Derivative Accounting (Tables)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Gross Notional Amount of Derivatives, Which Represents Both Purchases and Sales (Does Not Reflect Net Position)

The following table shows the outstanding gross notional volume of energy derivatives, which represent both purchases and sales (does not reflect net position): 

		Quantity
Commodity	Unit of Measure	March 31, 2024	December 31, 2023
Power	GWh	2,097	1,212
Gas	Billion cubic feet	235	200

Schedule of Gains and Losses From Derivative Instruments Not Designated as Accounting Hedges Instruments

The following table provides information about gains and losses from energy derivative instruments not designated as accounting hedging instruments (dollars in thousands):

	Financial Statement Location	Three Months Ended March 31,
Commodity Contracts		2024		2023
Net Loss Recognized in Income	Fuel and purchased power (a)	$	(55,942)	$	(188,930)

(a)Amounts are before the effect of PSA deferrals.

Schedule of Offsetting Assets

The following tables provide information about the fair value of APS’s risk management activities reported on a gross basis and the impacts of offsetting.  These amounts relate to commodity contracts and are located in the assets and liabilities from risk management activities lines of APS’s Condensed Consolidated Balance Sheets.

As of March 31, 2024: (dollars in thousands)	Gross  Recognized  Derivatives  (a)		Amounts Offset  (b)		Net  Recognized  Derivatives		Other  (c)		Amounts Reported on Balance Sheets
Current assets	$	73	$	—	$	73	$	5	$	78
Investments and other assets	—		—		—		—		—
Total assets	73		—		73		5		78
Current liabilities	(119,859)		13,100		(106,759)		(6,771)		(113,530)
Deferred credits and other	(34,872)		—		(34,872)		—		(34,872)
Total liabilities	(154,731)		13,100		(141,631)		(6,771)		(148,402)
Total	$	(154,658)	$	13,100	$	(141,558)	$	(6,766)	$	(148,324)

(a)All of our gross recognized derivative instruments were subject to master netting arrangements.

(b)Includes cash collateral provided to counterparties of $13,100 thousand that is subject to offsetting.

(c)Represents cash collateral and cash margin that is not subject to offsetting. Amounts relate to non-derivative instruments, derivatives qualifying for scope exceptions, or collateral and margin posted in excess of the recognized derivative instrument.  Includes cash collateral received from counterparties of $6,771 thousand and cash margin provided to counterparties of $5 thousand.

As of December 31, 2023: (dollars in thousands)	Gross Recognized Derivatives  (a)		Amounts Offset (b)		Net  Recognized  Derivatives		Other  (c)		Amounts Reported on Balance Sheets
Current assets	$	8,497	$	(1,694)	$	6,803	$	5	$	6,808
Investments and other assets	—		—		—		—		—
Total assets	8,497		(1,694)		6,803		5		6,808
Current liabilities	(85,736)		10,894		(74,842)		(6,071)		(80,913)
Deferred credits and other	(42,975)		—		(42,975)		—		(42,975)
Total liabilities	(128,711)		10,894		(117,817)		(6,071)		(123,888)
Total	$	(120,214)	$	9,200	$	(111,014)	$	(6,066)	$	(117,080)

(a)All of our gross recognized derivative instruments were subject to master netting arrangements.

(b)Includes cash collateral provided to counterparties of $9,200 thousand that is subject to offsetting.

(c)Represents cash collateral and cash margin that is not subject to offsetting. Amounts relate to non-derivative instruments, derivatives qualifying for scope exceptions, or collateral and margin posted in excess of the recognized derivative instrument.  Includes cash collateral received from counterparties of $6,071 thousand and cash margin provided to counterparties of $5 thousand.

Schedule of Offsetting Liabilities

The following tables provide information about the fair value of APS’s risk management activities reported on a gross basis and the impacts of offsetting.  These amounts relate to commodity contracts and are located in the assets and liabilities from risk management activities lines of APS’s Condensed Consolidated Balance Sheets.

As of March 31, 2024: (dollars in thousands)	Gross  Recognized  Derivatives  (a)		Amounts Offset  (b)		Net  Recognized  Derivatives		Other  (c)		Amounts Reported on Balance Sheets
Current assets	$	73	$	—	$	73	$	5	$	78
Investments and other assets	—		—		—		—		—
Total assets	73		—		73		5		78
Current liabilities	(119,859)		13,100		(106,759)		(6,771)		(113,530)
Deferred credits and other	(34,872)		—		(34,872)		—		(34,872)
Total liabilities	(154,731)		13,100		(141,631)		(6,771)		(148,402)
Total	$	(154,658)	$	13,100	$	(141,558)	$	(6,766)	$	(148,324)

(a)All of our gross recognized derivative instruments were subject to master netting arrangements.

(b)Includes cash collateral provided to counterparties of $13,100 thousand that is subject to offsetting.

(c)Represents cash collateral and cash margin that is not subject to offsetting. Amounts relate to non-derivative instruments, derivatives qualifying for scope exceptions, or collateral and margin posted in excess of the recognized derivative instrument.  Includes cash collateral received from counterparties of $6,771 thousand and cash margin provided to counterparties of $5 thousand.

As of December 31, 2023: (dollars in thousands)	Gross Recognized Derivatives  (a)		Amounts Offset (b)		Net  Recognized  Derivatives		Other  (c)		Amounts Reported on Balance Sheets
Current assets	$	8,497	$	(1,694)	$	6,803	$	5	$	6,808
Investments and other assets	—		—		—		—		—
Total assets	8,497		(1,694)		6,803		5		6,808
Current liabilities	(85,736)		10,894		(74,842)		(6,071)		(80,913)
Deferred credits and other	(42,975)		—		(42,975)		—		(42,975)
Total liabilities	(128,711)		10,894		(117,817)		(6,071)		(123,888)
Total	$	(120,214)	$	9,200	$	(111,014)	$	(6,066)	$	(117,080)

(a)All of our gross recognized derivative instruments were subject to master netting arrangements.

(b)Includes cash collateral provided to counterparties of $9,200 thousand that is subject to offsetting.

(c)Represents cash collateral and cash margin that is not subject to offsetting. Amounts relate to non-derivative instruments, derivatives qualifying for scope exceptions, or collateral and margin posted in excess of the recognized derivative instrument.  Includes cash collateral received from counterparties of $6,071 thousand and cash margin provided to counterparties of $5 thousand.

Schedule of Information about Derivative Instruments that have Credit-Risk-Related Contingent Features

The following table provides information about our energy derivative instruments that have credit-risk-related contingent features (dollars in thousands):

	March 31, 2024
Aggregate fair value of derivative instruments in a net liability position	$	154,731
Cash collateral posted	13,100
Additional cash collateral in the event credit-risk-related contingent features were fully triggered (a)	127,607

(a)This amount is after counterparty netting and includes those contracts which qualify for scope exceptions, which are excluded from the derivative details above.