CenterPoint Energy

(1) Quarterly diluted EPS on both a GAAP and non-GAAP basis are based on the weighted average number of shares of common stock outstanding during the quarter, and the sum of the quarters may not equal

year-to-date diluted EPS

(2) Taxes are computed based on the impact removing such item would have on tax expense. Taxes related to the Louisiana and Mississippi natural gas LDC business sale are booked proportionately by

applying the projected annual effective tax rate percentage to income earned each quarter in accordance with GAAP. Additional tax expense related primarily to the write-off of non-deductible goodwill was

reflected in tax expense over the remainder of 2025 and excluded from non-GAAP EPS

(3) Comprised of common stock of AT&T Inc., Charter Communications, Inc. and Warner Bros. Discovery, Inc.

(4) Includes gain on early extinguishment of debt with proceeds from the divestiture of the Louisiana and Mississippi natural gas LDC businesses

(5) Represents impacts related to temporary emergency electric energy facilities following the removal of the units from our rate regulated business

(6) The calculation on a per-share basis may not add down due to rounding

17

(1) Quarterly diluted EPS on both a GAAP and non-GAAP basis are based on the weighted average number of shares of common stock outstanding during the quarter, and the sum of the quarters may not equal

year-to-date diluted EPS

(2) Taxes are computed based on the impact removing such item would have on tax expense. Taxes related to the Louisiana and Mississippi natural gas LDC business sale are booked proportionately by

applying the projected annual effective tax rate percentage to income earned each quarter in accordance with GAAP. Additional tax expense related primarily to the write-off of non-deductible goodwill was

reflected in tax expense over the remainder of 2025 and excluded from non-GAAP EPS

(3) Comprised of common stock of AT&T Inc., Charter Communications, Inc., and Warner Bros. Discovery, Inc.

(4) Includes $37 million loss on sale associated with the divestiture of our Louisiana and Mississippi natural gas LDC businesses and gain on early extinguishment of debt with proceeds from the divestiture of the

Louisiana and Mississippi natural gas LDC businesses

(5) Represents impacts related to temporary emergency electric energy facilities following the removal of the units from our rate regulated business

(6) The calculation on a per-share basis may not add down due to rounding

18

(1) Based on Moody’s methodology, including adjustments related to operating lease costs, stock dividends, non-recurring items, and net defined benefit plan contributions

(2) CNP further reduced FY 2025 for the associated one-time Winter Storm Uri related debt as well as CEHE storm related costs and Q2 2026 for one-time Winter Storm Uri related debt. Please see note 17 of

the 2025 Form 10-K for supplemental disclosure of cash flow information

19 (1) Based on S&P’s methodology, including adjustments related to operating lease costs, stock dividends, non-recurring items, and net defined benefit plan contributions

(2) Excludes CEHE storm related debt cost of $1,200 million as of 12/31/2025 and $0 million as of 6/30/2026

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CenterPoint Energy | 24

Additional Information

Use of Non-GAAP Financial Measures

In this presentation and the oral statements made in connection herewith, CenterPoint Energy presents, based on net income (loss), diluted earnings (loss) per share, and net cash provided by operating activities to total debt, net, and gross margin to total debt, net, the following

financial measures which are not generally accepted accounting principles (“GAAP”) financial measures: non-GAAP income, non-GAAP diluted earnings per share (“non-GAAP EPS”), as well as non-GAAP funds from operations / non-GAAP rating agency adjusted debt (Moody’s

and S&P) (“FFO/Debt”). Generally, a non-GAAP financial measure is a numerical measure of a company’s historical or future financial performance that excludes or includes amounts that are not normally excluded or included in the most directly comparable GAAP financial

measure.

2025 and 2026 non-GAAP EPS excluded and non-GAAP EPS guidance excludes: (a) Earnings or losses from the change in value of ZENS and related securities, (b) Gain, losses and impact, including related expenses, associated with mergers and divestitures, such as the

divestiture of our Louisiana and Mississippi natural gas LDC businesses and the pending divestiture of our Ohio natural gas LDC business, and (c) With respect to 2025 non-GAAP EPS and non-GAAP EPS guidance, impacts related to temporary emergency electric facilities

("TEEEF") once they are no longer part of our rate-regulated business. In providing 2025 and 2026 non-GAAP EPS and non-GAAP EPS guidance, CenterPoint Energy does not consider the items noted above and other potential impacts such as changes in accounting

standards, impairments or other unusual items, which could have a material impact on GAAP reported results for the applicable guidance period. The non-GAAP EPS guidance ranges also consider assumptions for certain significant variables that may impact earnings, such as

customer growth and usage including normal weather, throughput, recovery of capital invested, effective tax rates, financing activities and related interest rates, and regulatory and judicial proceedings. To the extent actual results deviate from these assumptions, the non-GAAP

EPS guidance ranges may not be met, or the projected annual non-GAAP EPS growth rate may change. CenterPoint Energy is unable to present a quantitative reconciliation of forward-looking non-GAAP diluted earnings per share without unreasonable effort because changes in

the value of ZENS and related securities, future impairments, and other unusual items are not estimable and are difficult to predict due to various factors outside of management’s control.

Funds from operations (Moody’s) excludes from net cash provided by operating activities, accounts receivable and unbilled revenues, net, inventory, accounts payable, and other current assets and liabilities, and includes certain adjustments consistent with Moody’s methodology,

including adjustments related to operating lease costs, stock dividends, non-recurring items, and net defined benefit plan contributions. Non-GAAP rating agency adjusted debt (Moody’s) adds to Total Debt, net certain adjustments consistent with Moody’s methodology, including

operating lease costs, stock dividends, non-recurring items, and net defined benefit plan contributions and further adjustments related to CEHE storm related costs.

Funds from operations (S&P) excludes from gross margin, O&M, taxes and other, cash interest paid and cash taxes paid, and includes certain adjustments consistent with S&P's methodology, including adjustments related to operating lease costs, stock dividends, non-recurring

items, and net defined benefit plan contributions. Non-GAAP rating agency adjusted debt (S&P) adds to Total Debt, net certain adjustments consistent with S&P's methodology, including adjustments related to Winter Storm Uri related debt and CEHE storm related debt. The

appendix to this presentation contains a reconciliation of net income (loss) and diluted earnings (loss) per share to the basis used in providing guidance, as well as a reconciliation of net cash provided by operating activities / total debt, net (and gross margin to total debt, net) to

FFO/Debt.

Management evaluates the Company’s financial performance in part based on non-GAAP income, non-GAAP EPS and long-term FFO/Debt. Management believes that presenting these non-GAAP financial measures enhances an investor’s understanding of CenterPoint

Energy’s overall financial performance by providing them with an additional meaningful and relevant comparison of current and anticipated future results across periods. The adjustments made in these non-GAAP financial measures exclude items that management believes do

2025 and 2026 non-GAAP EPS excluded and guidance excludes ZENS-related changes, merger/divestiture gains, losses and related expenses (including the Louisiana/Mississippi sale and pending Ohio natural gas LDC divestiture), and 2025 TEEEF impacts once no longer rate-regulated.

A significant amount of exchanges of ZENS by ZENS holders could adversely impact CenterPoint Energy's cash flows and liquidity.

Additional tax expense related primarily to the write-off of non-deductible goodwill was reflected in tax expense over the remainder of 2025 and excluded from non-GAAP EPS.

Approvals may be delayed, modified, rescinded or not extended.