System Average Interruption Duration Index (SAIDI) Outage in Minutes. SAIDI is the average outage duration for each customer served, and is calculated as the sum of all customer interruption durations divided by the total number of customers served . SAIDI is measured in minutes or hours over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.50 hours.

Number of Joint Utility Locating Information for Excavators (JULIE) Requests Serviced by Electric Utility per month

Special Events Cultural Amenities (SECA) grant awards from fiscal year 2010 through calendar year 2018. The mission of the Special Events Cultural Amenities (SECA) Grant Program is to create opportunities to provide social events and artistic experiences for Naperville and its visitors.

In order to better align the cost the utility pays to purchase power from its supplier, a purchased power adjustment was added to the customer bills. As the price of power goes up or down, due to open market forces, the utility can raise or lower what it charges its customers to match what it pays for the power.

This dataset quantifies watermain leaks discovered during surveys of the water system utilizing acoustical listening devices. From 2013-2017 a single City-wide survey was conducted per calendar year. Beginning in 2018 two City-wide surveys were completed.

Rates for water, and wastewater service for the City of Naperville and surrounding communities. These rates are based off of 5,610 gallons of consumption.

The City's outstanding debt service schedule. The dataset includes annual principal and interest payments for all outstanding debt.

Naperville's Electric Customer Classification.

This includes all the City's sales tax receipts including both the one percent state collected portion and the City's home rule sales from 2005 through present. The information is broken down by when the dollars were collected by the state and when the dollars were distributed to the City.

All of the City's capital improvement projects over the next five years. This information categorizes the City's projects and includes information regarding funding sources, expense types, and asset types.