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Derivatives and Hedging (Tables)
12 Months Ended
Dec. 31, 2013
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
           
    Volume  
     December 31, Unit of
 Primary Risk Exposure  2013  2012 Measure
    (in millions) 
 Commodity:        
  Power   406   498 MWhs
  Coal   4   10 Tons
  Natural Gas   127   147 MMBtus
  Heating Oil and Gasoline   6   6 Gallons
  Interest Rate $ 191 $ 235 USD
           
 Interest Rate and Foreign Currency $ 820 $ 1,199 USD
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
  
            Gross Amounts Gross Net Amounts of
   Risk Management     of Risk  Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
       Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial  Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
   (in millions)
Current Risk Management Assets $ 347 $ 12 $ 4 $ 363 $ (203) $ 160
Long-term Risk Management Assets   368   3   -   371   (74)   297
Total Assets   715   15   4   734   (277)   457
                    
Current Risk Management Liabilities   292   11   1   304   (214)   90
Long-term Risk Management Liabilities    237   3   15   255   (78)   177
Total Liabilities   529   14   16   559   (292)   267
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $ 186 $ 1 $ (12) $ 175 $ 15 $ 190
                    
Fair Value of Derivative Instruments
December 31, 2012
  
            Gross Amounts Gross Net Amounts of
   Risk Management     of Risk  Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
       Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial  Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
   (in millions)
Current Risk Management Assets $ 589 $ 32 $ 3 $ 624 $ (433) $ 191
Long-term Risk Management Assets   528   5   1   534   (166)   368
Total Assets   1,117   37   4   1,158   (599)   559
                    
Current Risk Management Liabilities   546   43   35   624   (469)   155
Long-term Risk Management Liabilities    383   6   6   395   (181)   214
Total Liabilities   929   49   41   1,019   (650)   369
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $ 188 $ (12) $ (37) $ 139 $ 51 $ 190

(a)       Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b)       Amounts primarily include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging." Amounts also include de-designated risk management contracts.

(c)       There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
           
   Years Ended December 31,
 Location of Gain (Loss) 2013 2012 2011
   (in millions)
 Vertically Integrated Utilities Revenues $ 15 $ 10 $ 18
 Generation & Marketing Revenues   49   50   48
 Regulatory Assets (a)   (2)   (43)   (22)
 Regulatory Liabilities (a)   (5)   8   (3)
 Total Gain (Loss) on Risk Management Contracts $ 57 $ 25 $ 41

(a)        Represents realized and unrealized gains and losses subject to regulatory accounting treatment

recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Balance Sheet
 December 31, 2013
             
        Interest Rate   
        and Foreign    
     Commodity Currency Total
     (in millions)
 Hedging Assets (a) $ 7 $ - $ 7
 Hedging Liabilities (a)   6   2   8
 AOCI Gain (Loss) Net of Tax   -   (23)   (23)
 Portion Expected to be Reclassified to Net         
  Income During the Next Twelve Months   -   (4)   (4)
             
 Impact of Cash Flow Hedges on the Balance Sheet
 December 31, 2012
             
        Interest Rate   
        and Foreign    
     Commodity Currency Total
     (in millions)
 Hedging Assets (a) $ 24 $ - $ 24
 Hedging Liabilities (a)   36   37   73
 AOCI Gain (Loss) Net of Tax   (8)   (30)   (38)
 Portion Expected to be Reclassified to Net         
  Income During the Next Twelve Months   (8)   (4)   (12)

(a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

Collateral Required Under Various Triggering Events
    December 31,
    2013 2012
    (in millions)
 Liabilities for Derivative Contracts with Credit Downgrade Triggers $ 3 $ 7
 Amount of Collateral AEP Subsidiaries Would Have Been      
  Required to Post   33   32
 Amount Attributable to RTO and ISO Activities   28   31
Liabilities Subject to Cross Default Provisions
   December 31,
   2013 2012
   (in millions)
 Liabilities for Contracts with Cross Default Provisions Prior to Contractual      
  Netting Arrangements $ 293 $ 469
 Amount of Cash Collateral Posted   1   8
 Additional Settlement Liability if Cross Default Provision is Triggered   235   328
Appalachian Power Co [Member]
 
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
 December 31, 2013
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   48,995   33,231   34,843   13,469   17,057
 Coal Tons   31   3,389   -   1,013   1,692
 Natural Gas MMBtus   2,477   1,680   -   -   -
 Heating Oil and                 
  Gasoline Gallons   1,089   521   1,108   614   699
 Interest Rate USD $ 12,720 $ 8,627 $ - $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ - $ - $ - $ -
                    
 Notional Volume of Derivative Instruments
 December 31, 2012
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   94,059   64,791   132,188   -   -
 Coal Tons   1,401   2,711   3,033   1,980   1,312
 Natural Gas MMBtus   10,077   6,922   14,163   -   -
 Heating Oil and                 
  Gasoline Gallons   1,050   532   1,260   616   585
 Interest Rate USD $ 24,146 $ 16,584 $ 33,934 $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ 200,000 $ - $ - $ -
Cash Collateral Netting
    December 31,
    2013 2012
    Cash Collateral Cash Collateral Cash Collateral Cash Collateral
    Received Paid Received Paid
    Netted Against Netted Against Netted Against Netted Against
    Risk Management Risk Management Risk Management Risk Management
 Company Assets Liabilities Assets Liabilities
    (in thousands)
 APCo $ - $ 2,993 $ 1,262 $ 11,029
 I&M   -   2,030   867   7,576
 OPCo   -   -   1,774   15,500
 PSO   -   1   -   -
 SWEPCo   -   3   -   -
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
                    
APCo                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of  Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $46,431 $389 $- $46,820 $(25,649) $21,171
Long-term Risk Management Assets  20,948  -  -  20,948  (4,000)  16,948
Total Assets  67,379  389  -  67,768  (29,649)  38,119
                    
Current Risk Management Liabilities  37,010  313  -  37,323  (28,431)  8,892
Long-term Risk Management Liabilities   14,452  -  -  14,452  (4,211)  10,241
Total Liabilities  51,462  313  -  51,775  (32,642)  19,133
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $15,917 $76 $- $15,993 $2,993 $18,986
                    
Fair Value of Derivative Instruments
December 31, 2012
                    
APCo                  
                 
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of  Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $127,645 $338 $- $127,983 $(97,023) $30,960
Long-term Risk Management Assets  60,498  215  -  60,713  (26,353)  34,360
Total Assets  188,143  553  -  188,696  (123,376)  65,320
                    
Current Risk Management Liabilities  119,430  1,182  -  120,612  (103,914)  16,698
Long-term Risk Management Liabilities   47,281  424  -  47,705  (29,229)  18,476
Total Liabilities  166,711  1,606  -  168,317  (133,143)  35,174
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $21,432 $(1,053) $- $20,379 $9,767 $30,146

(a) Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b) Amounts include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging."

(c) There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2013
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,019 $ 10,624 $ 4,886 $ 371 $ 647
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (4)   (26)   (5,795)   2,956   424
 Regulatory Liabilities (a)   (338)   (9,062)   2,920   999   1,462
 Total Gain (Loss) on Risk Management               
  Contracts $ 1,677 $ 1,536 $ 2,011 $ 4,326 $ 2,533
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2012
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ (1,149) $ 11,437 $ 11,978 $ 163 $ 398
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (7,835)   (9,204)   (14,104)   (5,304)   (6,274)
 Regulatory Liabilities (a)   7,314   (889)   -   (19)   (13)
 Total Gain (Loss) on Risk Management               
  Contracts $ (1,670) $ 1,344 $ (2,126) $ (5,160) $ (5,889)
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2011
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,843 $ 12,786 $ 27,292 $ 297 $ 547
 Sales to AEP Affiliates   154   92   196   3   4
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   (2)   -   -
 Regulatory Assets (a)   373   (1,470)   (17,928)   (1,421)   (1,709)
 Regulatory Liabilities (a)   2,552   (5,178)   (105)   708   (118)
 Total Gain (Loss) on Risk Management               
  Contracts $ 5,922 $ 6,230 $ 9,453 $ (413) $ (1,276)

(a)       Represents realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2013
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 363 $ - $ 287 $ - $ 94 $ 3,090
 I&M   216   -   194   -   46   (15,976)
 OPCo   162   -   -   -   105   6,974
 PSO   84   -   -   -   57   5,701
 SWEPCo   97   -   -   -   66   (13,304)

    Expected to be Reclassified to   
    Net Income During the Next   
    Twelve Months   
        Maximum Term for
      Interest Rate Exposure to
      and Foreign  Variability of Future
 Company Commodity Currency Cash Flows
    (in thousands) (in months)
 APCo $ 94 $ (806)   12
 I&M   46   (1,568)   12
 OPCo   105   1,363   12
 PSO   57   759   12
 SWEPCo   66   (2,267)   12

 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2012
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 302 $ - $ 1,355 $ - $ (644) $ 2,077
 I&M   200   -   931   19,524   (446)   (19,647)
 OPCo   416   -   1,903   -   (912)   8,095
 PSO   25   -   -   -   21   6,460
 SWEPCo   24   -   -   -   22   (15,571)

    Expected to be Reclassified to 
    Net Income During the Next 
    Twelve Months 
      Interest Rate 
      and Foreign  
 Company Commodity Currency 
    (in thousands) 
 APCo $ (507) $ (1,013) 
 I&M   (355)   (1,600) 
 OPCo   (720)   1,359 
 PSO   21   759 
 SWEPCo   22   (2,267) 

       (a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

 

Collateral Required Under Various Triggering Events
    December 31, 2013
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 575 $ 2,747 $ 2,539
 I&M   390   1,863   1,722
 OPCo   349   -   -
 PSO   -   2,930   410
 SWEPCo   -   713   519

    December 31, 2012
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit  Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 2,159 $ 3,699 $ 3,510
 I&M   1,483   2,540   2,411
 OPCo   3,034   5,198   4,933
 PSO   -   1,509   1,429
 SWEPCo   -   1,778   1,683
Liabilities Subject to Cross Default Provisions
    December 31, 2013
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 19,648 $ - $ 18,568
 I&M   13,326   -   12,594
 OPCo   -   -   -
 PSO   3   -   3
 SWEPCo   3   -   3
            
    December 31, 2012
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 49,465 $ 1,822 $ 30,160
 I&M   53,499   1,252   40,240
 OPCo   69,516   2,561   42,386
 PSO   -   -   -
 SWEPCo   -   -   -
Indiana Michigan Power Co [Member]
 
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
 December 31, 2013
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   48,995   33,231   34,843   13,469   17,057
 Coal Tons   31   3,389   -   1,013   1,692
 Natural Gas MMBtus   2,477   1,680   -   -   -
 Heating Oil and                 
  Gasoline Gallons   1,089   521   1,108   614   699
 Interest Rate USD $ 12,720 $ 8,627 $ - $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ - $ - $ - $ -
                    
 Notional Volume of Derivative Instruments
 December 31, 2012
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   94,059   64,791   132,188   -   -
 Coal Tons   1,401   2,711   3,033   1,980   1,312
 Natural Gas MMBtus   10,077   6,922   14,163   -   -
 Heating Oil and                 
  Gasoline Gallons   1,050   532   1,260   616   585
 Interest Rate USD $ 24,146 $ 16,584 $ 33,934 $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ 200,000 $ - $ - $ -
Cash Collateral Netting
    December 31,
    2013 2012
    Cash Collateral Cash Collateral Cash Collateral Cash Collateral
    Received Paid Received Paid
    Netted Against Netted Against Netted Against Netted Against
    Risk Management Risk Management Risk Management Risk Management
 Company Assets Liabilities Assets Liabilities
    (in thousands)
 APCo $ - $ 2,993 $ 1,262 $ 11,029
 I&M   -   2,030   867   7,576
 OPCo   -   -   1,774   15,500
 PSO   -   1   -   -
 SWEPCo   -   3   -   -
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
                    
I&M                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $33,229 $234 $- $33,463 $(18,075) $15,388
Long-term Risk Management Assets  14,208  -  -  14,208  (2,713)  11,495
Total Assets  47,437  234  -  47,671  (20,788)  26,883
                    
Current Risk Management Liabilities  26,779  212  -  26,991  (19,962)  7,029
Long-term Risk Management Liabilities   9,802  -  -  9,802  (2,856)  6,946
Total Liabilities  36,581  212  -  36,793  (22,818)  13,975
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $10,856 $22 $- $10,878 $2,030 $12,908
                    
Fair Value of Derivative Instruments
December 31, 2012
                    
I&M                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $93,268 $220 $- $93,488 $(66,514) $26,974
Long-term Risk Management Assets  41,553  148  -  41,701  (18,132)  23,569
Total Assets  134,821  368  -  135,189  (84,646)  50,543
                    
Current Risk Management Liabilities  82,433  807  19,524  102,764  (71,247)  31,517
Long-term Risk Management Liabilities   33,714  292  -  34,006  (20,108)  13,898
Total Liabilities  116,147  1,099  19,524  136,770  (91,355)  45,415
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $18,674 $(731) $(19,524) $(1,581) $6,709 $5,128

(a) Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b) Amounts include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging."

(c) There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2013
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,019 $ 10,624 $ 4,886 $ 371 $ 647
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (4)   (26)   (5,795)   2,956   424
 Regulatory Liabilities (a)   (338)   (9,062)   2,920   999   1,462
 Total Gain (Loss) on Risk Management               
  Contracts $ 1,677 $ 1,536 $ 2,011 $ 4,326 $ 2,533
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2012
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ (1,149) $ 11,437 $ 11,978 $ 163 $ 398
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (7,835)   (9,204)   (14,104)   (5,304)   (6,274)
 Regulatory Liabilities (a)   7,314   (889)   -   (19)   (13)
 Total Gain (Loss) on Risk Management               
  Contracts $ (1,670) $ 1,344 $ (2,126) $ (5,160) $ (5,889)
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2011
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,843 $ 12,786 $ 27,292 $ 297 $ 547
 Sales to AEP Affiliates   154   92   196   3   4
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   (2)   -   -
 Regulatory Assets (a)   373   (1,470)   (17,928)   (1,421)   (1,709)
 Regulatory Liabilities (a)   2,552   (5,178)   (105)   708   (118)
 Total Gain (Loss) on Risk Management               
  Contracts $ 5,922 $ 6,230 $ 9,453 $ (413) $ (1,276)

(a)       Represents realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2013
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 363 $ - $ 287 $ - $ 94 $ 3,090
 I&M   216   -   194   -   46   (15,976)
 OPCo   162   -   -   -   105   6,974
 PSO   84   -   -   -   57   5,701
 SWEPCo   97   -   -   -   66   (13,304)

    Expected to be Reclassified to   
    Net Income During the Next   
    Twelve Months   
        Maximum Term for
      Interest Rate Exposure to
      and Foreign  Variability of Future
 Company Commodity Currency Cash Flows
    (in thousands) (in months)
 APCo $ 94 $ (806)   12
 I&M   46   (1,568)   12
 OPCo   105   1,363   12
 PSO   57   759   12
 SWEPCo   66   (2,267)   12

 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2012
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 302 $ - $ 1,355 $ - $ (644) $ 2,077
 I&M   200   -   931   19,524   (446)   (19,647)
 OPCo   416   -   1,903   -   (912)   8,095
 PSO   25   -   -   -   21   6,460
 SWEPCo   24   -   -   -   22   (15,571)

    Expected to be Reclassified to 
    Net Income During the Next 
    Twelve Months 
      Interest Rate 
      and Foreign  
 Company Commodity Currency 
    (in thousands) 
 APCo $ (507) $ (1,013) 
 I&M   (355)   (1,600) 
 OPCo   (720)   1,359 
 PSO   21   759 
 SWEPCo   22   (2,267) 

       (a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

 

Collateral Required Under Various Triggering Events
    December 31, 2013
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 575 $ 2,747 $ 2,539
 I&M   390   1,863   1,722
 OPCo   349   -   -
 PSO   -   2,930   410
 SWEPCo   -   713   519

    December 31, 2012
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit  Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 2,159 $ 3,699 $ 3,510
 I&M   1,483   2,540   2,411
 OPCo   3,034   5,198   4,933
 PSO   -   1,509   1,429
 SWEPCo   -   1,778   1,683
Liabilities Subject to Cross Default Provisions
    December 31, 2013
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 19,648 $ - $ 18,568
 I&M   13,326   -   12,594
 OPCo   -   -   -
 PSO   3   -   3
 SWEPCo   3   -   3
            
    December 31, 2012
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 49,465 $ 1,822 $ 30,160
 I&M   53,499   1,252   40,240
 OPCo   69,516   2,561   42,386
 PSO   -   -   -
 SWEPCo   -   -   -
Ohio Power Co [Member]
 
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
 December 31, 2013
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   48,995   33,231   34,843   13,469   17,057
 Coal Tons   31   3,389   -   1,013   1,692
 Natural Gas MMBtus   2,477   1,680   -   -   -
 Heating Oil and                 
  Gasoline Gallons   1,089   521   1,108   614   699
 Interest Rate USD $ 12,720 $ 8,627 $ - $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ - $ - $ - $ -
                    
 Notional Volume of Derivative Instruments
 December 31, 2012
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   94,059   64,791   132,188   -   -
 Coal Tons   1,401   2,711   3,033   1,980   1,312
 Natural Gas MMBtus   10,077   6,922   14,163   -   -
 Heating Oil and                 
  Gasoline Gallons   1,050   532   1,260   616   585
 Interest Rate USD $ 24,146 $ 16,584 $ 33,934 $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ 200,000 $ - $ - $ -
Cash Collateral Netting
    December 31,
    2013 2012
    Cash Collateral Cash Collateral Cash Collateral Cash Collateral
    Received Paid Received Paid
    Netted Against Netted Against Netted Against Netted Against
    Risk Management Risk Management Risk Management Risk Management
 Company Assets Liabilities Assets Liabilities
    (in thousands)
 APCo $ - $ 2,993 $ 1,262 $ 11,029
 I&M   -   2,030   867   7,576
 OPCo   -   -   1,774   15,500
 PSO   -   1   -   -
 SWEPCo   -   3   -   -
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
                    
OPCo                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $3,269 $162 $- $3,431 $(349) $3,082
Long-term Risk Management Assets  -  -  -  -  -  -
Total Assets  3,269  162  -  3,431  (349)  3,082
                    
Current Risk Management Liabilities  349  -  -  349  (349)  -
Long-term Risk Management Liabilities   -  -  -  -  -  -
Total Liabilities  349  -  -  349  (349)  -
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $2,920 $162 $- $3,082 $- $3,082
                    
Fair Value of Derivative Instruments
December 31, 2012
                    
OPCo                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the  Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $183,064 $464 $- $183,528 $(139,215) $44,313
Long-term Risk Management Assets  85,023  303  -  85,326  (37,038)  48,288
Total Assets  268,087  767  -  268,854  (176,253)  92,601
                    
Current Risk Management Liabilities  171,397  1,658  -  173,055  (148,900)  24,155
Long-term Risk Management Liabilities   66,448  596  -  67,044  (41,079)  25,965
Total Liabilities  237,845  2,254  -  240,099  (189,979)  50,120
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $30,242 $(1,487) $- $28,755 $13,726 $42,481

(a) Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b) Amounts include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging."

(c) There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2013
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,019 $ 10,624 $ 4,886 $ 371 $ 647
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (4)   (26)   (5,795)   2,956   424
 Regulatory Liabilities (a)   (338)   (9,062)   2,920   999   1,462
 Total Gain (Loss) on Risk Management               
  Contracts $ 1,677 $ 1,536 $ 2,011 $ 4,326 $ 2,533
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2012
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ (1,149) $ 11,437 $ 11,978 $ 163 $ 398
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (7,835)   (9,204)   (14,104)   (5,304)   (6,274)
 Regulatory Liabilities (a)   7,314   (889)   -   (19)   (13)
 Total Gain (Loss) on Risk Management               
  Contracts $ (1,670) $ 1,344 $ (2,126) $ (5,160) $ (5,889)
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2011
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,843 $ 12,786 $ 27,292 $ 297 $ 547
 Sales to AEP Affiliates   154   92   196   3   4
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   (2)   -   -
 Regulatory Assets (a)   373   (1,470)   (17,928)   (1,421)   (1,709)
 Regulatory Liabilities (a)   2,552   (5,178)   (105)   708   (118)
 Total Gain (Loss) on Risk Management               
  Contracts $ 5,922 $ 6,230 $ 9,453 $ (413) $ (1,276)

(a)       Represents realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2013
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 363 $ - $ 287 $ - $ 94 $ 3,090
 I&M   216   -   194   -   46   (15,976)
 OPCo   162   -   -   -   105   6,974
 PSO   84   -   -   -   57   5,701
 SWEPCo   97   -   -   -   66   (13,304)

    Expected to be Reclassified to   
    Net Income During the Next   
    Twelve Months   
        Maximum Term for
      Interest Rate Exposure to
      and Foreign  Variability of Future
 Company Commodity Currency Cash Flows
    (in thousands) (in months)
 APCo $ 94 $ (806)   12
 I&M   46   (1,568)   12
 OPCo   105   1,363   12
 PSO   57   759   12
 SWEPCo   66   (2,267)   12

 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2012
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 302 $ - $ 1,355 $ - $ (644) $ 2,077
 I&M   200   -   931   19,524   (446)   (19,647)
 OPCo   416   -   1,903   -   (912)   8,095
 PSO   25   -   -   -   21   6,460
 SWEPCo   24   -   -   -   22   (15,571)

    Expected to be Reclassified to 
    Net Income During the Next 
    Twelve Months 
      Interest Rate 
      and Foreign  
 Company Commodity Currency 
    (in thousands) 
 APCo $ (507) $ (1,013) 
 I&M   (355)   (1,600) 
 OPCo   (720)   1,359 
 PSO   21   759 
 SWEPCo   22   (2,267) 

       (a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

 

Collateral Required Under Various Triggering Events
    December 31, 2013
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 575 $ 2,747 $ 2,539
 I&M   390   1,863   1,722
 OPCo   349   -   -
 PSO   -   2,930   410
 SWEPCo   -   713   519

    December 31, 2012
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit  Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 2,159 $ 3,699 $ 3,510
 I&M   1,483   2,540   2,411
 OPCo   3,034   5,198   4,933
 PSO   -   1,509   1,429
 SWEPCo   -   1,778   1,683
Liabilities Subject to Cross Default Provisions
    December 31, 2013
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 19,648 $ - $ 18,568
 I&M   13,326   -   12,594
 OPCo   -   -   -
 PSO   3   -   3
 SWEPCo   3   -   3
            
    December 31, 2012
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 49,465 $ 1,822 $ 30,160
 I&M   53,499   1,252   40,240
 OPCo   69,516   2,561   42,386
 PSO   -   -   -
 SWEPCo   -   -   -
Public Service Co of Oklahoma [Member]
 
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
 December 31, 2013
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   48,995   33,231   34,843   13,469   17,057
 Coal Tons   31   3,389   -   1,013   1,692
 Natural Gas MMBtus   2,477   1,680   -   -   -
 Heating Oil and                 
  Gasoline Gallons   1,089   521   1,108   614   699
 Interest Rate USD $ 12,720 $ 8,627 $ - $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ - $ - $ - $ -
                    
 Notional Volume of Derivative Instruments
 December 31, 2012
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   94,059   64,791   132,188   -   -
 Coal Tons   1,401   2,711   3,033   1,980   1,312
 Natural Gas MMBtus   10,077   6,922   14,163   -   -
 Heating Oil and                 
  Gasoline Gallons   1,050   532   1,260   616   585
 Interest Rate USD $ 24,146 $ 16,584 $ 33,934 $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ 200,000 $ - $ - $ -
Cash Collateral Netting
    December 31,
    2013 2012
    Cash Collateral Cash Collateral Cash Collateral Cash Collateral
    Received Paid Received Paid
    Netted Against Netted Against Netted Against Netted Against
    Risk Management Risk Management Risk Management Risk Management
 Company Assets Liabilities Assets Liabilities
    (in thousands)
 APCo $ - $ 2,993 $ 1,262 $ 11,029
 I&M   -   2,030   867   7,576
 OPCo   -   -   1,774   15,500
 PSO   -   1   -   -
 SWEPCo   -   3   -   -
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
                    
PSO                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $1,078 $84 $- $1,162 $5 $1,167
Long-term Risk Management Assets  -  -  -  -  -  -
Total Assets  1,078  84  -  1,162  5  1,167
                    
Current Risk Management Liabilities  81  -  -  81  4  85
Long-term Risk Management Liabilities   -  -  -  -  -  -
Total Liabilities  81  -  -  81  4  85
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $997 $84 $- $1,081 $1 $1,082
                    
Fair Value of Derivative Instruments
December 31, 2012
                    
PSO                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $1,657 $42 $- $1,699 $(1,190) $509
Long-term Risk Management Assets  -  -  -  -  31  31
Total Assets  1,657  42  -  1,699  (1,159)  540
                    
Current Risk Management Liabilities  7,021  17  -  7,038  (1,190)  5,848
Long-term Risk Management Liabilities   -  -  -  -  31  31
Total Liabilities  7,021  17  -  7,038  (1,159)  5,879
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $(5,364) $25 $- $(5,339) $- $(5,339)

(a) Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b) Amounts include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging."

(c) There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2013
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,019 $ 10,624 $ 4,886 $ 371 $ 647
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (4)   (26)   (5,795)   2,956   424
 Regulatory Liabilities (a)   (338)   (9,062)   2,920   999   1,462
 Total Gain (Loss) on Risk Management               
  Contracts $ 1,677 $ 1,536 $ 2,011 $ 4,326 $ 2,533
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2012
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ (1,149) $ 11,437 $ 11,978 $ 163 $ 398
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (7,835)   (9,204)   (14,104)   (5,304)   (6,274)
 Regulatory Liabilities (a)   7,314   (889)   -   (19)   (13)
 Total Gain (Loss) on Risk Management               
  Contracts $ (1,670) $ 1,344 $ (2,126) $ (5,160) $ (5,889)
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2011
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,843 $ 12,786 $ 27,292 $ 297 $ 547
 Sales to AEP Affiliates   154   92   196   3   4
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   (2)   -   -
 Regulatory Assets (a)   373   (1,470)   (17,928)   (1,421)   (1,709)
 Regulatory Liabilities (a)   2,552   (5,178)   (105)   708   (118)
 Total Gain (Loss) on Risk Management               
  Contracts $ 5,922 $ 6,230 $ 9,453 $ (413) $ (1,276)

(a)       Represents realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2013
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 363 $ - $ 287 $ - $ 94 $ 3,090
 I&M   216   -   194   -   46   (15,976)
 OPCo   162   -   -   -   105   6,974
 PSO   84   -   -   -   57   5,701
 SWEPCo   97   -   -   -   66   (13,304)

    Expected to be Reclassified to   
    Net Income During the Next   
    Twelve Months   
        Maximum Term for
      Interest Rate Exposure to
      and Foreign  Variability of Future
 Company Commodity Currency Cash Flows
    (in thousands) (in months)
 APCo $ 94 $ (806)   12
 I&M   46   (1,568)   12
 OPCo   105   1,363   12
 PSO   57   759   12
 SWEPCo   66   (2,267)   12

 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2012
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 302 $ - $ 1,355 $ - $ (644) $ 2,077
 I&M   200   -   931   19,524   (446)   (19,647)
 OPCo   416   -   1,903   -   (912)   8,095
 PSO   25   -   -   -   21   6,460
 SWEPCo   24   -   -   -   22   (15,571)

    Expected to be Reclassified to 
    Net Income During the Next 
    Twelve Months 
      Interest Rate 
      and Foreign  
 Company Commodity Currency 
    (in thousands) 
 APCo $ (507) $ (1,013) 
 I&M   (355)   (1,600) 
 OPCo   (720)   1,359 
 PSO   21   759 
 SWEPCo   22   (2,267) 

       (a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

 

Collateral Required Under Various Triggering Events
    December 31, 2013
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 575 $ 2,747 $ 2,539
 I&M   390   1,863   1,722
 OPCo   349   -   -
 PSO   -   2,930   410
 SWEPCo   -   713   519

    December 31, 2012
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit  Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 2,159 $ 3,699 $ 3,510
 I&M   1,483   2,540   2,411
 OPCo   3,034   5,198   4,933
 PSO   -   1,509   1,429
 SWEPCo   -   1,778   1,683
Liabilities Subject to Cross Default Provisions
    December 31, 2013
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 19,648 $ - $ 18,568
 I&M   13,326   -   12,594
 OPCo   -   -   -
 PSO   3   -   3
 SWEPCo   3   -   3
            
    December 31, 2012
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 49,465 $ 1,822 $ 30,160
 I&M   53,499   1,252   40,240
 OPCo   69,516   2,561   42,386
 PSO   -   -   -
 SWEPCo   -   -   -
Southwestern Electric Power Co [Member]
 
Notional Volume of Derivative Instruments
 Notional Volume of Derivative Instruments
 December 31, 2013
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   48,995   33,231   34,843   13,469   17,057
 Coal Tons   31   3,389   -   1,013   1,692
 Natural Gas MMBtus   2,477   1,680   -   -   -
 Heating Oil and                 
  Gasoline Gallons   1,089   521   1,108   614   699
 Interest Rate USD $ 12,720 $ 8,627 $ - $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ - $ - $ - $ -
                    
 Notional Volume of Derivative Instruments
 December 31, 2012
                    
 Primary Risk Unit of               
 Exposure Measure APCo I&M OPCo PSO SWEPCo
                    
      (in thousands)
Commodity:                 
 Power MWhs   94,059   64,791   132,188   -   -
 Coal Tons   1,401   2,711   3,033   1,980   1,312
 Natural Gas MMBtus   10,077   6,922   14,163   -   -
 Heating Oil and                 
  Gasoline Gallons   1,050   532   1,260   616   585
 Interest Rate USD $ 24,146 $ 16,584 $ 33,934 $ - $ -
                    
Interest Rate and                 
 Foreign Currency USD $ - $ 200,000 $ - $ - $ -
Cash Collateral Netting
    December 31,
    2013 2012
    Cash Collateral Cash Collateral Cash Collateral Cash Collateral
    Received Paid Received Paid
    Netted Against Netted Against Netted Against Netted Against
    Risk Management Risk Management Risk Management Risk Management
 Company Assets Liabilities Assets Liabilities
    (in thousands)
 APCo $ - $ 2,993 $ 1,262 $ 11,029
 I&M   -   2,030   867   7,576
 OPCo   -   -   1,774   15,500
 PSO   -   1   -   -
 SWEPCo   -   3   -   -
Fair Value of Derivative Instruments
Fair Value of Derivative Instruments
December 31, 2013
                    
SWEPCo                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $1,233 $97 $- $1,330 $(151) $1,179
Long-term Risk Management Assets  -  -  -  -  -  -
Total Assets  1,233  97  -  1,330  (151)  1,179
                    
Current Risk Management Liabilities  154  -  -  154  (154)  -
Long-term Risk Management Liabilities   -  -  -  -  -  -
Total Liabilities  154  -  -  154  (154)  -
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $1,079 $97 $- $1,176 $3 $1,179
                    
Fair Value of Derivative Instruments
December 31, 2012
                    
SWEPCo                  
   Risk     Gross Amounts Gross Net Amounts of
   Management     of Risk Amounts Assets/Liabilities
   Contracts Hedging Contracts Management Offset in the Presented in the
        Interest Rate Assets/ Statement of Statement of
       and Foreign Liabilities Financial Financial
Balance Sheet Location Commodity (a) Commodity (a) Currency (a) Recognized Position (b) Position (c)
                    
   (in thousands)
Current Risk Management Assets $2,804 $41 $- $2,845 $(2,150) $695
Long-term Risk Management Assets  -  -  -  -  -  -
Total Assets  2,804  41  -  2,845  (2,150)  695
                    
Current Risk Management Liabilities  3,261  17  -  3,278  (2,150)  1,128
Long-term Risk Management Liabilities   -  -  -  -  -  -
Total Liabilities  3,261  17  -  3,278  (2,150)  1,128
                    
Total MTM Derivative Contract Net                  
 Assets (Liabilities) $(457) $24 $- $(433) $- $(433)

(a) Derivative instruments within these categories are reported gross. These instruments are subject to master netting agreements and are presented on the balance sheets on a net basis in accordance with the accounting guidance for "Derivatives and Hedging."

(b) Amounts include counterparty netting of risk management and hedging contracts and associated cash collateral in accordance with the accounting guidance for "Derivatives and Hedging."

(c) There are no derivative contracts subject to a master netting arrangement or similar agreement which are not offset in the statement of financial position.

Amount of Gain (Loss) Recognized on Risk Management Contracts
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2013
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,019 $ 10,624 $ 4,886 $ 371 $ 647
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (4)   (26)   (5,795)   2,956   424
 Regulatory Liabilities (a)   (338)   (9,062)   2,920   999   1,462
 Total Gain (Loss) on Risk Management               
  Contracts $ 1,677 $ 1,536 $ 2,011 $ 4,326 $ 2,533
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2012
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ (1,149) $ 11,437 $ 11,978 $ 163 $ 398
 Sales to AEP Affiliates   -   -   -   -   -
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   -   -   -
 Regulatory Assets (a)   (7,835)   (9,204)   (14,104)   (5,304)   (6,274)
 Regulatory Liabilities (a)   7,314   (889)   -   (19)   (13)
 Total Gain (Loss) on Risk Management               
  Contracts $ (1,670) $ 1,344 $ (2,126) $ (5,160) $ (5,889)
                  
 Amount of Gain (Loss) Recognized on
 Risk Management Contracts
  Year Ended December 31, 2011
                  
 Location of Gain (Loss) APCo I&M OPCo PSO SWEPCo
    (in thousands)
 Electric Generation, Transmission and               
  Distribution Revenues $ 2,843 $ 12,786 $ 27,292 $ 297 $ 547
 Sales to AEP Affiliates   154   92   196   3   4
 Fuel and Other Consumables Used for               
  Electric Generation   -   -   (2)   -   -
 Regulatory Assets (a)   373   (1,470)   (17,928)   (1,421)   (1,709)
 Regulatory Liabilities (a)   2,552   (5,178)   (105)   708   (118)
 Total Gain (Loss) on Risk Management               
  Contracts $ 5,922 $ 6,230 $ 9,453 $ (413) $ (1,276)

(a)       Represents realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.

Impact of Cash Flow Hedges on the Balance Sheet
 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2013
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 363 $ - $ 287 $ - $ 94 $ 3,090
 I&M   216   -   194   -   46   (15,976)
 OPCo   162   -   -   -   105   6,974
 PSO   84   -   -   -   57   5,701
 SWEPCo   97   -   -   -   66   (13,304)

    Expected to be Reclassified to   
    Net Income During the Next   
    Twelve Months   
        Maximum Term for
      Interest Rate Exposure to
      and Foreign  Variability of Future
 Company Commodity Currency Cash Flows
    (in thousands) (in months)
 APCo $ 94 $ (806)   12
 I&M   46   (1,568)   12
 OPCo   105   1,363   12
 PSO   57   759   12
 SWEPCo   66   (2,267)   12

 Impact of Cash Flow Hedges on the Registrant Subsidiaries’
 Balance Sheets
 December 31, 2012
  
    Hedging Assets (a) Hedging Liabilities (a) AOCI Gain (Loss) Net of Tax
      Interest Rate   Interest Rate   Interest Rate
      and Foreign    and Foreign    and Foreign
 Company Commodity Currency Commodity Currency Commodity Currency
    (in thousands)
 APCo $ 302 $ - $ 1,355 $ - $ (644) $ 2,077
 I&M   200   -   931   19,524   (446)   (19,647)
 OPCo   416   -   1,903   -   (912)   8,095
 PSO   25   -   -   -   21   6,460
 SWEPCo   24   -   -   -   22   (15,571)

    Expected to be Reclassified to 
    Net Income During the Next 
    Twelve Months 
      Interest Rate 
      and Foreign  
 Company Commodity Currency 
    (in thousands) 
 APCo $ (507) $ (1,013) 
 I&M   (355)   (1,600) 
 OPCo   (720)   1,359 
 PSO   21   759 
 SWEPCo   22   (2,267) 

       (a)       Hedging Assets and Hedging Liabilities are included in Risk Management Assets and Liabilities on the balance sheets.

 

Collateral Required Under Various Triggering Events
    December 31, 2013
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 575 $ 2,747 $ 2,539
 I&M   390   1,863   1,722
 OPCo   349   -   -
 PSO   -   2,930   410
 SWEPCo   -   713   519

    December 31, 2012
    Liabilities for Amount of Collateral the Amount
    Derivative Contracts Registrant Subsidiaries Attributable to
    with Credit  Would Have Been RTO and ISO
 Company Downgrade Triggers Required to Post Activities
    (in thousands)
 APCo $ 2,159 $ 3,699 $ 3,510
 I&M   1,483   2,540   2,411
 OPCo   3,034   5,198   4,933
 PSO   -   1,509   1,429
 SWEPCo   -   1,778   1,683
Liabilities Subject to Cross Default Provisions
    December 31, 2013
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 19,648 $ - $ 18,568
 I&M   13,326   -   12,594
 OPCo   -   -   -
 PSO   3   -   3
 SWEPCo   3   -   3
            
    December 31, 2012
    Liabilities for   Additional
    Contracts with Cross   Settlement
    Default Provisions   Liability if Cross
    Prior to Contractual Amount of Cash Default Provision
 Company Netting Arrangements Collateral Posted is Triggered
    (in thousands)
 APCo $ 49,465 $ 1,822 $ 30,160
 I&M   53,499   1,252   40,240
 OPCo   69,516   2,561   42,386
 PSO   -   -   -
 SWEPCo   -   -   -