Commonwealth Edison (ComEd) (Commonwealth Edison Co)

Last verified (benchmark): Feb 4, 2026
Last verified (tariff snapshot): Mar 4, 2026
EIA data year: 2024
EIA updated: Mar 4, 2026
Page updated: Mar 4, 2026

Commonwealth Edison (ComEd), operating as Commonwealth Edison Co, is an investor-owned electric utility serving customers in Illinois. Serves Chicago and northern Illinois. Price to Compare (supply+transmission) from Plug In Illinois; delivery charges are separate and paid by all customers.

This page brings together tariff-based rate information from our research, federal EIA statistics on sales and generation when available, and the cities and states this provider serves.

Residential rates

Tariff snapshot (Elgin, IL)

Customer charge: $0.00/mo
Energy charge (example tier): 9.66¢/kWh

Seasonal/tiered rates and riders may apply. Example tier used in our estimates.

plugin.illinois.gov· verified 2026-03-04

Example bill at 1,000 kWh (derived from tariff snapshot): $96.60/mo

Based on snapshot; excludes local taxes/fees; riders may vary.

For city-specific estimates (including water, sewer, trash), see Elgin's full breakdown

Typical bill benchmark (regulator / utility)

Typical residential bill at 1,000 kWh (example): $96.60/mo (9.66¢/kWh)

plugin.illinois.gov· verified 2026-02-04

9.66¢/kWh is the ComEd Price to Compare (Electric Supply + Transmission only). Delivery charges are not included; all customers pay delivery regardless of supplier.

Benchmarks reflect typical delivered bills; tariff snapshots show a specific rate schedule component used in our estimates.

Our estimates use tariff and official rate data from utility and regulatory sources. See our methodology for how we calculate bill estimates.

EIA Form 861 & 860 data (2024)

Supplemental data from the U.S. Energy Information Administration. Our tariff-based rates above remain primary for bill estimates. EIA data provides context on scale and generation.

Residential statistics

Avg. price (EIA): 13.39¢/kWh; EIA "avg price" reflects the full delivered price over the year (including riders/delivery and seasonal effects), so it can be higher than a single tariff energy tier.
Residential sales: 27.3M MWh
Customers: 3.7M
Revenue: $3.7B

Sources: EIA-861 (sales, revenue, customers), EIA-860 (generation).

States & cities served

Cities in our dataset where this provider offers electric service. Click through to see utility cost estimates for each city.

Illinois

Chicago
Schaumburg
Aurora
Elgin Il(used for tariff snapshot)
Joliet

Data sources

Our research: Tariff documents, PSC/regulatory filings, and official utility rate schedules. Each city page cites sources and last-verified dates.
EIA (2024): Form 861 (sales, revenue, customers) and Form 860 (generation capacity by fuel). Supplementary context; our tariff-based rates remain primary for bill estimates.

Methodology · All providers

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Understanding electricity costs

Learn how electric bills are calculated, what drives usage, and how rates vary by market.

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