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Short Term Borrowings and Long Term Debt
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Short-term Borrowings and Long-term Debt [Text Block] Short-term Borrowings and Long-term Debt
 December 31,
2020
December 31,
2019
 Long-Term
Current (1)
Long-Term
Current (1)
 (in millions)
CenterPoint Energy:
ZENS due 2029 (2)
$— $15 $— $19 
CenterPoint Energy senior notes 2.50% to 4.25% due 2021 to 2049 (3)
2,700 500 3,200 — 
CenterPoint Energy variable rate term loan 0.865% due 2021
— 700 1,000 — 
CenterPoint Energy pollution control bonds 5.125% due 2028 (5)
68 — 68 — 
CenterPoint Energy commercial paper (6) (7)
1,078 — 1,633 — 
VUHI senior notes 3.72% to 6.10% due 2021 to 2045
377 55 432 100 
VUHI commercial paper (6) (7)
92 — 268 — 
VUHI variable rate term loan — — — 300 
VCC variable rate term loan— — — 200 
IGC senior notes 6.34% to 7.08% due 2025 to 2029
96 — 96 — 
SIGECO first mortgage bonds 0.875% to 6.72% due 2022 to 2055 (4)
293 — 293 — 
Other debt12 18 18 
Unamortized debt issuance costs(17)— (22)— 
Unamortized discount and premium, net(6)(7)
Houston Electric debt (see details below)4,406 613 4,719 231 
CERC debt (see details below)2,428 24 2,546 — 
Total CenterPoint Energy debt$11,521 $1,919 $14,244 $868 
Houston Electric:    
First mortgage bonds 9.15% due 2021 (8)
$— $102 $102 $— 
General mortgage bonds 1.85% to 6.95% due 2021 to 2050
3,912 300 3,912 — 
Restoration Bond Company:
System restoration bonds 4.243% due 2022
69 66 134 62 
Bond Company III:
Transition bonds 5.234% due 2020
— — — 29 
Bond Company IV:
Transition bonds 3.028% due 2024
467 145 613 140 
Unamortized debt issuance costs(28)— (27)— 
Unamortized discount and premium, net(14)— (15)— 
Total Houston Electric debt$4,406 $613 $4,719 $231 
CERC (9):
Short-term borrowings:    
Inventory financing$— $24 $— $— 
Total CERC short-term borrowings— 24 — — 
Long-term debt:    
Senior notes 1.75% to 6.625% due 2023 to 2047
$2,100 $— $2,193 $— 
Commercial paper (6) (7)
347 — 377 — 
Unamortized debt issuance costs(15)— (13)— 
Unamortized discount and premium, net(4)— (11)— 
Total CERC long-term debt2,428 — 2,546 — 
Total CERC debt$2,428 $24 $2,546 $— 
(1)Includes amounts due or exchangeable within one year of the date noted.

(2)CenterPoint Energy’s ZENS obligation is bifurcated into a debt component and an embedded derivative component. For additional information regarding ZENS, see Note 12(b). As ZENS are exchangeable for cash at any time at the option of the holders, these notes are classified as a current portion of long-term debt.

(3)The senior notes issued by VUHI are guaranteed by SIGECO, Indiana Gas and VEDO.

(4)The first mortgage bonds issued by SIGECO subject SIGECO’s properties to a lien under the related mortgage indenture as further discussed below.
(5) These pollution control bonds were secured by general mortgage bonds of Houston Electric as of December 31, 2020 and 2019 and are not reflected in Houston Electric’s consolidated financial statements because of the contingent nature of the obligations.

(6)Classified as long-term debt because the termination date of the facility that backstops the commercial paper is more than one year from the date noted.

(7)Commercial paper issued by CenterPoint Energy, CERC Corp. and VUHI has maturities up to 60 days, 30 days, and 30 days, respectively, and are backstopped by the respective issuer’s long-term revolving credit facility.

(8)The first mortgage bonds issued by Houston Electric subject Houston Electric’s properties to a lien under the related mortgage indenture as further discussed below.

(9)Issued by CERC Corp.

Long-term Debt

Debt Repayments. In April 2020, VCC repaid the aggregate principal amount of its $200 million variable term loan, and VUHI refinanced a $100 million 6.28% guaranteed senior note that matured in April 2020. In June 2020, VUHI repaid the aggregate principal amount of its $300 million variable term loan. In addition, in June 2020, CenterPoint Energy repaid $300 million of principal on its outstanding $1.0 billion variable rate term loan.

Debt Redemption. In September 2020, CERC Corp. provided notice of redemption relating to $593 million aggregate principal amount of CERC Corp.’s outstanding 4.50% Senior Notes due 2021, Series A and B. All of the outstanding senior notes were redeemed in full in October 2020 at a redemption price equal to 100% of the principal amount thereof, plus accrued and unpaid interest to, but excluding, the redemption date.

In December 2020, CenterPoint Energy provided notice of redemption relating to $250 million aggregate principal amount of its outstanding $500 million aggregate principal amount 3.85% senior notes, which were redeemed in January 2021 at a redemption price equal to 100% of the principal amount redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, plus the applicable make-whole premium of $26 million.

Debt Transactions. In June 2020, Houston Electric issued $300 million aggregate principal amount of 2.90% general mortgage bonds maturing in 2050. Total proceeds, net of issuance expenses and fees, of approximately $296 million were used for general limited liability company purposes, including capital expenditures and the repayment of a portion of borrowings under the CenterPoint Energy money pool.

In September 2020, SIGECO completed the remarketing of two series of tax-exempt debt of approximately $38 million, comprised of: (i) $23 million aggregate principal amount of Environmental Improvement Revenue Bonds, Series 2015, issued by the City of Mount Vernon, Indiana, and (ii) $15 million aggregate principal amount of Environmental Improvement Revenue Bonds, Series 2015, issued by Warrick County, Indiana, that, in each case, were originally issued on September 9, 2015. Both series of revenue bonds originally had an initial term interest rate of 2.375%. After the remarketing, each series of revenue bonds have a new term interest rate of 0.875% that is fixed through August 31, 2023. Each series of revenue bonds have a final maturity date of September 1, 2055, subject to prior redemption.

In October 2020, CERC Corp. issued $500 million aggregate principal amount of 1.75% senior notes due 2030. Total proceeds, net of issuance expenses and fees, of approximately $495 million were used for general corporate purposes, including the payment of a portion of the redemption amount of CERC Corp.’s 4.50% senior notes due 2021 redeemed in full on October 15, 2020.
Securitization Bonds. As of December 31, 2020, CenterPoint Energy and Houston Electric had special purpose subsidiaries consisting of the Bond Companies, which they consolidate. The consolidated special purpose subsidiaries are wholly-owned, bankruptcy remote entities that were formed solely for the purpose of purchasing and owning transition or system restoration property through the issuance of transition bonds or system restoration bonds and activities incidental thereto. These Securitization Bonds are payable only through the imposition and collection of “transition” or “system restoration” charges, as defined in the Texas Public Utility Regulatory Act, which are irrevocable, non-bypassable charges to provide recovery of authorized qualified costs. CenterPoint Energy and Houston Electric have no payment obligations in respect of the Securitization Bonds other than to remit the applicable transition or system restoration charges they collect as set forth in servicing agreements among Houston Electric, the Bond Companies and other parties. Each special purpose entity is the sole owner of the right to impose, collect and receive the applicable transition or system restoration charges securing the bonds issued by that entity. Creditors of CenterPoint Energy or Houston Electric have no recourse to any assets or revenues of the Bond Companies (including the transition and system restoration charges), and the holders of Securitization Bonds have no recourse to the assets or revenues of CenterPoint Energy or Houston Electric.

Credit Facilities. The Registrants had the following revolving credit facilities as of December 31, 2020:
Execution
Date
RegistrantSize of
Facility
Draw Rate of LIBOR plus (1)
Financial Covenant Limit on Debt for Borrowed Money to Capital Ratio  
Debt for Borrowed Money to Capital
Ratio as of
December 31, 2020 (2)
Termination
Date
(in millions)
March 3, 2016CenterPoint Energy $3,300 1.500%65%(3)53.9%March 3, 2022
July 14, 2017
CenterPoint Energy (4)
400 1.125%65%49.7%July 14, 2022
March 3, 2016Houston Electric300 1.250%65%(3)53.1%March 3, 2022
March 3, 2016
CERC
900 1.125%65%48.9%March 3, 2022
Total$4,900 

(1)Based on credit ratings as of December 31, 2020.

(2)As defined in the revolving credit facility agreement, excluding Securitization Bonds.

(3)For CenterPoint Energy and Houston Electric, the financial covenant limit will temporarily increase from 65% to 70% if Houston Electric experiences damage from a natural disaster in its service territory and CenterPoint Energy certifies to the administrative agent that Houston Electric has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive 12-month period, all or part of which Houston Electric intends to seek to recover through securitization financing. Such temporary increase in the financial covenant would be in effect from the date CenterPoint Energy delivers its certification until the earliest to occur of (i) the completion of the securitization financing, (ii) the first anniversary of CenterPoint Energy’s certification or (iii) the revocation of such certification.

(4)This credit facility was issued by VUHI, is guaranteed by SIGECO, Indiana Gas and VEDO and included a $10 million swing line sublimit and a $20 million letter of credit sublimit. This credit facility backstops VUHI’s commercial paper program.

On September 30, 2020, VCC terminated its $200 million credit agreement dated as of July 14, 2017 after determining that it was no longer necessary for financing purposes. VCC did not incur any penalties in connection with the early termination.

The Registrants, as well as the subsidiaries of CenterPoint Energy discussed above, were in compliance with all financial debt covenants as of December 31, 2020.
As of December 31, 2020 and 2019, the Registrants had the following revolving credit facilities and utilization of such facilities:
December 31, 2020December 31, 2019
RegistrantLoansLetters
of Credit
Commercial
Paper
Weighted Average Interest RateLoansLetters
of Credit
Commercial
Paper
Weighted Average Interest Rate
(in millions, except weighted average interest rate)
CenterPoint Energy (1)
$— $11 $1,078 0.23 %$— $$1,633 1.95 %
CenterPoint Energy (2)
— — 92 0.22 %— — 268 2.08 %
Houston Electric— — — — %— — — — %
CERC — — 347 0.23 %— 377 1.94 %
Total$— $11 $1,517 $— $$2,278 

(1)CenterPoint Energy’s outstanding commercial paper generally has maturities of 60 days or less.

(2)This credit facility was issued by VUHI and is guaranteed by SIGECO, Indiana Gas and VEDO.

On February 4, 2021, each of CenterPoint Energy, Houston Electric, CERC Corp. and VUHI replaced their existing revolving credit facilities with new amended and restated credit facilities. The size of the CenterPoint Energy facility decreased from $3.3 billion to $2.4 billion, while the sizes of the Houston Electric, CERC Corp. and VUHI facilities remained unchanged. The VUHI facility remains guaranteed by SIGECO, Indiana Gas and VEDO. Based on the credit ratings as of February 4, 2021, the draw rate would have been LIBOR plus 1.625% under the CenterPoint Energy facility, LIBOR plus 1.375% under the Houston Electric facility, LIBOR plus 1.250% under the CERC Corp. facility, and LIBOR plus 1.250% under the VUHI facility. Each credit facility contains provisions relating to the replacement of LIBOR.

The financial covenant limit on debt for borrowed money to capital ratio remained at 65.0% for each of the CenterPoint Energy, CERC Corp. and VUHI facilities and increased to 67.5% for the Houston Electric facility. As with the facilities that were replaced, the CenterPoint Energy and Houston Electric facilities’ financial covenant limit on debt for borrowed money to capital ratio can temporarily increase to 70.0% if Houston Electric experiences certain damages from a natural disaster in its service territory and CenterPoint Energy certifies to the administrative agent that Houston Electric has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive 12-month period, all or part of which Houston Electric intends to seek to recover through securitization financing. Each of the amended and restated facilities have a maturity date of February 4, 2024.

Maturities. As of December 31, 2020, maturities of long-term debt, capital leases and sinking fund requirements, excluding the ZENS obligation and unamortized discounts, premiums and issuance costs, are as follows:
CenterPoint
Energy (1)
Houston
 Electric (1)
CERCSecuritization Bonds
(in millions)
2021$1,868 $613 $— $211 
20222,542 519 347 219 
2023713 356 300 156 
20241,184 162 — 162 
202551 — — — 

(1)These maturities include Securitization Bonds principal repayments on scheduled payment dates.

Liens.  As of December 31, 2020, Houston Electric’s assets were subject to liens securing approximately $102 million of first mortgage bonds. Sinking or improvement fund and replacement fund requirements on the first mortgage bonds may be satisfied by certification of property additions. Sinking fund and replacement fund requirements for 2020, 2019 and 2018 have been satisfied by certification of property additions. The replacement fund requirement to be satisfied in 2021 is approximately $317 million, and the sinking fund requirement to be satisfied in 2021 is approximately $1.6 million. CenterPoint Energy expects Houston Electric to meet these 2021 obligations by certification of property additions.

As of December 31, 2020, Houston Electric’s assets were also subject to liens securing approximately $4.0 billion of general mortgage bonds, including approximately $68 million held in trust to secure pollution control bonds for which CenterPoint Energy is obligated. The lien of the general mortgage indenture is junior to that of the mortgage pursuant to which the first mortgage bonds are issued. Houston Electric may issue additional general mortgage bonds on the basis of retired
bonds, 70% of property additions or cash deposited with the trustee. Approximately $4.3 billion of additional first mortgage bonds and general mortgage bonds could be issued on the basis of retired bonds and 70% of property additions as of December 31, 2020. Houston Electric has contractually agreed that it will not issue additional first mortgage bonds, subject to certain exceptions.

As of December 31, 2020, SIGECO had approximately $293 million aggregate principal amount of first mortgage bonds outstanding. Generally, of SIGECO’s real and tangible property is subject to the lien of SIGECO’s mortgage indenture. SIGECO may issue additional bonds under its mortgage indenture up to 60% of currently unfunded property additions. As of December 31, 2020, approximately $1.3 billion of additional first mortgage bonds could be issued on this basis. However, SIGECO is also limited in its ability to issue additional bonds under its mortgage indenture due to certain provisions in its parent’s, VUHI, debt agreements.
Other. As of December 31, 2020, certain financial institutions agreed to issue, from time to time, up to $20 million of letters of credit on behalf of certain of Vectren’s subsidiaries in exchange for customary fees. These agreements to issue letters of credit expire on December 31, 2021. As of December 31, 2020, such financial institutions had issued $1 million of letters of credit on behalf of these subsidiaries.