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Accounts Receivable, Net
 9 Months Ended
Jun. 30, 2011
Accounts Receivables, Net [Abstract]  
Accounts Receivable, Net

Accounts receivable primarily consist of amounts due from customers for power sales.  The table below summarizes the types and amounts of TVA’s accounts receivable:

Accounts Receivable, Net
 
 
   
At June 30, 2011
  
At September 30, 2010
 
        
Power receivables
      
  Billed
 $1,473  $597 
  Unbilled
  21   1,004 
    Total power receivables
  1,494   1,601 
          
Other receivables
  55   40 
Allowance for uncollectible accounts
  (1)  (2)
          
    Accounts receivable, net
 $1,548  $1,639 
 
 
           The $983 million decrease in unbilled power receivables and the $876 million increase in billed receivables are primarily due to the implementation of a new wholesale base rate structure for the majority of TVA’s customers on April 1, 2011.  Under the previous end-use billing structure, billed sales were reported a month in arrears.  Under the new wholesale base rate structure, customers are billed in the current month.