Exhibit 99.1

Semiannual Servicer’s Certificate

CenterPoint Energy Transition Bond Company IV, LLC

$1,695,000,000 2012 Senior Secured Transition Bonds

Pursuant to Section 6.13 of the Transition Property Servicing Agreement (the “Agreement”), dated as of January 19, 2012, between CenterPoint Energy Houston Electric, LLC, as Servicer, and CenterPoint Energy Transition Bond Company IV, LLC, as Issuer, the Servicer does hereby certify as follows:

Capitalized terms used in this Semiannual Servicer’s Certificate have their respective meanings as set forth in the Agreement. References herein to certain sections and subsections are references to the respective sections and subsections of the Agreement.

Collection Periods: October 13, 2017 through April 12, 2018

Payment Date: April 16, 2018

Today’s Date: April 12, 2018

1. Collections Allocable and Aggregate Amounts Available for Current Payment Date:
i.	Remittances for the October 13 through 31, 2017 Collection Period		5,445,671.43
ii.	Remittances for the November 1 through 30, 2017 Collection Period		7,494,523.38
iii.	Remittances for the December 1 through 31, 2017 Collection Period		6,234,290.66
iv.	Remittances for the January 1 through 31, 2018 Collection Period		6,983,965.43
v.	Remittances for the February 1 through 28, 2018 Collection Period		18,043,130.58
vi.	Remittances for the March 1 through 31, 2018 Collection Period		22,506,134.52
vii.	Remittances for the April 1 through 12, 2018 Collection Period		10,532,544.00
viii.	Net Earnings on General Subaccount		162,158.14			[10/1/17 through 3/31/18]
ix.	General Subaccount Balance (sum of i through viii above)		77,402,418.14
x.	Excess Funds Subaccount Balance as of Current Payment Date		9,573,084.12
xi.	Capital Subaccount Balance as of Current Payment Date (1)		8,557,240.44
xii.	Collection Account Balance (sum of ix through xi above)		95,532,742.70
2. Outstanding Amounts as of Prior Payment Date:
i.	Tranche A-1 Principal Balance		0.00
ii.	Tranche A-2 Principal Balance		338,505,654.00
iii	Tranche A-3 Principal Balance		681,262,000.00
iv.	Aggregate Principal Balance of all Series 2012 Transition Bonds		1,019,767,654.00
3. Required Funding/Payments as of Current Payment Date:
	Principal	Projected Principal Balance			Semiannual Principal Due
i.	Tranche A-1		0.00			0.00
ii.	Tranche A-2		273,518,002.00			64,987,652.00
iii.	Tranche A-3		681,262,000.00			0.00
iv.	For all Series 2012 Transition Bonds		954,780,002.00			64,987,652.00
		Transition Bond Interest Rate			Days in Interest Period (2)		Interest Due
v.	Required Tranche A-1 Interest		0.9012	%		180		0.00
vi.	Required Tranche A-2 Interest		2.1606	%		180		3,656,876.58
vii.	Required Tranche A-3 Interest		3.0282	%		180		10,314,987.94

(1) Including current period earnings of $48,622.74

(2) On 30/360 Day basis.

		Required Level (Including Replenishment of Amounts Previously Withdrawn for  4.i.-4.viii.)			Funding Required*
viii.	Capital Subaccount		8,475,000.00			0.00
*  Includes $0.00 of prior period unreleased earnings.
4. Allocation of Remittances as of Current Payment Date Pursuant to Section 8.02(d) of Indenture:
i.	Trustee Fees and Expenses		31,500.00
ii.	Servicing Fee		423,750.00	(1)
iii.	Administration Fee and Independent Manager Fee		53,500.00	(2)
iv.	Operating Expenses		178,066.85	(3)
v.	Semiannual Interest (including any past-due Semiannual Interest for prior periods)
		Aggregate			Per 1,000 of Original Principal Amount
	1. Tranche A-1 Interest Payment		0.00			0.00
	2. Tranche A-2 Interest Payment		3,656,876.58			8.97
	3. Tranche A-3 Interest Payment		10,314,987.94			15.14
vi.	Principal Due and Payable as a result of (A) Event of Default or (B) on Final Maturity Date
		Aggregate			Per 1,000 of Original Principal Amount
	1. Tranche A-1 Principal Payment		0.00			0.00
	2. Tranche A-2 Principal Payment		0.00			0.00
	3. Tranche A-3 Principal Payment		0.00			0.00
vii.	Principal Scheduled to be Paid on Current Payment Date
		Aggregate			Per 1,000 of Original Principal Amount
	1. Tranche A-1 Principal Payment		0.00			0.00
	2. Tranche A-2 Principal Payment		64,987,652.00			159.47
	3. Tranche A-3 Principal Payment		0.00			0.00
viii.	Operating Expenses not Paid under Clause (iv) above		0.00
ix.	Replenishment of Any Amounts Drawn from Capital Subaccount		0.00
x.	Amount Calculated at Servicer’s Authorized Rate of Return on Equity on the Amount Contributed to the Capital Subaccount in Excess of 0.5% of the Initial Outstanding Principal Balance of the Bonds Released to Issuer		NA
xi.	Net Earnings in Capital Subaccount Relating to the Initial Contribution of 0.5% of the Initial Outstanding Principal Balance of the Bonds Released to Issuer		0.00
xii.	Deposit to Excess Funds Subaccount		0.00
xiii.	Released to Issuer upon Series Retirement: Collection Account		0.00
xiv.	Aggregate Remittances as of Current Payment Date		79,646,333.37
(1)   Servicing fee: $1,695,000,000 x .05% x 180/360 = $423,750.00
(2)   Administration fee: $100,000 x 180/360 = $50,000.00 plus independent manager fee ($3,500)
(3)   Reimbursement to Administrator for fees/expenses paid as follows:
	Outside counsel		344.00
	Printing		780.00
	Independent auditor		148,692.85
	Rating Agencies		28,250.00
	Total		178,066.85

5. Subaccount Release or Withdrawals as of Current Payment Date Pursuant to Section 8.02(d) of Indenture:
i.	Capital Subaccount Release (available for 4.xi.)	0.00
ii.	Excess Funds Subaccount Withdrawal (available for 4.i. through 4.x.)	2,243,915.23
iii.	Capital Subaccount Withdrawal (available for 4.i. through 4.viii.)	0.00
iv.	Total Release or Withdrawals	2,243,915.23
6. Outstanding Amounts and Collection Account Balance as of Current Payment Date (after giving effect to payments to be made on such Payment Date):
i.	Tranche A-1 Principal Balance	0.00
ii.	Tranche A-2 Principal Balance	273,518,002.00
iii.	Tranche A-3 Principal Balance	681,262,000.00
iv.	Aggregate Principal Balance for all Series 2012 Transition Bonds	954,780,002.00
v.	Excess Funds Subaccount Balance	7,329,168.89
vi.	Capital Subaccount Balance	8,557,240.44
vii.	Aggregate Collection Account Balance	15,886,409.33
7. Shortfalls In Interest and Principal Payments as of Current Payment Date (after giving effect to payments to be made on such Payment Date):
i.	Semiannual Interest
	1. Tranche A-1 Bond Interest Payment	0.00
	2. Tranche A-2 Bond Interest Payment	0.00
	3. Tranche A-3 Bond Interest Payment	0.00
ii.	Semiannual Principal
	1. Tranche A-1 Principal Payment	0.00
	2. Tranche A-2 Principal Payment	0.00
	3. Tranche A-3 Principal Payment	0.00
8. Shortfall in Required Subaccount Level as of Current Payment Date (after giving effect to payments to be made on such Payment Date):
i.	Capital Subaccount	0.00

IN WITNESS HEREOF, the undersigned has duly executed and delivered this Semiannual Servicer’s Certificate this 12th day of April, 2018.

CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC, as Servicer
by:	/s/ Robert B. McRae
	Robert B. McRae
	Assistant Treasurer