City of Naperville (IL) Electricity Rate per kWh (2024 EIA Data)
Municipal|EIA utility 13208|Illinois|Bundled
In 2024, City of Naperville (IL)'s residential customers paid an average of 12.98 cents per kWh: $67 million of revenue over 512,938 MWh of sales across 56,117 bundled residential customers, as reported to EIA on Form 861.
How the 12.98c figure is calculated
12.98c/kWh = $66,567k revenue / 512,938 MWh x 100. This is EIA's average realised price for 2024: everything City of Naperville (IL) billed its residential customers (energy, delivery, fuel and rider charges, fixed charges) divided by the kilowatt-hours it sold. It is not a tariff rate, and a 2024 annual average will differ from a current bill. For a 1,000 kWh month at this average, the energy cost works out to about $130 before taxes.
About City of Naperville (IL)'s 2024 electricity prices
City of Naperville (IL) is a municipally owned electric utility that reports to the U.S. Energy Information Administration under utility number 13208. In 2024 it served 56,117 bundled residential customers in Illinois, and its average realised residential price was 12.98 cents per kWh: $67 million of residential revenue divided by 512,938 MWh of residential sales.
Across the other sectors, City of Naperville (IL)'s 2024 average prices were 10.84 cents for commercial customers (6,865 accounts) and 10.67 cents for industrial customers (8 accounts). Industrial customers paid 2.31 cents less per kWh than households, a 18% discount that is typical of high-volume, high-voltage service.
Within Illinois, City of Naperville (IL) ranked number 5 of 25 utilities with bundled or delivery service by residential accounts served (56,117) and accounted for 1.14% of the state's residential electricity sales in 2024, measured in MWh sold or delivered rather than in customers. The state-wide average realised residential price in 2024, computed from the same EIA file, was 15.87 cents per kWh, so City of Naperville (IL)'s customers paid 2.89 cents below the Illinois average (-18.2%). For context, EIA's latest monthly figure for Illinois is 19.89 cents per kWh (June 2026, Electric Power Monthly); that is a different, more recent measure across all utilities and is not directly comparable with a 2024 annual average.
EIA's service-territory file places City of Naperville (IL) in 2 Illinois counties: DuPage and Will. On the grid side it operates in the RFC NERC region and the PJM Interconnection market, and reported transmission and distribution as its activities. Balancing authority code: PJM.
EIA's preliminary 2025 early release (published 4 August 2026) shows a residential price of 14.61 cents per kWh for City of Naperville (IL) in Illinois across 57,225 residential customers, 1.63 cents higher than the 2024 final figure. Early-release data has not been validated by EIA and must not be aggregated; the 2024 final figures remain the reference on this page until the 2025 final file is published.
The nearest other utilities in Illinois by service-territory centroid are City of St Charles (IL) (20.5 miles away, 15.37 cents), City of Batavia (IL) (28.6 miles away, 14.08 cents), City of Geneva- (IL) (28.6 miles away, 11.03 cents), Commonwealth Edison Co (41.3 miles away, 15.22 cents), and City of Peru (IL) (49 miles away, 12.00 cents).
| Sector | Customers | Sales (MWh) | Revenue ($k) | Avg c/kWh |
|---|---|---|---|---|
| Residential | 56,117 | 512,938 | 66,567 | 12.98 |
| Commercial | 6,865 | 609,689 | 66,085 | 10.84 |
| Industrial | 8 | 89,472 | 9,548 | 10.67 |
Counties served in Illinois (2)
From the EIA-861 Service Territory file; a listed county can be served in part only.
2025 early release (preliminary, not validated by EIA)
Residential price in Illinois: 14.61c/kWh (+1.63c vs 2024 final), 57,225 residential customers; commercial 11.39c; industrial 13.84c. Published 4 August 2026. EIA marks this file "not fully edited, use with caution"; the 2024 final figures above remain the reference.
Nearby and comparable utilities in Illinois
- EIA utility number
- 13208
- Ownership type
- Municipal
- Data year
- 2024 final (EIA-861)
- Primary state
- Illinois
- Service type
- Bundled (Part A)
- Bundled residential customers (IL, price basis)
- 56,117
- Residential accounts served (IL)
- 56,117
- All accounts, all sectors (IL)
- 62,990
- Residential price, 2024
- 12.98 c/kWh
- Commercial price, 2024
- 10.84 c/kWh
- Industrial price, 2024
- 10.67 c/kWh
- Residential sales
- 512,938 MWh
- Residential revenue
- $67 million
- Rank in Illinois by residential accounts served
- 5 of 25
- Share of Illinois residential sales (MWh, not customers)
- 1.14%
- Illinois average, 2024
- 15.87 c/kWh
- Counties served (IL)
- 2
- NERC region
- RFC
- RTO / ISO
- PJM Interconnection
- Balancing authority
- PJM
- Reported activities
- Transmission, Distribution
- 2025 early release (preliminary)
- 14.61 c/kWh
- Change vs 2024 final
- +1.63 c/kWh
- Registry status
- Reported on Form EIA-861 for 2024
Realised price times usage; fixed charges are already inside the average. Bill calculator ->
Annual averages hide seasonal and tariff differences. Diagnose a high bill or model time-of-use pricing.
Bill Diagnostic ->Time-of-Use Guide ->Source: U.S. Energy Information Administration, Form EIA-861 Annual, 2024 final data (public domain), retrieved 28 August 2026; prices are average realised revenue per kWh, not tariffs. Final 2024 file f8612024.zip (released 3 December 2025) from the EIA-861 detailed data files. Preliminary 2025 figures come from the early-release file f8612025er.zip (4 August 2026), which EIA has not yet validated; they are labelled as such wherever shown and never mixed into a final figure.
Method: cents per kWh = revenue (thousand dollars) divided by sales (megawatthours), times 100. Customer counts, sales and revenue are the utility's own annual survey responses by state and sector. Bundled = energy plus delivery from one utility; delivery-only = the wires charge for customers who buy energy from a competitive supplier; energy-only = a competitive supplier's energy charge without delivery. County lists come from the EIA-861 Service Territory file; territory centroids used for "nearby utilities" are unweighted means of Census 2023 county centroids. EIA content is in the public domain (EIA copyright and reuse statement); the EIA logo is not used. Corrections: [email protected].