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Jointly Owned Facilities
 12 Months Ended
Dec. 31, 2011
PPL Corp [Member]
  
Jointly Owned Facilities [Line Items]  
Jointly Owned Facilities

14. Jointly Owned Facilities

 

(PPL, PPL Energy Supply, LKE, LG&E and KU)

 

At December 31, 2011 and 2010, the Balance Sheets reflect the owned interests in the facilities listed below.

                Construction
     Ownership    Other Accumulated Work
     Interest Electric Plant Property Depreciation in Progress
PPL               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
  Trimble County Units 1 & 2  75.00%   1,245      61   35
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
  Trimble County Units 1 & 2  75.00%   352      10   907
 Merrill Creek Reservoir  8.37%    $ 22   15   

PPL Energy Supply               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
 Merrill Creek Reservoir  8.37%    $ 22   15   

LKE                
 December 31, 2011               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 297    $ 19 $ 11
  Trimble County Unit 2  75.00%   948      42   24
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 288    $ 9 $ 17
  Trimble County Unit 2  75.00%   64      1   890
                  
LG&E               
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 64    $ 4 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      3   
  Trimble County Units 5-6 (a)  29.00%   31      1   
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44      2   5
  Trimble County Unit 1   75.00%   297      19   11
  Trimble County Unit 2   14.25%   190      7   7
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 63    $ 1 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      2   1
  Trimble County Units 5-6 (a)  29.00%   26         2
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44         4
  Trimble County Unit 1   75.00%   288      9   17
  Trimble County Unit 2   14.25%   2         187
                  
KU                
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 109    $ 6 $ 5
  E.W. Brown Units 6-7 (a)  62.00%   64      5   
  Trimble County Units 5-6 (a)  71.00%   66      2   4
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39      2   4
  Trimble County Unit 2   60.75%   758      35   17
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 107    $ 1 $ 2
  E.W. Brown Units 6-7 (a)  62.00%   64      2   
  Trimble County Units 5-6 (a)  71.00%   64      1   3
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39         4
  Trimble County Unit 2   60.75%   62      1   703

(a)       These jointly owned facilities at LG&E and KU are entirely owned by LKE and thus are not jointly owned at the LKE or PPL level.

 

In addition to the interests mentioned above, PPL Montana has a 50% leasehold interest in Colstrip Units 1 and 2 and a 30% leasehold interest in Colstrip Unit 3 under operating leases. See Note 11 for additional information. At December 31, 2011 and 2010, NorthWestern owned a 30% leasehold interest in Colstrip Unit 4. PPL Montana and NorthWestern have a sharing agreement to govern each party's responsibilities regarding the operation of Colstrip Units 3 and 4, and each party is responsible for 15% of the respective operating and construction costs, regardless of whether a particular cost is specified to Colstrip Unit 3 or 4.

 

Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.

PPL Energy Supply [Member]
  
Jointly Owned Facilities [Line Items]  
Jointly Owned Facilities

14. Jointly Owned Facilities

 

(PPL, PPL Energy Supply, LKE, LG&E and KU)

 

At December 31, 2011 and 2010, the Balance Sheets reflect the owned interests in the facilities listed below.

                Construction
     Ownership    Other Accumulated Work
     Interest Electric Plant Property Depreciation in Progress
PPL               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
  Trimble County Units 1 & 2  75.00%   1,245      61   35
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
  Trimble County Units 1 & 2  75.00%   352      10   907
 Merrill Creek Reservoir  8.37%    $ 22   15   

PPL Energy Supply               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
 Merrill Creek Reservoir  8.37%    $ 22   15   

LKE                
 December 31, 2011               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 297    $ 19 $ 11
  Trimble County Unit 2  75.00%   948      42   24
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 288    $ 9 $ 17
  Trimble County Unit 2  75.00%   64      1   890
                  
LG&E               
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 64    $ 4 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      3   
  Trimble County Units 5-6 (a)  29.00%   31      1   
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44      2   5
  Trimble County Unit 1   75.00%   297      19   11
  Trimble County Unit 2   14.25%   190      7   7
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 63    $ 1 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      2   1
  Trimble County Units 5-6 (a)  29.00%   26         2
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44         4
  Trimble County Unit 1   75.00%   288      9   17
  Trimble County Unit 2   14.25%   2         187
                  
KU                
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 109    $ 6 $ 5
  E.W. Brown Units 6-7 (a)  62.00%   64      5   
  Trimble County Units 5-6 (a)  71.00%   66      2   4
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39      2   4
  Trimble County Unit 2   60.75%   758      35   17
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 107    $ 1 $ 2
  E.W. Brown Units 6-7 (a)  62.00%   64      2   
  Trimble County Units 5-6 (a)  71.00%   64      1   3
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39         4
  Trimble County Unit 2   60.75%   62      1   703

(a)       These jointly owned facilities at LG&E and KU are entirely owned by LKE and thus are not jointly owned at the LKE or PPL level.

 

In addition to the interests mentioned above, PPL Montana has a 50% leasehold interest in Colstrip Units 1 and 2 and a 30% leasehold interest in Colstrip Unit 3 under operating leases. See Note 11 for additional information. At December 31, 2011 and 2010, NorthWestern owned a 30% leasehold interest in Colstrip Unit 4. PPL Montana and NorthWestern have a sharing agreement to govern each party's responsibilities regarding the operation of Colstrip Units 3 and 4, and each party is responsible for 15% of the respective operating and construction costs, regardless of whether a particular cost is specified to Colstrip Unit 3 or 4.

 

Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.

LKE [Member]
  
Jointly Owned Facilities [Line Items]  
Jointly Owned Facilities

14. Jointly Owned Facilities

 

(PPL, PPL Energy Supply, LKE, LG&E and KU)

 

At December 31, 2011 and 2010, the Balance Sheets reflect the owned interests in the facilities listed below.

                Construction
     Ownership    Other Accumulated Work
     Interest Electric Plant Property Depreciation in Progress
PPL               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
  Trimble County Units 1 & 2  75.00%   1,245      61   35
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
  Trimble County Units 1 & 2  75.00%   352      10   907
 Merrill Creek Reservoir  8.37%    $ 22   15   

PPL Energy Supply               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
 Merrill Creek Reservoir  8.37%    $ 22   15   

LKE                
 December 31, 2011               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 297    $ 19 $ 11
  Trimble County Unit 2  75.00%   948      42   24
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 288    $ 9 $ 17
  Trimble County Unit 2  75.00%   64      1   890
                  
LG&E               
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 64    $ 4 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      3   
  Trimble County Units 5-6 (a)  29.00%   31      1   
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44      2   5
  Trimble County Unit 1   75.00%   297      19   11
  Trimble County Unit 2   14.25%   190      7   7
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 63    $ 1 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      2   1
  Trimble County Units 5-6 (a)  29.00%   26         2
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44         4
  Trimble County Unit 1   75.00%   288      9   17
  Trimble County Unit 2   14.25%   2         187
                  
KU                
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 109    $ 6 $ 5
  E.W. Brown Units 6-7 (a)  62.00%   64      5   
  Trimble County Units 5-6 (a)  71.00%   66      2   4
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39      2   4
  Trimble County Unit 2   60.75%   758      35   17
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 107    $ 1 $ 2
  E.W. Brown Units 6-7 (a)  62.00%   64      2   
  Trimble County Units 5-6 (a)  71.00%   64      1   3
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39         4
  Trimble County Unit 2   60.75%   62      1   703

(a)       These jointly owned facilities at LG&E and KU are entirely owned by LKE and thus are not jointly owned at the LKE or PPL level.

 

In addition to the interests mentioned above, PPL Montana has a 50% leasehold interest in Colstrip Units 1 and 2 and a 30% leasehold interest in Colstrip Unit 3 under operating leases. See Note 11 for additional information. At December 31, 2011 and 2010, NorthWestern owned a 30% leasehold interest in Colstrip Unit 4. PPL Montana and NorthWestern have a sharing agreement to govern each party's responsibilities regarding the operation of Colstrip Units 3 and 4, and each party is responsible for 15% of the respective operating and construction costs, regardless of whether a particular cost is specified to Colstrip Unit 3 or 4.

 

Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.

LGE [Member]
  
Jointly Owned Facilities [Line Items]  
Jointly Owned Facilities

14. Jointly Owned Facilities

 

(PPL, PPL Energy Supply, LKE, LG&E and KU)

 

At December 31, 2011 and 2010, the Balance Sheets reflect the owned interests in the facilities listed below.

                Construction
     Ownership    Other Accumulated Work
     Interest Electric Plant Property Depreciation in Progress
PPL               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
  Trimble County Units 1 & 2  75.00%   1,245      61   35
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
  Trimble County Units 1 & 2  75.00%   352      10   907
 Merrill Creek Reservoir  8.37%    $ 22   15   

PPL Energy Supply               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
 Merrill Creek Reservoir  8.37%    $ 22   15   

LKE                
 December 31, 2011               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 297    $ 19 $ 11
  Trimble County Unit 2  75.00%   948      42   24
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 288    $ 9 $ 17
  Trimble County Unit 2  75.00%   64      1   890
                  
LG&E               
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 64    $ 4 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      3   
  Trimble County Units 5-6 (a)  29.00%   31      1   
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44      2   5
  Trimble County Unit 1   75.00%   297      19   11
  Trimble County Unit 2   14.25%   190      7   7
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 63    $ 1 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      2   1
  Trimble County Units 5-6 (a)  29.00%   26         2
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44         4
  Trimble County Unit 1   75.00%   288      9   17
  Trimble County Unit 2   14.25%   2         187
                  
KU                
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 109    $ 6 $ 5
  E.W. Brown Units 6-7 (a)  62.00%   64      5   
  Trimble County Units 5-6 (a)  71.00%   66      2   4
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39      2   4
  Trimble County Unit 2   60.75%   758      35   17
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 107    $ 1 $ 2
  E.W. Brown Units 6-7 (a)  62.00%   64      2   
  Trimble County Units 5-6 (a)  71.00%   64      1   3
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39         4
  Trimble County Unit 2   60.75%   62      1   703

(a)       These jointly owned facilities at LG&E and KU are entirely owned by LKE and thus are not jointly owned at the LKE or PPL level.

 

In addition to the interests mentioned above, PPL Montana has a 50% leasehold interest in Colstrip Units 1 and 2 and a 30% leasehold interest in Colstrip Unit 3 under operating leases. See Note 11 for additional information. At December 31, 2011 and 2010, NorthWestern owned a 30% leasehold interest in Colstrip Unit 4. PPL Montana and NorthWestern have a sharing agreement to govern each party's responsibilities regarding the operation of Colstrip Units 3 and 4, and each party is responsible for 15% of the respective operating and construction costs, regardless of whether a particular cost is specified to Colstrip Unit 3 or 4.

 

Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.

KU [Member]
  
Jointly Owned Facilities [Line Items]  
Jointly Owned Facilities

14. Jointly Owned Facilities

 

(PPL, PPL Energy Supply, LKE, LG&E and KU)

 

At December 31, 2011 and 2010, the Balance Sheets reflect the owned interests in the facilities listed below.

                Construction
     Ownership    Other Accumulated Work
     Interest Electric Plant Property Depreciation in Progress
PPL               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
  Trimble County Units 1 & 2  75.00%   1,245      61   35
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
  Trimble County Units 1 & 2  75.00%   352      10   907
 Merrill Creek Reservoir  8.37%    $ 22   15   

PPL Energy Supply               
 December 31, 2011               
 Generating Plants               
  Susquehanna  90.00% $ 4,608    $ 3,496 $ 42
  Conemaugh  16.25%   233      115   14
  Keystone  12.34%   198      69   3
 Merrill Creek Reservoir  8.37%    $ 22   15   
                  
 December 31, 2010               
 Generating Plants               
  Susquehanna  90.00% $ 4,553    $ 3,487 $ 79
  Conemaugh  16.25%   213      106   11
  Keystone  12.34%   196      60   2
 Merrill Creek Reservoir  8.37%    $ 22   15   

LKE                
 December 31, 2011               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 297    $ 19 $ 11
  Trimble County Unit 2  75.00%   948      42   24
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Unit 1  75.00% $ 288    $ 9 $ 17
  Trimble County Unit 2  75.00%   64      1   890
                  
LG&E               
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 64    $ 4 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      3   
  Trimble County Units 5-6 (a)  29.00%   31      1   
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44      2   5
  Trimble County Unit 1   75.00%   297      19   11
  Trimble County Unit 2   14.25%   190      7   7
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  37.00% $ 63    $ 1 $ 1
  E.W. Brown Units 6-7 (a)  38.00%   39      2   1
  Trimble County Units 5-6 (a)  29.00%   26         2
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  53.00%   44         4
  Trimble County Unit 1   75.00%   288      9   17
  Trimble County Unit 2   14.25%   2         187
                  
KU                
 December 31, 2011               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 109    $ 6 $ 5
  E.W. Brown Units 6-7 (a)  62.00%   64      5   
  Trimble County Units 5-6 (a)  71.00%   66      2   4
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39      2   4
  Trimble County Unit 2   60.75%   758      35   17
                  
 December 31, 2010               
 Generating Plants               
  Trimble County Units 7-10 (a)  63.00% $ 107    $ 1 $ 2
  E.W. Brown Units 6-7 (a)  62.00%   64      2   
  Trimble County Units 5-6 (a)  71.00%   64      1   3
  Paddy's Run Unit 13 & E.W. Brown Unit 5 (a)  47.00%   39         4
  Trimble County Unit 2   60.75%   62      1   703

(a)       These jointly owned facilities at LG&E and KU are entirely owned by LKE and thus are not jointly owned at the LKE or PPL level.

 

In addition to the interests mentioned above, PPL Montana has a 50% leasehold interest in Colstrip Units 1 and 2 and a 30% leasehold interest in Colstrip Unit 3 under operating leases. See Note 11 for additional information. At December 31, 2011 and 2010, NorthWestern owned a 30% leasehold interest in Colstrip Unit 4. PPL Montana and NorthWestern have a sharing agreement to govern each party's responsibilities regarding the operation of Colstrip Units 3 and 4, and each party is responsible for 15% of the respective operating and construction costs, regardless of whether a particular cost is specified to Colstrip Unit 3 or 4.

 

Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.