Jointly Owned Electric Utility Plants (Tables)

12 Months Ended

Dec. 31, 2011

Jointly Owned Electric Utility Plants [Abstract]

Schedule of jointly owned electric utility plants


Great Plains Energy
	Wolf Creek			La Cygne			Iatan No. 1			Iatan No. 2			Iatan			Jeffrey
	Unit			Units			Unit			Unit			Common			Energy Center
	(millions, except MW amounts)
Great Plains Energy's share		47	%		50	%		88	%		73	%		79	%		8	%

Utility plant in service	$	1,473.8		$	493.6		$	667.9		$	1,293.0		$	364.4		$	158.4
Accumulated depreciation		776.3			303.1			252.8			270.0			30.4			75.5
Nuclear fuel, net		76.6			-			-			-			-			-
Construction work in progress		39.4			79.1			6.5			5.9			30.2			5.3
2012 accredited capacity-MWs		547			711			620			641		NA				174


KCP&L
	Wolf Creek			La Cygne			Iatan No. 1			Iatan No. 2			Iatan
	Unit			Units			Unit			Unit			Common
	(millions, except MW amounts)
KCP&L's share		47	%		50	%		70	%		55	%		61	%

Utility plant in service	$	1,473.8		$	493.6		$	542.3		$	985.1		$	287.5
Accumulated depreciation		776.3			303.1			207.9			261.3			26.0
Nuclear fuel, net		76.6			-			-			-			-
Construction work in progress		39.4			79.1			2.6			4.4			9.3
2012 accredited capacity-MWs		547			711			493			482		NA

- Definition

Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.

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