Selected Consolidated Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2013

Components Of Selected Consolidated Quarterly Financial Data

Alliant Energy - All “per share” references refer to earnings per diluted share. Summation of the individual quarters may not equal annual totals due to rounding. Refer to Note 19 for additional information on discontinued operations.

	2013												2012
	March 31			June 30			Sep. 30			Dec. 31			March 31			June 30		Sep. 30		Dec. 31
	(in millions, except per share data)
Operating revenues		$859.6			$718.0			$866.6			$832.6			$765.7			$690.3		$887.6		$750.9
Operating income	120.7			103.2			201.4			108.6			95.6			108.8		213.7		101.6
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax	72.9			65.9			158.9			66.5			39.3			65.5		149.0		71.1
Income (loss) from discontinued operations, net of tax	(3.0		)	(0.6		)	(1.3		)	(1.0		)	(4.4		)	0.4		1.7		(2.8		)
Net income	69.9			65.3			157.6			65.5			34.9			65.9		150.7		68.3
Earnings per weighted average common share attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax	0.66			0.59			1.43			0.60			0.36			0.60		1.34		0.64
Income (loss) from discontinued operations, net of tax	(0.03		)	—			(0.01		)	(0.01		)	(0.04		)	—		0.02		(0.02		)
Net income	0.63			0.59			1.42			0.59			0.32			0.60		1.36		0.62

IPL [Member]

Components Of Selected Consolidated Quarterly Financial Data

IPL - Earnings per share data is not disclosed for IPL given Alliant Energy is the sole shareowner of all shares of IPL’s common stock outstanding during the periods presented.

	2013								2012
	March 31		June 30		Sep. 30		Dec. 31		March 31			June 30		Sep. 30		Dec. 31
	(in millions)
Operating revenues		$477.9		$383.4		$494.4		$463.1		$398.7			$360.7		$497.7		$393.2
Operating income	41.1		34.7		100.0		36.2		23.9			35.4		112.0		29.0
Net income (loss)	31.5		24.7		112.6		21.1		(1.5		)	19.6		106.5		25.6
Earnings available (loss) for common stock	22.9		22.2		110.0		18.5		(4.7		)	16.6		103.3		22.4

WPL [Member]

Components Of Selected Consolidated Quarterly Financial Data

WPL - Earnings per share data is not disclosed for WPL given Alliant Energy is the sole shareowner of all shares of WPL’s common stock outstanding during the periods presented.

	2013								2012
	March 31		June 30		Sep. 30		Dec. 31		March 31		June 30		Sep. 30		Dec. 31
	(in millions)
Operating revenues		$369.8		$319.9		$360.9		$355.7		$354.5		$315.7		$376.6		$345.2
Operating income	72.7		59.7		95.9		67.8		64.6		61.5		93.4		65.3
Net income	43.6		34.4		61.3		38.2		31.9		36.1		56.7		41.0
Earnings available for common stock	42.0		34.4		61.3		38.2		31.1		35.2		55.9		40.2