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Related Party Transactions (Houston Electric and CERC)
 3 Months Ended
Mar. 31, 2025
Related Party Transactions [Abstract]  
Related Party Transactions (Houston Electric and CERC) Related Party Transactions (Houston Electric and CERC)
Houston Electric and CERC participate in CenterPoint Energy’s money pool through which they can borrow or invest on a short-term basis. Funding needs are aggregated and external borrowing or investing is based on the net cash position. The net funding requirements of the CenterPoint Energy money pool are expected to be met with borrowings under CenterPoint Energy’s revolving credit facility or the sale of CenterPoint Energy’s commercial paper.

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.
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.

CenterPoint Energy provides some corporate services to Houston Electric and CERC. The costs of services have been charged directly to Houston Electric and CERC using methods that management believes are reasonable. These methods include usage rates, dedicated asset assignment and proportionate corporate formulas based on operating expenses, assets, gross margin, employees and a composite of assets, gross margin and employees. Houston Electric provides certain services to CERC. These services are billed at actual cost, either directly or as an allocation and include fleet services, shop services, geographic services, surveying and right-of-way services, radio communications, data circuit management and field operations. Additionally, CERC provides certain services to Houston Electric. These services are billed at actual cost, either directly or as an allocation and include line locating and other miscellaneous services. These charges are not necessarily indicative of what would have been incurred had Houston Electric and CERC not been affiliates.

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 —