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RELATED PARTY TRANSACTIONS (Tables)
9 Months Ended
Sep. 30, 2011
RELATED PARTY TRANSACTIONS 
Schedule of costs charged by related party


(unaudited)
  
Three months ended
September 30,
  
Nine months ended
September 30,
(millions of dollars)
  
2011
  
2010
  
2011
  
2010
Capital and operating costs charged by TransCanada's subsidiaries to:
    
 
              
     Great Lakes
     7.5       7.2       22.5       23.0  
     Northern Border
     7.9       4.6       22.1       19.2  
     GTN(a)
     8.8       -       14.6       -  
     Bison(a)
     3.1       -       5.1       -  
     North Baja
     0.8       1.5       2.6       3.0  
     Tuscarora
     1.2       0.8       3.2       2.7  
Impact on the Partnership's net income:
                                
     Great Lakes
     3.4       2.8       10.2       9.7  
     Northern Border
     3.7       2.9       10.3       9.5  
     GTN(a)
     8.4       -       13.9       -  
     Bison(a)
     2.0       -       2.8       -  
     North Baja
     0.8       0.8       2.4       2.2  
     Tuscarora
     1.1       0.8       3.1       2.6  
 
(a) Represents operations from May 3, 2011, date of acquisition, to September 30, 2011.
Schedule of amounts payable to related party for costs charged during the period

 
(unaudited)
    
September 30,
 
December 31,
(millions of dollars)
    
2011
  
2010
Amount payable to TransCanada's subsidiaries for costs charged in the period by:
    
     Great Lakes
    
                2.4
  
                3.0
     Northern Border
    
                3.6
  
                2.2
     GTN(a)
    
                2.4
  
                    -
     Bison(a)
    
                1.5
  
                    -
     North Baja
    
                0.3
  
                0.6
     Tuscarora
    
                0.6
  
                0.7
 
(a) Represents operations from May 3, 2011, date of acquisition, to September 30, 2011.