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Related Party Transactions (Houston Electric and CERC) (Tables)
 3 Months Ended
Mar. 31, 2025
Related Party Transactions [Abstract]  
Schedule of Money Pool Investment and Borrowing
The table below summarizes CenterPoint Energy money pool activity:

March 31, 2025December 31, 2024
Houston Electric
CERC (2)
Houston Electric
CERC
 (in millions, except interest rates)
Money pool investments (1)
$159 $1,222 $368 $— 
Weighted average interest rate4.64 %4.64 %4.65 %— %

(1)Included in Accounts and notes receivable–affiliated companies in Houston Electric’s and CERC’s respective Condensed Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024, as applicable.
(2)Includes the proceeds from the sale of CERC Corp.’s Louisiana and Mississippi natural gas LDC businesses.
Schedule of Related Party Transactions
Houston Electric and CERC affiliate-related transactions were as follows:
Three Months Ended March 31,
20252024
Houston ElectricCERCHouston ElectricCERC
(in millions)
Interest income, net (1)
$2 $1 $3 $— 

(1) Interest income is included in Other income, net and interest expense is included in Interest expense and other finance charges on Houston Electric’s and CERC’s respective Statements of Consolidated Income.
The table below presents amounts charged for these services, which are included primarily in Operation and maintenance expenses on Houston Electric’s and CERC’s respective Condensed Statements of Consolidated Income:
Three Months Ended March 31,
20252024
Houston ElectricCERCHouston ElectricCERC
(in millions)
Corporate service charges$43 $55 $35 $51 
Net affiliate service charges (billings)(1)1 (1)1 

The table below presents transactions among Houston Electric, CERC and their parent, Utility Holding:
Three Months Ended March 31,
20252024
Houston ElectricCERCHouston ElectricCERC
(in millions)
Cash dividends paid to parent$90 $97 $36 $115 
Cash contribution from parent — — 230 —