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Illinois Advisory · Local energy decisions

Start with your city.
Decide from your account.

A useful energy review starts with the utility on your bill. Explore 51 city guides with sourced utility details, local account questions, and worked Energy Desk examples.

Local utility listings provide context. The service address, current bill, and tariff determine the rules for your account.

Find a city or utility

51 guides

Chicagoland suburbs

Addison

Production schedules & peak demand

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Arlington Heights

Retail leases & renewal dates

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Aurora

New occupancy & changing operations

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Bedford Park

Industrial tenants & demand responsibility

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Metro East

Belleville

Ameren Illinois & new-business handover

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Chicagoland suburbs

Bensenville

Warehouse fit-outs & fleet charging

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicago & close suburbs

Berwyn

Storefront meters & shared heating

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Bloomington

Ameren rate class & mixed portfolios

Electric
Ameren Illinois
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Bolingbrook

Distribution growth & usage tolerance

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Buffalo Grove

Gas territory boundaries & two-utility sites

Electric
ComEd
Gas
Nicor Gas / North Shore Gas
Read the local guide
Chicagoland suburbs

Carol Stream

Printing, processing & startup peaks

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Champaign

Academic calendars & commercial occupancy

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Chicago & close suburbs

Chicago

Tenant authority, Peoples Gas & capacity

Electric
ComEd
Gas
Peoples Gas (confirm address)
Read the local guide
Chicago & close suburbs

Cicero

Multi-tenant buildings & account handover

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Metro East

Collinsville

Commercial move-ins & Ameren account setup

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Central & western Illinois

Decatur

Process load, gas use & operating continuity

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Northern Illinois

DeKalb

Seasonal occupancy & contract handover

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Des Plaines

Multiple buildings & bill reconciliation

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Downers Grove

Office occupancy & daily usage

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Quad Cities

East Moline

MidAmerican plant demand & gas transportation

Electric
MidAmerican Energy
Gas
MidAmerican Energy
Read the local guide
Metro East

Edwardsville

Ameren DS classes & expanding premises

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Chicagoland suburbs

Elgin

Mixed-use portfolios & meter inventory

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Elk Grove Village

Industrial load shape & capacity exclusions

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Elmhurst

Medical and professional tenancy

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicago & close suburbs

Evanston

Nicor Gas, institutions & tenant meters

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Glenview

Practice expansion & separate gas accounts

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Hoffman Estates

Office transitions & vacant space

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Itasca

Office/warehouse splits & grouped renewals

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Joliet

Warehouses, charging & gas heating

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Lombard

Retail/office comparisons & billing days

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Quad Cities

Moline

MidAmerican Illinois & separate supply bills

Electric
MidAmerican Energy
Gas
MidAmerican Energy
Read the local guide
Chicagoland suburbs

Mount Prospect

Metered suites & mixed business uses

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Municipal electric

Naperville

Municipal electric rates & Nicor gas choice

Electric
Naperville municipal electric
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Normal

Bloomington/Normal portfolios & lease turnover

Electric
Ameren Illinois
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Oak Lawn

Care facilities & continuous equipment

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicago & close suburbs

Oak Park

Mixed-use buildings & central boilers

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Orland Park

Retail opening hours & seasonal demand

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Palatine

Leased space & notice windows

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Peoria

Ameren DS classes & operating loads

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Chicagoland suburbs

Plainfield

New sites & occupancy changes

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Quincy

Illinois jurisdiction & neighboring-state accounts

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Quad Cities

Rock Island

Illinois/Iowa portfolios & MidAmerican billing

Electric
MidAmerican Energy
Gas
MidAmerican Energy
Read the local guide
Northern Illinois

Rockford

ComEd/Nicor & production changes

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Rosemont

Events, hotels & occupancy swings

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicagoland suburbs

Schaumburg

Retail portfolios & staggered contracts

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Chicago & close suburbs

Skokie

Gas identity & multi-tenant refrigeration

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Municipal electric

Springfield

CWLP demand review & Ameren gas

Electric
CWLP municipal electric
Gas
Ameren Illinois
Read the local guide
Chicagoland suburbs

Tinley Park

Restaurant gas & supplier notices

Electric
ComEd
Gas
Nicor Gas
Read the local guide
Central & western Illinois

Urbana

Tenant turnover & central energy systems

Electric
Ameren Illinois
Gas
Ameren Illinois
Read the local guide
Chicagoland suburbs

Waukegan

North Shore Gas & ComEd accounts

Electric
ComEd
Gas
North Shore Gas / Nicor Gas
Read the local guide
Chicagoland suburbs

Wheaton

Nonprofits, offices & approval calendars

Electric
ComEd
Gas
Nicor Gas
Read the local guide

From guidance to a decision

Bring your own numbers to the Energy Desk.

Compare complete supply offers, explain a bill change, plan a renewal, explore demand, or organize multiple meters. Examples are educational; account-specific rates and terms still need verification.