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ALLIANT ENERGY CORP

For the period ended Mar 31, 2024. Filed May 3, 2024.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2024 · Filed May 3, 2024

LNT$73.46+1.1%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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. Fair Value Measurements

NOTE 12. FAIR VALUE MEASUREMENTS

Fair Value of Financial Instruments - The carrying amounts of current assets and current liabilities approximate fair value because of the short maturity of such financial instruments. Carrying amounts and related estimated fair values of other financial instruments were as follows (in millions):

Alliant Energy · March 31, 2024 · December 31, 2023
Fair Value · Fair Value
Carrying · Level · Level · Level · Carrying · Level · Level · Level
Amount123TotalAmount123Total
Assets:
Money market fund investments$10$10$—$—$10$45$45$—$—$45
Commodity derivatives56—46105688—592988
Interest rate derivatives3—3—31—1—1
Deferred proceeds184——184184216——216216
Liabilities:
Commodity derivatives94—9139498—93598
Long-term debt (incl. current maturities)9,333—9,051—9,0519,034—8,677—8,677
IPL · March 31, 2024 · December 31, 2023
Fair Value · Fair Value
Carrying · Level · Level · Level · Carrying · Level · Level · Level
Amount123TotalAmount123Total
Assets:
Money market fund investments$6$6$—$—$6$45$45$—$—$45
Commodity derivatives34—2683454—302454
Deferred proceeds184——184184216——216216
Liabilities:
Commodity derivatives30—2733030—25530
Long-term debt (incl. current maturities)3,945—3,607—3,6073,945—3,664—3,664
WPL · March 31, 2024 · December 31, 2023
Fair Value · Fair Value
Carrying · Level · Level · Level · Carrying · Level · Level · Level
Amount123TotalAmount123Total
Assets:
Commodity derivatives$22$—$20$2$22$34$—$29$5$34
Liabilities:
Commodity derivatives64—64—6468—68—68
Long-term debt3,367—3,176—3,1763,070—2,933—2,933

Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):

Alliant EnergyCommodity Contract Derivative
Assets and (Liabilities), netDeferred Proceeds
Three Months Ended March 312024202320242023
Beginning balance, January 1$24$19$216$185
Total net losses included in changes in net assets (realized/unrealized)(3)(4)——
Settlements (a)(14)(20)(32)(32)
Ending balance, March 31$7($5)$184$153
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31($3)($4)$—$—
IPLCommodity Contract Derivative
Assets and (Liabilities), netDeferred Proceeds
Three Months Ended March 312024202320242023
Beginning balance, January 1$19$16$216$185
Total net gains (losses) included in changes in net assets (realized/unrealized)(4)1——
Settlements (a)(10)(17)(32)(32)
Ending balance, March 31$5$—$184$153
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at March 31($4)$1$—$—
WPLCommodity Contract Derivative
Assets and (Liabilities), net
Three Months Ended March 3120242023
Beginning balance, January 1$5$3
Total net gains (losses) included in changes in net assets (realized/unrealized)1(5)
Settlements(4)(3)
Ending balance, March 31$2($5)
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at March 31$1($5)

(a)Settlements related to deferred proceeds are due to the change in the carrying amount of receivables sold less the allowance for expected credit losses associated with the receivables sold and cash amounts received from the receivables sold.

Commodity Contracts -The fair value of FTR and natural gas commodity contracts categorized as Level 3 was recognized as net derivative assets (liabilities) as follows (in millions):

Alliant EnergyIPLWPL
Excluding FTRsFTRsExcluding FTRsFTRsExcluding FTRsFTRs
March 31, 2024($1)$8($1)$6$—$2
December 31, 2023321316—5
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