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ALLIANT ENERGY CORP

For the period ended Dec 31, 2024. Filed Feb 21, 2025.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Feb 21, 2025

LNT$72.67-1.0%Stored close · as of Nov 6, 2026

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Contents

. Leases

NOTE 9. LEASES

Operating Leases - Alliant Energy’s, IPL’s and WPL’s operating leases primarily include leases of space on telecommunication towers and leases of property. Operating lease details are as follows (dollars in millions):

December 31, 2024December 31, 2023
Alliant EnergyIPLWPLAlliant EnergyIPLWPL
Property, plant and equipment, net$22$12$9$23$13$9
Other current liabilities$2$1$1$2$1$1
Other liabilities2011821128
Total operating lease liabilities$22$12$9$23$13$9
Weighted average remaining lease term11 years11 years12 years12 years12 years12 years
Weighted average discount rate4%4%4%4%4%4%

Finance Leases -WPL is currently leasing the Sheboygan Falls Energy Facility from AEF’s Non-utility Generation business. WPL is responsible for the operation of the EGU and has exclusive rights to its output. In 2024, WPL renewed this financing lease through 2044. There areno lease renewal periods remaining. For Alliant Energy, the leased Sheboygan Falls Energy Facility is eliminated upon consolidation and therefore is not reflected in Alliant Energy’s amounts below.

Related to their investments in solar generation, IPL and WPL entered into various land lease agreements with unaffiliated parties that have commenced. The leases have various terms with optional renewal periods that are assumed to be extended through the end of the estimated useful lives of the solar generating facilities. The leases do not contain purchase options and are fixed lease payments.

Finance lease details are as follows (dollars in millions):

December 31, 2024December 31, 2023
Alliant EnergyIPLWPLAlliant EnergyIPLWPL
Property, plant and equipment, net:
Sheboygan Falls Energy FacilityN/AN/A$74N/AN/A$79
Leased land for solar generation$189$53136$172$33139
$189$53$210$172$33$218
Other current liabilities:
Sheboygan Falls Energy FacilityN/AN/A$7N/AN/A$11
Leased land for solar generation$—$——$—$——
——7——11
Other liabilities:
Sheboygan Falls Energy FacilityN/AN/A71N/AN/A78
Leased land for solar generation1895313617233139
1895320717233217
Total finance lease liabilities$189$53$214$172$33$228
Weighted average remaining lease term31 years28 years28 years33 years29 years27 years
Weighted average discount rate5%5%5%5%5%5%
Alliant EnergyIPLWPL
202420232022202420232022202420232022
Depreciation and amortization expenses$—$1$—$—$—$—$4$6$6
Interest expense86321—1087
Total finance lease expense$8$7$3$2$1$—$14$14$13

Finance lease liabilities arising from obtaining leased assets, which represent non-cash financing activities, were as follows (in millions):

Alliant EnergyIPLWPL
202420232024202320242023
Finance lease liabilities arising from obtaining leased assets$20$34$20$33$—$71

Expected Maturities -As of December 31, 2024, expected maturities of lease liabilities were as follows (in millions):

20252026202720282029ThereafterTotalLess: amount representing interestPresent value of minimum lease payments
Operating Leases:
Alliant Energy$3$3$3$3$2$14$28$6$22
IPL22111815312
WPL1111171239
Finance Leases:
Alliant Energy9991010337384195189
IPL33333921075453
WPL1713131313324393179214
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.