Since Naperville purchases all its power supply requirements from IMEA, the Naperville and IMEA sources of electricity are the one and the same.¹ The sources of electricity reported by IMEA are listed below.

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IMEA Fiscal Year 2023 (May 1, 2022 thru Apr 30, 2023)

The following information was received from IMEA and shared by the Naperville Electric Utility:

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IMEA Fiscal Year 2022 (May 1, 2021 thru Apr 30, 2022)

Unlike previous years, IMEA did not report sources of electricity in the IMEA 2022 Annual Report. The following information was received from the Naperville Electric Utility:

IMEA Fiscal Year 2022 Energy Production By Source

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IMEA Fiscal Year 2021 (May 1, 2020 thru Apr 30, 2021)

IMEA provided the following in the IMEA 2021 Annual Report:

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IMEA Fiscal Year 2020 (May 1, 2019 thru Apr 30, 2020)

IMEA provided the following in the IMEA 2020 Annual Report:

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IMEA Fiscal Year 2019 (May 1, 2018 thru Apr 30, 2019)

IMEA provided the following in the IMEA 2019 Annual Report:

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IMEA Fiscal Year 2018 (May 1, 2017 thru Apr 30, 2018)

IMEA provided the following in the IMEA 2018 Annual Report:

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Notes:

¹ Annual generation of electricity from Naperville solar installations remains less than 1% of Naperville’s total purchases from IMEA. As of December 31, 2022, Naperville reports 20 commercial and 629 residential solar installations for a total installed solar capacity of 6,206.78 KW. Using an upper limit 20% capacity factor, that 6,206.78 KW of solar capacity is calculated to have produced no more than 10,874,278.6 kWh which represents 0.83% of total 2022 purchases from IMEA of 1,308,171,162 kWh.

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This webpage information is also available as a pdf file document “Naperville/IMEA Sources of Electricity“.