City of Naperville's energy comes from natural gas, and solar. Natural Gas is the largest source of electricity, providing 98% of City of Naperville's energy. Solar is the second largest source, making up 2%.
98%
Natural Gas
2%
Solar
The average electricity rate for City of Naperville customers is 13.08 cents/kWh. City of Naperville has several different electricity rates for residential customers, as shown in the table below.
| Rate Name | Rate Type | Cost Per kWh |
| Residential Forward Energy | Fixed | 9¢ |
| Residential Service | Fixed | 11¢ |
In 2021, the average City of Naperville customer lost electricity less than one time for a duration of 68 minutes. In total, the average City of Naperville customer had their electricity out for about 20 minutes during the whole year.
Non-competitive customers: Credited to customer's next bill as a kWh credit at the retail rate; granted to utility at end of a 12-month billing cycle Competitive customers: Credited to customer's next bill as a kWh credit at electricity provider's avoided cost of electricity supply over the monthly period