Regulated Operating Expense (Tables)

3 Months Ended

Mar. 31, 2012

Regulated Operating Expense

Schedule of regulated operating expenses

	Three Months Ended		Three Months Ended		Twelve Months Ended		Twelve Months Ended
	2012		2011		2012		2011
Electric transmission and distribution expense	$	4,108	$	3,823	$	15,647	$	13,992
Natural gas transmission and distribution expense	652		562		2,476		2,225
Power operation expense (other than fuel)	3,794		2,677		14,394		11,129
Customer accounts and assistance expense	2,434		2,536		10,108		11,234
Employee pension expense (1)	2,536		1,844		9,496		6,279
Employee healthcare plan (1)	2,238		1,621		8,056		7,001
General office supplies and expense	2,752		2,898		10,011		11,807
Administrative and general expense	4,219		3,647		14,868		13,126
Allowance for uncollectible accounts	593		82		3,935		3,133
Miscellaneous expense	22		25		84		164
Total	$	23,348	$	19,715	$	89,075	$	80,090

(1) Does not include capitalized portion of costs, but reflects the GAAP expensed cost plus or minus costs deferred to and amortized from a regulatory asset and/or a regulatory liability for Missouri, Kansas and Oklahoma jurisdictions.