Changes in Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2015

Changes in accumulated other comprehensive income (loss) including reclassification adjustments, by component:

Changes in Accumulated Other Comprehensive Loss

Changes in Accumulated Other Comprehensive Loss

The following table shows the changes in Pinnacle West's consolidated accumulated other comprehensive loss, including reclassification adjustments, net of tax, by component for the years ended December 31, 2015 and 2014 (dollars in thousands): 

	Year Ended December 31,
	2015			2014
Balance at beginning of period	$	(68,141	)	$	(78,053	)
Derivative Instruments
OCI (loss) before reclassifications	(957		)	(810		)
Amounts reclassified from accumulated other comprehensive loss (a)	4,187			13,483
Net current period OCI (loss)	3,230			12,673
Pension and Other Postretirement Benefits
OCI (loss) before reclassifications	16,980			(5,419		)
Amounts reclassified from accumulated other comprehensive loss (b)	3,183			2,658
Net current period OCI (loss)	20,163			(2,761		)
Balance at end of period	$	(44,748	)	$	(68,141	)

(a) These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 16.

(b) These amounts primarily represent amortization of actuarial loss, and are included in the computation of net periodic pension cost.  See Note 7.

ARIZONA PUBLIC SERVICE COMPANY

Changes in accumulated other comprehensive income (loss) including reclassification adjustments, by component:

Changes in Accumulated Other Comprehensive Loss

Changes in Accumulated Other Comprehensive Loss - APS

The following table shows the changes in APS's accumulated other comprehensive loss, including reclassification adjustments, net of tax, by component for the years ended December 31, 2015 and 2014 (dollars in thousands): 

	Year Ended December 31,
	2015			2014
Balance at beginning of period	$	(48,333	)	$	(53,372	)
Derivative Instruments
OCI (loss) before reclassifications	(957		)	(809		)
Amounts reclassified from accumulated other comprehensive loss (a)	4,187			13,483
Net current period OCI (loss)	3,230			12,674
Pension and Other Postretirement Benefits
OCI (loss) before reclassifications	14,726			(10,415		)
Amounts reclassified from accumulated other comprehensive loss (b)	3,280			2,780
Net current period OCI (loss)	18,006			(7,635		)
Balance at end of period	$	(27,097	)	$	(48,333	)

(a) These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 16.

(b) These amounts primarily represent amortization of actuarial loss, and are included in the computation of net periodic pension cost.  See Note 7.