gas separately

For an account served by Naperville’s municipal electric utility, the useful electric decision is rate and usage review rather than an alternative retail supplier switch. The city publishes different commercial schedules, including GS1 and GS2, and a power cost adjustment. Confirm the schedule on the bill before comparing equipment or operating scenarios.

A demand-billed premises should retain both measured peak and billed demand. Reducing one short equipment peak only changes cost to the extent allowed by the applicable city tariff. A supply-offer comparison cannot replace that rate review, and a fixed gas proposal cannot fix the municipal electric bill.

On the Nicor gas account, Customer Select offers a separate supplier-choice route for eligible customers. Compare therms and complete supplier terms over the same period. Where a Naperville mailing address has a different delivery utility, use that bill’s utility and rules rather than applying the municipal assumption to the address.

Account review steps

1. Record the municipal electric rate schedule and adjustment line items.
2. Check measured versus billed demand on commercial electric bills.
3. Keep the Nicor gas renewal and supplier comparison in a separate file.

Worked Energy Desk example

Suppose a 30-day electric bill shows 15,600 kWh at 8¢/kWh, followed by a 30-day bill showing 17,600 kWh at 9¢/kWh. Enter the bill line items in the bill change analyzer. The usage effect at the previous price is $160; the price effect on current consumption is $176. Supply cost therefore rises by $336 before demand and other charges.

Enter delivery, adjustments, taxes, and other amounts in their proper fields to reconcile the modeled totals to both bills. The model separates arithmetic effects; it does not weather-normalize the account or establish why equipment used more energy. These are illustrative inputs, not local utility rates, supplier quotes, or promised savings.

Build a useful review file

Bring a recent bill for each commodity, twelve months of usage where available, the current signed supplier agreement, and any notice or renewal correspondence. For a demand-billed electric account, add measured peak, billed demand, and available interval data. Note changes to equipment, occupancy, and opening hours rather than treating the last year as an unchanged forecast.

Use the renewal planner for verified notice terms and the multi-location planner when several meters are involved. If the immediate question is a higher bill, start with the bill change analyzer. The tools run in your browser and do not enroll an account or request a supplier switch. Their assumptions and limits are explained in the calculator methodology.

Decide what to review next

Start with the issue the account evidence reveals: billing reconciliation, demand and operating patterns, a contract deadline, or a complete supply comparison where choice is available. For a municipal electric account, keep the electric task focused on the applicable utility rate and usage; assess gas procurement separately.

When you request an account review, describe the utility, commodity, timing, and the decision you need to make. Keep account and meter identifiers out of public comments or shared examples. An account-specific recommendation requires the actual records, current tariffs, and complete supplier terms.