City of Naperville Electric Utility (City of Naperville - (IL))
- Last verified (tariff snapshot)
- Feb 5, 2026
- EIA data year
- 2024
- EIA updated
- Mar 4, 2026
- Page updated
- Feb 5, 2026
City of Naperville Electric Utility, operating as City of Naperville - (IL), is a municipal electric utility serving customers in Illinois. Municipal electric utility for Naperville, IL. Not served by ComEd; has its own rates and billing.
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 (Naperville, IL)
- Customer charge
- $21.54/mo
- Energy charge (example tier)
- 11.89¢/kWh
Seasonal/tiered rates and riders may apply. Example tier used in our estimates.
naperville.il.us· verified 2026-02-05Example bill at 1,000 kWh (derived from tariff snapshot): $140.41/mo
Based on snapshot; excludes local taxes/fees; riders may vary.
For city-specific estimates (including water, sewer, trash), see Naperville's full breakdown
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)
- 12.98¢/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
- 512.9K MWh
- Customers
- 56.1K
- Revenue
- $66.6M
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
- Naperville(used for tariff snapshot)
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.
Compare utility costs by state
Explore average utility costs across all cities and states in our dataset.
Understanding electricity costs
Learn how electric bills are calculated, what drives usage, and how rates vary by market.