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Regulatory Matters
12 Months Ended
Dec. 31, 2012
Regulatory Assets and Liabilities, Other Disclosures [Abstract]  
Regulatory Matters [Text Block]
Regulatory Matters

(a) Regulatory Assets and Liabilities

The following is a list of regulatory assets/liabilities reflected on CenterPoint Houston’s Consolidated Balance Sheets as of December 31, 2011 and 2012:
 
December 31,
 
2011
 
2012
 
(in millions)
Securitized regulatory asset
$
2,289

 
$
3,545

True-up Settlement (1)
1,684

 

Unrecognized equity return (2)
(600
)
 
(553
)
Unamortized loss on reacquired debt
56

 
119

Pension and postretirement-related regulatory asset (3)
177

 
165

Other long-term regulatory assets (4)
120

 
112

Total regulatory assets
3,726

 
3,388

 
 
 
 
Estimated removal costs
339

 
346

Other long-term regulatory liabilities
102

 
127

Total regulatory liabilities
441

 
473

 
 
 
 
Total regulatory assets and liabilities, net
$
3,285

 
$
2,915

  ____________
(1)
In accordance with a final order from the Public Utility Commission of Texas (Texas Utility Commission), the true-up settlement as of December 31, 2012 was not earning a return. The regulatory asset was securitized in January 2012 as a result of the issuance of the transition bonds described below in Note 4(b).

(2)
As of December 31, 2012, CenterPoint Houston has not recognized an allowed equity return of $553 million because such return will be recognized as it is recovered in rates. During the years ended December 31, 2010, 2011 and 2012, CenterPoint Houston recognized approximately $16 million, $21 million and $47 million, respectively, of the allowed equity return.

(3)
CenterPoint Houston’s actuarially determined pension and other postemployment expense in excess of the amount being recovered through rates is being deferred for rate making purposes and was addressed in its 2010 rate application pursuant to Texas law.  Deferred pension and other postemployment expenses of $16 million and $14 million as of December 31, 2011 and 2012, respectively, were not earning a return.

(4)
Other regulatory assets that are not earning a return were not material as of December 31, 2011 and 2012.

(b) Resolution of True-Up Appeal

In March 2004, CenterPoint Houston filed a true-up application with the Texas Utility Commission, requesting recovery of $3.7 billion, excluding interest, as allowed under the Texas Electric Choice Plan. In December 2004, the Texas Utility Commission issued its final order (True-Up Order) allowing CenterPoint Houston to recover a true-up balance of approximately $2.3 billion, which included interest through August 31, 2004, and provided for adjustment of the amount to be recovered to include interest on the balance until recovery, along with the principal portion of additional excess mitigation credits returned to customers after August 31, 2004 and certain other adjustments. To reflect the impact of the True-Up Order, in 2004 and 2005, CenterPoint Houston recorded a net after-tax extraordinary loss of $947 million.

Various parties, including CenterPoint Houston, appealed the True-Up Order. These appeals were heard first by a district court in Travis County, Texas, then by the Texas Third Court of Appeals and finally by the Texas Supreme Court. In March 2011, the Texas Supreme Court issued a unanimous ruling on such appeals in which it affirmed in part and reversed in part the decision of the Texas Utility Commission. In June 2011, the Texas Supreme Court issued a final mandate remanding the case to the Texas Utility Commission for further proceedings (the Remand Proceeding).

In September 2011, CenterPoint Houston reached an agreement in principle with the staff of the Texas Utility Commission and certain intervenors to settle the issues in the Remand Proceeding (the Settlement). In October 2011, the Texas Utility Commission approved a final order (the Final Order) in the Remand Proceeding consistent with the Settlement. The Final Order provided that (i) CenterPoint Houston was entitled to recover an additional true-up balance of $1.695 billion (the Recoverable True-Up Balance) in the Remand Proceeding, (ii) no further interest would accrue on the Recoverable True-Up Balance, and (iii) CenterPoint Houston would reimburse certain parties for their reasonable rate case expenses.

In October 2011, the Texas Utility Commission also issued a financing order (the Financing Order) that authorized the issuance of transition bonds by CenterPoint Houston to securitize the Recoverable True-Up Balance. In January 2012, Bond Company IV, a new special purpose subsidiary of CenterPoint Houston, issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. Through the issuance of these transition bonds, CenterPoint Houston recovered the Recoverable True-Up Balance, less approximately $10.4 million of offering expenses. The transition bonds will be repaid through a charge imposed on customers in CenterPoint Houston's service territory. The holders of the transition bonds do not have recourse to any assets or revenues of CenterPoint Houston, and the creditors of CenterPoint Houston do not have recourse to any assets or revenues of Bond Company IV, including, without limitation, the transition property transferred to Bond Company IV in connection with the issuance of the transition bonds. The transition property includes the right to impose, collect and receive an irrevocable, non-bypassable charge payable by CenterPoint Houston's retail electric customers.

As a result of the Final Order, in 2011 CenterPoint Houston recorded a pre-tax extraordinary gain of $921 million ($598 million after taxes of $323 million) and $352 million ($229 million after-tax) of Other Income related to a portion of interest on the appealed amount.  An additional $405 million ($263 million after-tax) will be recorded as an equity return over the life of the transition bonds.