Transition Bonds. In January 2012, Bond Company IV 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. The transition bonds will be repaid over time through a charge imposed on customers in CenterPoint Houston’s service territory.

Revolving Credit Facility. As of December 31, 2011 and March 31, 2012, CenterPoint Houston had the following revolving credit facility and utilization of such facility (in millions):



		December 31, 2011				March 31, 2012
Size of Facility		Loans		Letters of Credit		Loans		Letters of Credit
$	300	$	—	$	4	$	—	$	4

CenterPoint Houston’s $300 million credit facility, which is scheduled to terminate September 9, 2016, can be drawn at the London Interbank Offered Rate (LIBOR) plus 150 basis points based on CenterPoint Houston’s current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to total capitalization covenant, limiting debt to 65% of its capitalization.

Other. At both December 31, 2011 and March 31, 2012, CenterPoint Houston had issued $151 million of first mortgage bonds as collateral for long-term debt of CenterPoint Energy. As of December 31, 2011 and March 31, 2012, CenterPoint Houston had issued $508 million and $408 million of general mortgage bonds as collateral for long-term debt of CenterPoint Energy, respectively. These bonds are not reflected in the consolidated financial statements because of the contingent nature of the obligations.