Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales · How we got these numbers · Report an error
City of Naperville is a municipal utility serving 62,990 customer accounts in Illinois; 56,117 of them are residential. Its home price is 18.2% under the Illinois average, 3rd place of 7 among larger utilities.
At 762 kWh a month a City of Naperville home pays about $99 in energy: 12.98 ¢/kWh, 18.2% below the Illinois average of 15.87 ¢.
City of Naperville charged homes 12.98 ¢/kWh against an Illinois average of 15.87 ¢, 3rd place of 7 among Illinois companies with 20,000+ homes. The next cheaper is City of Springfield at 11.95 ¢ (-1.02 ¢ from here) and the next higher-priced one Commonwealth Edison Co at 13.39 ¢ (+0.41 ¢).
City of Naperville has no SAIDI/SAIFI row in EIA-861 2024. Its 62,990 accounts therefore show "No data" in those rows instead of an estimate.
| City of Naperville, 2024 | Home | Business | Bill | SAIDI |
|---|---|---|---|---|
| City of NapervilleLowest in this table | 12.98 ¢/kWh | 10.84 ¢/kWh | $99at 762 kWh | No dataSAIDI |
| Illinois average against this company | +2.89 ¢/kWhcompany 18.2% below | +0.97 ¢/kWhcompany 8.2% below | +$22a month at 762 kWh | No data |
City of Naperville: +12.5% on 2024 for homes, Illinois +11.3%.
City of Naperville reported 14.61 ¢/kWh for homes in 2025, +12.5% on its 2024 figure of 12.98, while the Illinois average moved +11.3%.
11.17 ¢ in 2015, 12.98 ¢ in 2024 (+16.2%).
| Year | City of Naperville | Gap to Illinois residential | Gap to U.S. residential |
|---|---|---|---|
| 2015 | 11.17 | -1.33 | -1.48 |
| 2016 | 12.21 | -0.33 | -0.34 |
| 2017 | 13.05 | +0.10 | +0.16 |
| 2018 | 13.55 | +0.78 | +0.68 |
| 2019 | 13.21 | +0.18 | +0.20 |
| 2020 | 13.42 | +0.38 | +0.27 |
| 2021 | 13.09 | -0.09 | -0.57 |
| 2022 | 13.01 | -2.64 | -2.03 |
| 2023 | 12.95 | -2.76 | -3.05 |
| 2024 | 12.98 | -2.89 | -3.50 |
10 rows from EIA retail sales.
CSV52,627 in 2015, 56,117 in 2024 (+6.6%).
| Year | City of Naperville |
|---|---|
| 2015 | 52627 |
| 2016 | 52824 |
| 2017 | 53060 |
| 2018 | 53274 |
| 2019 | 54231 |
| 2020 | 54483 |
| 2021 | 54868 |
| 2022 | 55329 |
| 2023 | 55563 |
| 2024 | 56117 |
10 rows from EIA retail sales.
CSV12.98 and 10.84 ¢ for this company.
City of Naperville, Rates 2024: EIA retail sales.
CSV18.1 residential installations per 1,000 accounts.
City of Naperville, Net metering: EIA-861 survey.
CSVEnergy sold in 2024 was 1,212,099 MWh over 62,990 accounts, homes 42.3%; the typical home used 9,141 kWh.
EIA-861 holds 10 years of home price for City of Naperville, from 11.17 ¢ in 2015 to 12.98 ¢ in 2024 (+16.2%).
Corrected for inflation, a City of Naperville home paid 13.32 ¢/kWh in 2024 against 14.77 ¢ in 2013, −9.8%; the bill itself went 10.69 ¢ to 12.98 ¢ (+21.4%). A home using 1,000 kWh a month paid $1,772 for the year at the 2013 real price and $1,598 at the 2024 price. Place on home price: 7th cheapest of 37 in 2013, 7th of 28 in 2024 among Illinois utilities with 1,000+ homes.
City of Naperville: 13.32 ¢ in 2025 dollars (solid) and 12.98 ¢ as billed (dashed) in 2024.
| Year, City of Naperville | ¢ billed | ¢ in 2025 $ | Price place, City of Naperville | SAIDI min | SAIFI | SAIDI place, City of Naperville | Illinois median SAIDI |
|---|---|---|---|---|---|---|---|
| 2013 | 10.69 | 14.77 | 7 of 37 | – | – | – | – |
| 2014 | 10.67 | 14.51 | 6 of 37 | – | – | – | – |
| 2015 | 11.17 | 15.18 | 6 of 37 | – | – | – | – |
| 2016 | 12.21 | 16.38 | 10 of 37 | – | – | – | – |
| 2017 | 13.05 | 17.14 | 13 of 37 | – | – | – | – |
| 2018 | 13.55 | 17.38 | 17 of 37 | – | – | – | – |
| 2019 | 13.21 | 16.63 | 28 of 64 | – | – | – | – |
| 2020 | 13.42 | 16.69 | 14 of 27 | – | – | – | – |
| 2021 | 13.09 | 15.55 | 11 of 26 | – | – | – | – |
| 2022 | 13.01 | 14.32 | 10 of 26 | – | – | – | – |
| 2023 | 12.95 | 13.69 | 6 of 26 | – | – | – | – |
| 2024 | 12.98 | 13.32 | 7 of 28 | – | – | – | – |
City of Naperville, EIA utility 13208: EIA-861, CPI-U.
CSVCity of Naperville files with EIA as a municipal utility. In Illinois, municipal utilities serve 3% of residential customers at an average 12.7 cents per kWh, 16% below investor-owned utilities in Illinois. City of Naperville itself averaged 13.0 cents, 0.3 cents above its type in Illinois.
Shutoffs: this utility reported 2,670 disconnections for nonpayment in 2024, 4.2 per 100 accounts (Illinois: 3.6; EIA Form EIA-112). All utilities.
Smart (AMI) meters: 100% of its 56,117 residential meters.
EIA-861 2024, retrieved 2026-10-01. Illinois reliability, best and worst utilities, utility report card.
| City of Naperville sector | Accounts | Rate ¢/kWh | Gap to Illinois ¢/kWh |
|---|---|---|---|
| Residential | 56,117 | 12.98 | -2.89 |
| Commercial | 6,865 | 10.84 | -0.97 |
| Topic, City of Naperville | Status | Detail |
|---|---|---|
| Home price and accounts, City of Naperville | 10 years | 2015 to 2024, 56,117 homes in 2024 |
| Business price, City of Naperville | Filed 2024 | 10.84 ¢/kWh on 6,865 accounts |
| SAIDI and SAIFI, City of Naperville | No data for 2024 | no year of 2015 to 2024 for 62,990 accounts |
| Net metering, City of Naperville | Filed 2024 | 1,038 installations, 10.8 MW |
| Service-territory counties, City of Naperville | 2 counties | in Illinois |
| Smart meters (AMI/AMR), City of Naperville | Filed 2024 | 56,117 of 56,117 home meters AMI |
| 2025 early release, City of Naperville | Filed | 14.61 ¢/kWh for homes |
| Year | Home accounts, City of Naperville | Home ¢ | Business ¢ |
|---|---|---|---|
| 2015 | 52,627 | 11.17 | 9.66 |
| 2016 | 52,824 | 12.21 | 10.52 |
| 2017 | 53,060 | 13.05 | 11.12 |
| 2018 | 53,274 | 13.55 | 11.31 |
| 2019 | 54,231 | 13.21 | 10.88 |
| 2020 | 54,483 | 13.42 | 11.17 |
| 2021 | 54,868 | 13.09 | 10.70 |
| 2022 | 55,329 | 13.01 | 10.37 |
| 2023 | 55,563 | 12.95 | 10.55 |
| 2024 | 56,117 | 12.98 | 10.84 |
| Company near City of Naperville on price | Home ¢ | Gap % to City of Naperville | Accounts, City of Naperville = 1 |
|---|---|---|---|
| 1. Ameren Illinois Company | 11.76 | -9.4% | 19.43 |
| 2. City of Springfield | 11.95 | -7.9% | 1.13 |
| 3. City of Naperville (this company) | 12.98 | - | 1.00 |
| 4. Commonwealth Edison Co | 13.39 | +3.2% | 65.58 |
| 5. Southwestern Electric Coop Inc | 13.68 | +5.4% | 0.40 |
| 6. Southeastern IL Elec Coop, Inc | 14.47 | +11.5% | 0.40 |
| Class, City of Naperville | Accounts | Of City of Naperville accounts | Of MWh | kWh a year per account |
|---|---|---|---|---|
| Residential | 56,117 | 89.1% | 42.3% | 9,141 |
| Commercial | 6,865 | 10.9% | 50.3% | 88,811 |
| Industrial and other | 8 | 0.01% | 7.4% | 11,184,000 |
| kWh | Share of a 762 kWh month | Cost a month at 12.98 ¢ | Cost a year |
|---|---|---|---|
| 250 | 33% | $32.44 | $389 |
| 500 | 66% | $64.89 | $779 |
| 750 | 98% | $97.33 | $1,168 |
| 1,000 | 131% | $129.78 | $1,557 |
| 1,500 | 197% | $194.66 | $2,336 |
| 2,000 | 263% | $259.55 | $3,115 |
2 Illinois counties, region RFC:
Illinois other states: 2 of 2 counties of City of Naperville drawn
City of Naperville: 2 counties listed by EIA-861, Census 2023 outlines.
CSV62,990 accounts in 2024: residential 56,117, commercial 6,865, industrial 8.
In 2024 homes paid 12.98 cents; against the Illinois average that is -18.2%.
City of Naperville has no reliability row for its 56,117 homes in EIA-861 2024, so no SAIDI or SAIFI is shown; the Illinois median reporter is 98 min.
1,038 installations with 10.8 MW, of which residential installations number 1,018.
762 kWh at 12.98 cents comes to about $99, energy only.
Rank 3 of 7 in Illinois on price, -18.2% against the state average; 2 charge less than 12.98 ¢.
62,990 accounts sit behind City of Naperville, whose 2024 filing lacks no SAIDI/SAIFI row; the other 6 rows of the coverage table are on file.
Homes take 42.3% of 1,212,099 MWh, commercial accounts 50.3%, industrial and other 7.4%.
14.61 cents per kWh, +12.5% on the 12.98 of 2024 (EIA early release for 2025).
Home prices nearest to City of Naperville at 12.98 ¢/kWh in 2024, among companies with a page here, any state.