SOUTHERN CALIFORNIA EDISON Co

Report of Independent Registered Public Accounting Firm

To the** **Board of Directors and Shareholders of Edison International

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Edison International and its subsidiaries (the “Company”) as of December 31, 2023 and 2022, and the related consolidated statements of income, of comprehensive income, of changes in equity and of cash flows for each of the three years in the period ended December 31, 2023, including the related notes and schedule of condensed financial information of parent as of December 31, 2023 and 2022 and for each of the three years in the period ended December 31, 2023 appearing under Item 15(a)(2) (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2023, based on criteria established inInternal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023, based on criteria established inInternal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies

and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were communicated or required to be communicated to the audit committee and that (i) relate to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Wildfire-Related Claims - 2017/2018 Wildfire/Mudslide Events

As described in Note 12 to the consolidated financial statements, the Thomas Fire, the Koenigstein Fire, the Montecito Mudslides and the Woolsey Fire (collectively, the "2017/2018 Wildfire/Mudslide Events") within the Company's service territory caused loss of life, substantial damage to both residential and business properties, and service outages for the Company's customers. Numerous claims related to wildfire events have been initiated against the Company. The Company has incurred material losses in connection with the 2017/2018 Wildfire/Mudslide Events. As disclosed by management, management records loss contingencies when it determines that the outcome of future events is probable of occurring and when the amount of the loss can be reasonably estimated. As of December 31, 2023, the Company had paid $8.7 billion under executed settlements, had $78 million to be paid under executed settlements, including $62 million to be paid under the Safety and Enforcement Division agreement, and had $637 million of estimated losses for remaining alleged and potential claims reflected on its consolidated balance sheets related to the 2017/2018 Wildfire/Mudslide Events. As of the same date, the Company had assets for expected recoveries through Federal Energy Regulatory Commission (FERC) electric rates of $37 million on its consolidated balance sheets and had exhausted expected insurance recoveries related to the 2017/2018 Wildfire/Mudslide Events. Each reporting period, management reviews the Company’s loss estimates for remaining alleged and potential claims related to wildfire events. The process for estimating losses associated with alleged and potential wildfire related claims requires management to exercise significant judgment based on a number of assumptions and subjective factors, including, but not limited to: estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, the status of and developments in the course of litigation, and prior experience litigating and settling wildfire litigation claims. As additional information becomes available, management's estimates and assumptions regarding the causes and financial impact of wildfire events may change. For the year ended December 31, 2023 management recorded charges for wildfire claims of $630 million and expected revenue from FERC customers of $37 million. The resulting pre-tax charge to earnings was $593 million ($428 million after-tax).

The principal considerations for our determination that performing procedures relating to the wildfire-related claims from the 2017/2018 Wildfire/Mudslide Events is a critical audit matter are (i) the significant judgment by management when determining whether the outcome of future events is probable of occurring and whether the amount of the loss can be reasonably estimated as well as in estimating losses associated with alleged and potential claims related to wildfire events and (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating management's significant assumptions related to estimates of known and expected claims by third parties based on

currently available information, opinions of counsel regarding litigation risk, and prior experience litigating and settling wildfire litigation claims.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management's assessment of loss contingencies associated with alleged and potential claims related to wildfire events. These procedures also included, among others (i) obtaining and evaluating the letters of audit inquiry with internal and external legal counsel; (ii) assessing the reasonableness of management's assessment regarding whether the outcome of future events is probable of occurring and whether the amount of the loss can be reasonably estimated; (iii) evaluating the appropriateness of the methods used by management in estimating losses associated with alleged and potential claims related to wildfire events; (iv) evaluating the reasonableness of the significant assumptions related to estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, and prior experience litigating and settling wildfire litigation claims; and (v) testing, on a sample basis, damage claim settlements. Evaluating management’s assumptions involved evaluating whether the assumptions used by management were reasonable considering (i) current damage claim settlements; (ii) past wildfire litigation history; and (iii) third-party source data.

Accounting for the Effects of Rate Regulation

As described in Notes 1 and 11 to the consolidated financial statements, the Company's accounting policies conform to accounting principles generally accepted in the United States of America, including the accounting principles for rate-regulated enterprises, which reflect the ratemaking policies of the California Public Utility Commission (CPUC) and the FERC. Management applies authoritative guidance for rate-regulated enterprises to the portion of the Company’s operations in which regulators set rates at levels intended to recover the estimated costs of providing service, plus a return on net investments in assets, or rate base. Regulators may also impose certain penalties or grant certain incentives. Due to timing and other differences in the collection of electric utility revenue, these accounting principles require an incurred cost that would otherwise be charged to expense by a non-regulated entity to be capitalized as a regulatory asset if it is probable that the cost is recoverable through future rates; and conversely the accounting principles require recording of a regulatory liability for amounts collected in rates to recover costs expected to be incurred in the future or amounts collected in excess of costs incurred and refundable to customers. As disclosed by management, management assesses at the end of each reporting period whether regulatory assets are probable of future recovery by considering factors such as the current regulatory environment, the issuance of rate orders on recovery of the specific or a similar incurred cost to the Company or other rate-regulated entities, and other factors that would indicate that the regulator will treat an incurred cost as allowable for ratemaking purposes. As of December 31, 2023, $11.4 billion was recorded in regulatory assets and $10.2 billion was recorded in regulatory liabilities.

The principal considerations for our determination that performing procedures relating to the Company's accounting for the effects of rate regulation is a critical audit matter are a high degree of auditor effort in performing procedures and evaluating audit evidence related to (i) accounting for the effect of rate regulation on regulatory assets and liabilities and (ii) management’s assessment of the recoverability and settlement of existing and new regulatory assets and liabilities.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the Company's regulatory accounting process, including controls over management’s assessment of the recoverability and settlement of existing and new regulatory assets and liabilities. These procedures also included, among others (i) obtaining and evaluating the Company's correspondence with regulators; (ii) evaluating management's assessment regarding the probability of recovery of regulatory assets and settlement of regulatory liabilities at the balance sheet date; (iii) evaluating the appropriateness of the accounting for the effects of the rate regulation; (iv) evaluating the sufficiency of the disclosure; and (v) testing, on a sample basis, the calculation of regulatory assets and regulatory liabilities based on provisions outlined in the rate orders.

/s/PricewaterhouseCoopers LLP

Los Angeles, California

February 22, 2024

We have served as the Company’s auditor since 2002.

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Southern California Edison Company

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Southern California Edison Company and its subsidiaries (the “Company”) as of December 31, 2023 and 2022, and the related consolidated statements of income, of comprehensive income, of changes in equity and of cash flows for each of the three years in the period ended December 31, 2023, including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were communicated or required to be communicated to the audit committee and that (i) relate to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Wildfire-Related Claims - 2017/2018 Wildfire/Mudslide Events

As described in Note 12 to the consolidated financial statements, the Thomas Fire, the Koenigstein Fire, the Montecito Mudslides and the Woolsey Fire (collectively, the "2017/2018 Wildfire/Mudslide Events") within the Company's service territory caused loss of life, substantial damage to both residential and business properties, and service outages for the Company's customers. Numerous claims related to wildfire events have been initiated against the Company. The Company has incurred material losses in connection with the 2017/2018 Wildfire/Mudslide Events. As disclosed by management, management records loss contingencies when it determines that the outcome of future events is probable of

occurring and when the amount of the loss can be reasonably estimated. As of December 31, 2023, the Company had paid $8.7 billion under executed settlements, had $78 million to be paid under executed settlements, including $62 million to be paid under the Safety and Enforcement Division agreement, and had $637 million of estimated losses for remaining alleged and potential claims reflected on its consolidated balance sheets related to the 2017/2018 Wildfire/Mudslide Events. As of the same date, the Company had assets for expected recoveries through Federal Energy Regulatory Commission (FERC) electric rates of $37 million on its consolidated balance sheets and had exhausted expected insurance recoveries related to the 2017/2018 Wildfire/Mudslide Events. Each reporting period, management reviews the Company’s loss estimates for remaining alleged and potential claims related to wildfire events. The process for estimating losses associated with alleged and potential wildfire related claims requires management to exercise significant judgment based on a number of assumptions and subjective factors, including, but not limited to: estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, the status of and developments in the course of litigation, and prior experience litigating and settling wildfire litigation claims. As additional information becomes available, management's estimates and assumptions regarding the causes and financial impact of wildfire events may change. For the year ended December 31, 2023 management recorded charges for wildfire claims of $630 million and expected revenue from FERC customers of $37 million. The resulting pre-tax charge to earnings was $593 million ($428 million after-tax).

The principal considerations for our determination that performing procedures relating to the wildfire-related claims from the 2017/2018 Wildfire/Mudslide Events is a critical audit matter are (i) the significant judgment by management when determining whether the outcome of future events is probable of occurring and whether the amount of the loss can be reasonably estimated as well as in estimating losses associated with alleged and potential claims related to wildfire events and (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating management's significant assumptions related to estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, and prior experience litigating and settling wildfire litigation claims.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management's assessment of loss contingencies associated with alleged and potential claims related to wildfire events. These procedures also included, among others (i) obtaining and evaluating the letters of audit inquiry with internal and external legal counsel; (ii) assessing the reasonableness of management's assessment regarding whether the outcome of future events is probable of occurring and whether the amount of the loss can be reasonably estimated; (iii) evaluating the appropriateness of the methods used by management in estimating losses associated with alleged and potential claims related to wildfire events; (iv) evaluating the reasonableness of the significant assumptions related to estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, and prior experience litigating and settling wildfire litigation claims; and (v) testing, on a sample basis, damage claim settlements. Evaluating management’s assumptions involved evaluating whether the assumptions used by management were reasonable considering (i) current damage claim settlements; (ii) past wildfire litigation history; and (iii) third-party source data.

Accounting for the Effects of Rate Regulation

As described in Notes 1 and 11 to the consolidated financial statements, the Company's accounting policies conform to accounting principles generally accepted in the United States of America, including the accounting principles for rate-regulated enterprises, which reflect the ratemaking policies of the California Public Utility Commission (CPUC) and the FERC. Management applies authoritative guidance for rate-regulated enterprises to the portion of the Company’s operations in which regulators set rates at levels intended to recover the estimated costs of providing service, plus a return on net investments in assets, or rate base. Regulators may also impose certain penalties or grant certain incentives. Due to timing and other differences in the collection of electric utility revenue, these accounting principles require an incurred cost that would otherwise be charged to expense by a non-regulated entity to be capitalized as a regulatory asset if it is probable that the cost is recoverable through future rates; and conversely the accounting principles require recording of a regulatory liability for amounts collected in rates to recover costs expected to be incurred in the future or amounts collected in excess of costs incurred and refundable to customers. As disclosed by management, management assesses at the end of each reporting period whether regulatory assets are probable of future recovery by considering factors such as the current regulatory environment, the issuance of rate orders on recovery of the specific or a similar

incurred cost to the Company or other rate-regulated entities, and other factors that would indicate that the regulator will treat an incurred cost as allowable for ratemaking purposes. As of December 31, 2023, $11.4 billion was recorded in regulatory assets and $10.2 billion was recorded in regulatory liabilities.

The principal considerations for our determination that performing procedures relating to the Company's accounting for the effects of rate regulation is a critical audit matter are a high degree of auditor effort in performing procedures and evaluating audit evidence related to (i) accounting for the effect of rate regulation on regulatory assets and liabilities and (ii) management’s assessment of the recoverability and settlement of existing and new regulatory assets and liabilities.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the Company's regulatory accounting process, including controls over management’s assessment of the recoverability and settlement of existing and new regulatory assets and liabilities. These procedures also included, among others (i) obtaining and evaluating the Company's correspondence with regulators; (ii) evaluating management's assessment regarding the probability of recovery of regulatory assets and settlement of regulatory liabilities at the balance sheet date; (iii) evaluating the appropriateness of the accounting for the effects of the rate regulation; (iv) evaluating the sufficiency of the disclosure; and (v) testing, on a sample basis, the calculation of regulatory assets and regulatory liabilities based on provisions outlined in the rate orders.

/s/PricewaterhouseCoopers LLP

Los Angeles, California

February 22, 2024

We have served as the Company’s auditor since 2002.