Investments

9 Months Ended

Sep. 30, 2011

Investments

(8) INVESTMENTS

Unconsolidated Equity Investments—Equity (income) loss from Alliant Energy's and WPL's unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended Sep. 30 was as follows (in millions):

	Alliant Energy												WPL
	Three Months						Nine Months						Three Months						Nine Months
	2011			2010			2011			2010			2011			2010			2011			2010
American Transmission Company LLC (ATC)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)
Other		(0.4	)		(0.1	)		(1.4	)		(1.1	)		(0.1	)		(0.1	)		(0.7	)		(0.8	)
	($	10.1	)	($	9.3	)	($	29.6	)	($	28.7	)	($	9.8	)	($	9.3	)	($	28.9	)	($	28.4	)

Summary financial information from the unaudited financial statements of ATC for the three and nine months ended Sep. 30 was as follows (in millions):

	Three Months				Nine Months
	2011		2010		2011		2010
Operating revenues	$	142.8	$	136.8	$	420.6	$	414.0
Operating income		76.4		77.2		228.1		229.0
Net income		56.6		55.0		166.5		164.2

WPL [Member]

Investments

(8) INVESTMENTS

Unconsolidated Equity Investments—Equity (income) loss from Alliant Energy's and WPL's unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended Sep. 30 was as follows (in millions):

	Alliant Energy												WPL
	Three Months						Nine Months						Three Months						Nine Months
	2011			2010			2011			2010			2011			2010			2011			2010
American Transmission Company LLC (ATC)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)
Other		(0.4	)		(0.1	)		(1.4	)		(1.1	)		(0.1	)		(0.1	)		(0.7	)		(0.8	)
	($	10.1	)	($	9.3	)	($	29.6	)	($	28.7	)	($	9.8	)	($	9.3	)	($	28.9	)	($	28.4	)

Summary financial information from the unaudited financial statements of ATC for the three and nine months ended Sep. 30 was as follows (in millions):

	Three Months				Nine Months
	2011		2010		2011		2010
Operating revenues	$	142.8	$	136.8	$	420.6	$	414.0
Operating income		76.4		77.2		228.1		229.0
Net income		56.6		55.0		166.5		164.2