6. BENEFIT PLANS

Components of Net Periodic Benefit Cost

The following tables provide the components of our net periodic benefit cost (credit) for the plans for the three and nine months ended September 30, 2013 and 2012:

					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in millions)
Service Cost	$	17	$	19	$	5	$	12
Interest Cost		51		56		18		26
Expected Return on Plan Assets		(69)		(80)		(27)		(26)
Amortization of Transition Obligation		-		-		-		1
Amortization of Prior Service Cost (Credit)		1		-		(17)		(5)
Amortization of Net Actuarial Loss		45		42		16		14
Net Periodic Benefit Cost (Credit)	$	45	$	37	$	(5)	$	22

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in millions)
Service Cost	$	52	$	57	$	17	$	35
Interest Cost		152		167		53		78
Expected Return on Plan Assets		(208)		(239)		(80)		(76)
Amortization of Transition Obligation		-		-		-		1
Amortization of Prior Service Cost (Credit)		2		-		(52)		(14)
Amortization of Net Actuarial Loss		137		117		48		43
Net Periodic Benefit Cost (Credit)	$	135	$	102	$	(14)	$	67

Benefit Plans

6. BENEFIT PLANS

The Registrant Subsidiaries participate in an AEP sponsored qualified pension plan and two unfunded nonqualified pension plans. Substantially all employees are covered by the qualified plan or both the qualified and a nonqualified pension plan. The Registrant Subsidiaries also participate in OPEB plans sponsored by AEP to provide health and life insurance benefits for retired employees.

Components of Net Periodic Benefit Cost

The following tables provide the components of net periodic benefit cost (credit) by Registrant Subsidiary for the plans for the three and nine months ended September 30, 2013 and 2012:

APCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,543	$	1,892	$	641	$	1,346
Interest Cost		6,916		7,553		3,363		4,616
Expected Return on Plan Assets		(9,260)		(10,486)		(4,537)		(4,188)
Amortization of Transition Obligation		-		-		-		201
Amortization of Prior Service Cost (Credit)		49		118		(2,512)		(716)
Amortization of Net Actuarial Loss		6,256		5,085		3,063		2,631
Net Periodic Benefit Cost	$	5,504	$	4,162	$	18	$	3,890

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	4,628	$	5,674	$	1,924	$	4,040
Interest Cost		20,747		22,659		10,090		13,847
Expected Return on Plan Assets		(27,780)		(31,458)		(13,610)		(12,564)
Amortization of Transition Obligation		-		-		-		601
Amortization of Prior Service Cost (Credit)		148		356		(7,537)		(2,147)
Amortization of Net Actuarial Loss		18,769		15,254		9,187		7,894
Net Periodic Benefit Cost	$	16,512	$	12,485	$	54	$	11,671

Benefit Plans

6. BENEFIT PLANS

The Registrant Subsidiaries participate in an AEP sponsored qualified pension plan and two unfunded nonqualified pension plans. Substantially all employees are covered by the qualified plan or both the qualified and a nonqualified pension plan. The Registrant Subsidiaries also participate in OPEB plans sponsored by AEP to provide health and life insurance benefits for retired employees.

Components of Net Periodic Benefit Cost

The following tables provide the components of net periodic benefit cost (credit) by Registrant Subsidiary for the plans for the three and nine months ended September 30, 2013 and 2012:

I&M
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	2,183	$	2,477	$	804	$	1,655
Interest Cost		6,025		6,562		2,056		3,196
Expected Return on Plan Assets		(8,206)		(9,392)		(3,295)		(3,212)
Amortization of Transition Obligation		-		-		-		33
Amortization of Prior Service Cost (Credit)		49		101		(2,356)		(595)
Amortization of Net Actuarial Loss		5,422		4,392		1,882		1,762
Net Periodic Benefit Cost (Credit)	$	5,473	$	4,140	$	(909)	$	2,839

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	6,551	$	7,431	$	2,414	$	4,965
Interest Cost		18,075		19,684		6,166		9,589
Expected Return on Plan Assets		(24,619)		(28,175)		(9,887)		(9,635)
Amortization of Transition Obligation		-		-		-		99
Amortization of Prior Service Cost (Credit)		146		305		(7,066)		(1,787)
Amortization of Net Actuarial Loss		16,266		13,177		5,645		5,287
Net Periodic Benefit Cost (Credit)	$	16,419	$	12,422	$	(2,728)	$	8,518

Benefit Plans

6. BENEFIT PLANS

The Registrant Subsidiaries participate in an AEP sponsored qualified pension plan and two unfunded nonqualified pension plans. Substantially all employees are covered by the qualified plan or both the qualified and a nonqualified pension plan. The Registrant Subsidiaries also participate in OPEB plans sponsored by AEP to provide health and life insurance benefits for retired employees.

Components of Net Periodic Benefit Cost

The following tables provide the components of net periodic benefit cost (credit) by Registrant Subsidiary for the plans for the three and nine months ended September 30, 2013 and 2012:

OPCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	2,362	$	2,751	$	1,028	$	2,187
Interest Cost		10,268		11,298		4,100		6,047
Expected Return on Plan Assets		(15,103)		(17,100)		(6,221)		(5,639)
Amortization of Transition Obligation		-		-		-		26
Amortization of Prior Service Cost (Credit)		71		186		(3,219)		(969)
Amortization of Net Actuarial Loss		9,287		7,610		3,761		3,418
Net Periodic Benefit Cost (Credit)	$	6,885	$	4,745	$	(551)	$	5,070

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	7,107	$	8,253	$	3,627	$	6,561
Interest Cost		30,852		33,895		12,994		18,142
Expected Return on Plan Assets		(45,386)		(51,301)		(18,698)		(16,917)
Amortization of Transition Obligation		-		-		-		78
Amortization of Prior Service Cost (Credit)		212		557		(9,680)		(2,905)
Amortization of Net Actuarial Loss		27,905		22,830		11,843		10,252
Net Periodic Benefit Cost	$	20,690	$	14,234	$	86	$	15,211

Benefit Plans

6. BENEFIT PLANS

The Registrant Subsidiaries participate in an AEP sponsored qualified pension plan and two unfunded nonqualified pension plans. Substantially all employees are covered by the qualified plan or both the qualified and a nonqualified pension plan. The Registrant Subsidiaries also participate in OPEB plans sponsored by AEP to provide health and life insurance benefits for retired employees.

Components of Net Periodic Benefit Cost

The following tables provide the components of net periodic benefit cost (credit) by Registrant Subsidiary for the plans for the three and nine months ended September 30, 2013 and 2012:

PSO
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,391	$	1,487	$	343	$	709
Interest Cost		2,748		3,076		948		1,449
Expected Return on Plan Assets		(3,919)		(4,503)		(1,522)		(1,480)
Amortization of Prior Service Cost (Credit)		75		(237)		(1,072)		(270)
Amortization of Net Actuarial Loss		2,461		2,051		869		797
Net Periodic Benefit Cost (Credit)	$	2,756	$	1,874	$	(434)	$	1,205

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	4,172	$	4,463	$	1,029	$	2,127
Interest Cost		8,245		9,226		2,844		4,348
Expected Return on Plan Assets		(11,756)		(13,511)		(4,566)		(4,441)
Amortization of Prior Service Cost (Credit)		223		(711)		(3,217)		(809)
Amortization of Net Actuarial Loss		7,383		6,154		2,607		2,391
Net Periodic Benefit Cost (Credit)	$	8,267	$	5,621	$	(1,303)	$	3,616

Benefit Plans

6. BENEFIT PLANS

The Registrant Subsidiaries participate in an AEP sponsored qualified pension plan and two unfunded nonqualified pension plans. Substantially all employees are covered by the qualified plan or both the qualified and a nonqualified pension plan. The Registrant Subsidiaries also participate in OPEB plans sponsored by AEP to provide health and life insurance benefits for retired employees.

Components of Net Periodic Benefit Cost

The following tables provide the components of net periodic benefit cost (credit) by Registrant Subsidiary for the plans for the three and nine months ended September 30, 2013 and 2012:

SWEPCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended September 30,				Three Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,752	$	1,775	$	424	$	831
Interest Cost		2,864		3,134		1,075		1,669
Expected Return on Plan Assets		(4,126)		(4,717)		(1,720)		(1,699)
Amortization of Prior Service Cost (Credit)		87		(198)		(1,289)		(234)
Amortization of Net Actuarial Loss		2,553		2,083		982		915
Net Periodic Benefit Cost (Credit)	$	3,130	$	2,077	$	(528)	$	1,482

					Other Postretirement
	Pension Plans				Benefit Plans
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	5,258	$	5,324	$	1,270	$	2,493
Interest Cost		8,591		9,403		3,226		5,005
Expected Return on Plan Assets		(12,381)		(14,150)		(5,160)		(5,096)
Amortization of Prior Service Cost (Credit)		262		(595)		(3,867)		(700)
Amortization of Net Actuarial Loss		7,660		6,248		2,946		2,744
Net Periodic Benefit Cost (Credit)	$	9,390	$	6,230	$	(1,585)	$	4,446