UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
R	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended March 31, 2013
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from                        to

Commission File Number	Exact Name of Registrant as specified in its charter	State or Other Jurisdiction of Incorporation or Organization	IRS Employer Identification Number
1-9936	EDISON INTERNATIONAL	California	95-4137452
1-2313	SOUTHERN CALIFORNIA EDISON COMPANY	California	95-1240335

EDISON INTERNATIONAL	SOUTHERN CALIFORNIA EDISON COMPANY
2244 Walnut Grove Avenue (P.O. Box 976) Rosemead, California 91770 (Address of principal executive offices)	2244 Walnut Grove Avenue (P.O. Box 800) Rosemead, California 91770 (Address of principal executive offices)
(626) 302-2222 (Registrant's telephone number, including area code)	(626) 302-1212 (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Edison International        Yes þ No oSouthern California Edison Company    Yes þ No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Edison International        Yes þ No oSouthern California Edison Company    Yes þ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of "accelerated filer," "large accelerated filer," and "smaller reporting company" in Rule 12b-12 of the Exchange Act. (Check One):
Edison International	Large Accelerated Filer þ	Accelerated Filer ¨	Non-accelerated Filer ¨	Smaller Reporting Company ¨
Southern California Edison Company	Large Accelerated Filer ¨	Accelerated Filer ¨	Non-accelerated Filer þ	Smaller Reporting Company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Edison International        Yes ¨ No þSouthern California Edison Company    Yes ¨ No þ

Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date:

Common Stock outstanding as of April 26, 2013:
Edison International	325,811,206 shares
Southern California Edison Company	434,888,104 shares

TABLE OF CONTENTS

GLOSSARY			iii
PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS			2
	Edison International Consolidated Statements of Income		2
	Edison International Consolidated Statements of Comprehensive Income		3
	Edison International Consolidated Balance Sheets		4
	Edison International Consolidated Statements of Cash Flows		6
	SCE Consolidated Statements of Income		9
	SCE Consolidated Statements of Comprehensive Income		9
	SCE Consolidated Balance Sheets		10
	SCE Consolidated Statements of Cash Flows		12
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS			13
	Note 1. Summary of Significant Accounting Policies		13
	Note 2. Consolidated Statements of Changes in Equity		15
	Note 3. Variable Interest Entities		17
	Note 4. Fair Value Measurements		18
	Note 5. Debt and Credit Agreements		24
	Note 6. Derivative Instruments		24
	Note 7. Income Taxes		26
	Note 8. Compensation and Benefit Plans		27
	Note 9. Commitments and Contingencies		28
	Note 10. Accumulated Other Comprehensive Loss		34
	Note 11. Supplemental Cash Flows Information		34
	Note 12. Preferred and Preference Stock of Utility		34
	Note 13. Regulatory Assets and Liabilities		35
	Note 14. Other Investments		36
	Note 15. Interest and Other Income and Expenses		37
	Note 16. Discontinued Operations		37
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS			39
FORWARD-LOOKING STATEMENTS			39
MANAGEMENT OVERVIEW			41
	Highlights of Operating Results		41
	San Onofre Outage, Inspection and Repair Issues		42
	Capital Program		46
	EME Chapter 11 Bankruptcy Filing		46
RESULTS OF OPERATIONS			46
	SCE		46
		Utility Earning Activities	47
		Utility Cost-Recovery Activities	48
		Supplemental Operating Revenue Information	48
		Income Taxes	48
	Edison International Parent and Other		49
		Income (Loss) from Discontinued Operations	49

i

LIQUIDITY AND CAPITAL RESOURCES			49
	SCE		49
		Available Liquidity	49
		Regulatory Proceedings	49
		Dividend Restrictions	50
		Margin and Collateral Deposits	50
	Edison International Parent and Other		50
	Historical Cash Flows		51
		SCE	51
		Edison International Parent and Other	52
	Contingencies		53
		Environmental Remediation	53
MARKET RISK EXPOSURES			53
	Commodity Price Risk		53
	Credit Risk		53
CRITICAL ACCOUNTING ESTIMATES AND POLICIES			54
NEW ACCOUNTING GUIDANCE			54
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK			54
ITEM 4. CONTROLS AND PROCEDURES			54
	Disclosure Controls and Procedures		54
	Changes in Internal Control Over Financial Reporting		54
	Jointly Owned Utility Plant		54
PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS			55
	EME Chapter 11 Filing		55
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS			55
	Purchases of Equity Securities by Edison International and Affiliated Purchasers		55
	Purchases of Equity Securities by Southern California Edison Company and Affiliated Purchasers		55
ITEM 6. EXHIBITS			56
SIGNATURES			57

This is a combined Form 10-Q separately filed by Edison International and Southern California Edison Company. Information contained herein relating to an individual company is filed by such company on its own behalf. Each company makes representations only as to itself and makes no other representation whatsoever as to any other company.

ii

GLOSSARY

The following terms and abbreviations appearing in the text of this report have the meanings indicated below.

2012 Form 10-K	Edison International's and SCE's combined Annual Report on Form 10-K for the year-ended December 31, 2012
APS	Arizona Public Service Company
ARO(s)	asset retirement obligation(s)
BACT	best available control technology
Bankruptcy Code	Chapter 11 of the United States Bankruptcy Code
Bankruptcy Court	United States Bankruptcy Court for the Northern District of Illinois, Eastern Division
Bcf	billion cubic feet
CAA	Clean Air Act
CAISO	California Independent System Operator
CARB	California Air Resources Board
CDWR	California Department of Water Resources
CEC	California Energy Commission
CPUC	California Public Utilities Commission
CRRs	congestion revenue rights
DOE	U.S. Department of Energy
EME	Edison Mission Energy
EMG	Edison Mission Group Inc.
EPS	earnings per share
ERRA	energy resource recovery account
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
FIP(s)	federal implementation plan(s)
Four Corners	coal fueled electric generating facility located in Farmington, New Mexico in which SCE holds a 48% ownership interest
GAAP	generally accepted accounting principles
GHG	greenhouse gas
GRC	general rate case
GWh	gigawatt-hours
IRS	Internal Revenue Service
ISO	Independent System Operator
kWh(s)	kilowatt-hour(s)
MD&A	Management's Discussion and Analysis of Financial Condition and Results of Operations in this report
MHI	Mitsubishi Heavy Industries, Inc.
Mohave	two coal fueled electric generating facilities that no longer operate located in Clark County, Nevada in which SCE holds a 56% ownership interest
Moody's	Moody's Investors Service
MW	megawatts
MWh	megawatt-hours
NAAQS	national ambient air quality standards
NERC	North American Electric Reliability Corporation
Ninth Circuit	U.S. Court of Appeals for the Ninth Circuit
NRC	Nuclear Regulatory Commission

iii

NSR	New Source Review
Palo Verde	large pressurized water nuclear electric generating facility located near Phoenix, Arizona in which SCE holds a 15.8% ownership interest
PBOP(s)	postretirement benefits other than pension(s)
Petition Date	December 17, 2012 (date on which EME and certain of its wholly-owned subsidiaries filed for protection under Chapter 11 of the Bankruptcy Code)
PG&E	Pacific Gas & Electric Company
PSD	Prevention of Significant Deterioration
QF(s)	qualifying facility(ies)
ROE	return on equity
S&P	Standard & Poor's Ratings Services
San Onofre	large pressurized water nuclear electric generating facility located in south San Clemente, California in which SCE holds a 78.21% ownership interest
SCE	Southern California Edison Company
SCR	selective catalytic reduction equipment
SDG&E	San Diego Gas & Electric
SEC	U.S. Securities and Exchange Commission
SED	Safety and Enforcement Division of the CPUC, formerly known as the Consumer Protection and Safety Division or CPSD
Settlement Transaction	Certain transactions related to EME's Chapter 11 bankruptcy filing that the parties to the Support Agreement have by virtue of that agreement agreed to further document and support
Support Agreement	Transaction Support Agreement dated as of December 16, 2012 by and among Edison Mission Energy, Edison International and the Noteholders named therein
US EPA	U.S. Environmental Protection Agency
VIE(s)	variable interest entity(ies)

iv

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1

PART I.    FINANCIAL INFORMATION

ITEM 1.     FINANCIAL STATEMENTS

Consolidated Statements of Income	Edison International
	Three months ended March 31,
(in millions, except per-share amounts, unaudited)	2013			2012
Operating revenue	$	2,632		$	2,415
Fuel	73			77
Purchased power	780			615
Operation and maintenance	873			946
Depreciation, decommissioning and amortization	414			388
Total operating expenses	2,140			2,026
Operating income	492			389
Interest and other income	34			34
Interest expense	(131		)	(126		)
Other expenses	(11		)	(10		)
Income from continuing operations before income taxes	384			287
Income tax expense	98			91
Income from continuing operations	286			196
Income (loss) from discontinued operations, net of tax	12			(84		)
Net income	298			112
Dividends on preferred and preference stock of utility	27			19
Net income attributable to Edison International common shareholders	$	271		$	93
Amounts attributable to Edison International common shareholders:
Income from continuing operations, net of tax	$	259		$	177
Income (loss) from discontinued operations, net of tax	12			(84		)
Net income attributable to Edison International common shareholders	$	271		$	93
Basic earnings (loss) per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding	326			326
Continuing operations	$	0.79		$	0.54
Discontinued operations	0.04			(0.26		)
Total	$	0.83		$	0.28
Diluted earnings (loss) per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding, including effect of dilutive securities	329			329
Continuing operations	$	0.78		$	0.54
Discontinued operations	0.04			(0.26		)
Total	$	0.82		$	0.28
Dividends declared per common share	$	0.3375		$	0.325

The accompanying notes are an integral part of these consolidated financial statements.

2

Consolidated Statements of Comprehensive Income	Edison International
	Three months ended March 31,
(in millions, unaudited)	2013			2012
Net income	$	298		$	112
Other comprehensive income (loss), net of tax:
Pension and postretirement benefits other than pensions:
Net loss arising during the period, net of income tax benefit of $4 for the three months ended March 31, 2013	(2		)	—
Amortization of net loss included in net income, net of income tax expense of $1 and $4 for the three months ended March 31, 2013 and 2012, respectively	2			7
Unrealized gain (loss) on derivatives qualified as cash flow hedges:
Unrealized holding gain arising during the period, net of income tax expense of $17 for the three months ended March 31, 2012	—			25
Reclassification adjustments included in net income, net of income tax benefit of $8 for the three months ended March 31, 2012	—			(11		)
Other comprehensive income, net of tax	—			21
Comprehensive income	298			133
Less: Comprehensive income attributable to noncontrolling interests	27			19
Comprehensive income attributable to Edison International	$	271		$	114

The accompanying notes are an integral part of these consolidated financial statements.

3

Consolidated Balance Sheets	Edison International
(in millions, unaudited)	March 31, 2013		December 31, 2012
ASSETS
Cash and cash equivalents	$	115	$	170
Receivables, less allowances of $67 and $75 for uncollectible accounts at respective dates	797		762
Accrued unbilled revenue	403		550
Inventory	351		340
Prepaid taxes	26		22
Derivative assets	111		129
Margin and collateral deposits	10		8
Regulatory assets	672		572
Other current assets	185		119
Total current assets	2,670		2,672
Nuclear decommissioning trusts	4,246		4,048
Investments in unconsolidated affiliates	2		2
Other investments	199		184
Total investments	4,447		4,234
Utility property, plant and equipment, less accumulated depreciation of $7,662 and $7,424 at respective dates	30,673		30,200
Nonutility property, plant and equipment, less accumulated depreciation of $126 and $123 at respective dates	72		73
Total property, plant and equipment	30,745		30,273
Derivative assets	81		85
Restricted deposits	4		4
Regulatory assets	6,518		6,422
Other long-term assets	690		704
Total long-term assets	7,293		7,215
Total assets	$	45,155	$	44,394

The accompanying notes are an integral part of these consolidated financial statements.

4

Consolidated Balance Sheets	Edison International
(in millions, except share amounts, unaudited)	March 31, 2013			December 31, 2012
LIABILITIES AND EQUITY
Short-term debt	$	420		$	175
Current portion of long-term debt	800			—
Accounts payable	1,100			1,423
Accrued taxes	134			61
Accrued interest	126			176
Customer deposits	196			193
Derivative liabilities	107			126
Regulatory liabilities	443			536
Deferred income taxes	174			64
Other current liabilities	779			990
Total current liabilities	4,279			3,744
Long-term debt	8,829			9,231
Deferred income taxes	6,289			6,127
Deferred investment tax credits	103			104
Customer advances	150			149
Derivative liabilities	1,014			939
Pensions and benefits	2,610			2,614
Asset retirement obligations	2,824			2,782
Regulatory liabilities	5,470			5,214
Other deferred credits and other long-term liabilities	2,278			2,299
Total deferred credits and other liabilities	20,738			20,228
Total liabilities	33,846			33,203
Commitments and contingencies (Note 9)
Common stock, no par value (800,000,000 shares authorized; 325,811,206 shares issued and outstanding at each date)	2,380			2,373
Accumulated other comprehensive loss	(87		)	(87		)
Retained earnings	7,262			7,146
Total Edison International's common shareholders' equity	9,555			9,432
Preferred and preference stock of utility	1,754			1,759
Total noncontrolling interests	1,754			1,759
Total equity	11,309			11,191
Total liabilities and equity	$	45,155		$	44,394

The accompanying notes are an integral part of these consolidated financial statements.

5

Consolidated Statements of Cash Flows	Edison International
	Three months ended March 31,
(in millions, unaudited)	2013			2012
Cash flows from operating activities:
Net income	$	298		$	112
Less: Income (loss) from discontinued operations	12			(84		)
Income from continuing operations	286			196
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	414			388
Regulatory impacts of net nuclear decommissioning trust earnings	25			77
Other amortization and other	17			19
Stock-based compensation	6			8
Deferred income taxes and investment tax credits	174			30
Proceeds from U.S. treasury grants	—			29
Changes in operating assets and liabilities:
Receivables	(38		)	88
Inventory	(11		)	10
Margin and collateral deposits, net of collateral received	(2		)	(1		)
Prepaid taxes	(5		)	11
Other current assets	82			17
Accounts payable	(65		)	(47		)
Accrued taxes	60			170
Other current liabilities	(255		)	(302		)
Derivative assets and liabilities, net	79			273
Regulatory assets and liabilities, net	(199		)	(254		)
Other assets	(13		)	(9		)
Other liabilities	(49		)	72
Operating cash flows from continuing operations	506			775
Operating cash flows from discontinued operations, net	—			(98		)
Net cash provided by operating activities	506			677
Cash flows from financing activities:
Long-term debt issued	398			395
Long-term debt issuance costs	(4		)	(4		)
Long-term debt repaid	(1		)	(2		)
Preference stock issued, net	387			345
Preference stock redeemed	(400		)	—
Short-term debt financing, net	245			(86		)
Settlements of stock-based compensation, net	(32		)	(22		)
Dividends to noncontrolling interests	(30		)	(14		)
Dividends paid	(110		)	(106		)
Financing cash flows from continuing operations	453			506
Financing cash flows from discontinued operations, net	—			279
Net cash provided by financing activities	$	453		$	785

The accompanying notes are an integral part of these consolidated financial statements.

6

Consolidated Statements of Cash Flows	Edison International
	Three months ended March 31,
(in millions, unaudited)	2013			2012
Cash flows from investing activities:
Capital expenditures	$	(979	)	$	(1,189	)
Proceeds from sale of nuclear decommissioning trust investments	435			602
Purchases of nuclear decommissioning trust investments and other	(466		)	(684		)
Other investments and customer advances for construction	(4		)	(3		)
Investing cash flows from continuing operations	(1,014		)	(1,274		)
Investing cash flows from discontinued operations, net	—			(174		)
Net cash used by investing activities	(1,014		)	(1,448		)
Net (decrease) increase in cash and cash equivalents	(55		)	14
Cash and cash equivalents at beginning of period	170			1,469
Cash and cash equivalents at end of period	115			1,483
Cash and cash equivalents from discontinued operations	—			1,300
Cash and cash equivalents from continuing operations	$	115		$	183

The accompanying notes are an integral part of these consolidated financial statements.

7

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8

Consolidated Statements of Income Southern California Edison Company

	Three months ended March 31,
(in millions, unaudited)	2013			2012
Operating revenue	$	2,629		$	2,412
Fuel	73			77
Purchased power	780			615
Operation and maintenance	785			851
Depreciation, decommissioning and amortization	414			389
Property and other taxes	79			83
Total operating expenses	2,131			2,015
Operating income	498			397
Interest and other income	32			33
Interest expense	(125		)	(121		)
Other expenses	(10		)	(9		)
Income before income taxes	395			300
Income tax expense	112			99
Net income	283			201
Less: Dividends on preferred and preference stock	27			19
Net income available for common stock	$	256		$	182

Consolidated Statements of Comprehensive Income
	Three months ended March 31,
(in millions, unaudited)	2013			2012
Net income	$	283		$	201
Other comprehensive income (loss), net of tax:
Pension and postretirement benefits other than pensions:
Net loss arising during the period, net of income tax benefit of $3 for the three months ended March 31, 2013	(4		)	—
Amortization of net loss included in net income, net of income tax expense of $1 and $3 for the three months ended March 31, 2013 and 2012, respectively	1			3
Other comprehensive income (loss), net of tax	(3		)	3
Comprehensive income	$	280		$	204

The accompanying notes are an integral part of these consolidated financial statements.

9

Consolidated Balance Sheets Southern California Edison Company

(in millions, unaudited)	March 31, 2013		December 31, 2012
ASSETS
Cash and cash equivalents	$	27	$	45
Receivables, less allowances of $67 and $75 for uncollectible accounts at respective dates	754		755
Accrued unbilled revenue	403		550
Inventory	351		340
Prepaid taxes	30		48
Derivative assets	111		129
Regulatory assets	672		572
Other current assets	194		123
Total current assets	2,542		2,562
Nuclear decommissioning trusts	4,246		4,048
Other investments	125		116
Total investments	4,371		4,164
Utility property, plant and equipment, less accumulated depreciation of $7,662 and $7,424 at respective dates	30,673		30,200
Nonutility property, plant and equipment, less accumulated depreciation of $120 and $117 at respective dates	70		70
Total property, plant and equipment	30,743		30,270
Derivative assets	81		85
Regulatory assets	6,518		6,422
Other long-term assets	537		531
Total long-term assets	7,136		7,038
Total assets	$	44,792	$	44,034

The accompanying notes are an integral part of these consolidated financial statements.

10

Consolidated Balance Sheets Southern California Edison Company

(in millions, except share amounts, unaudited)	March 31, 2013			December 31, 2012
LIABILITIES AND EQUITY
Short-term debt	$	404		$	175
Current portion of long-term debt	800			—
Accounts payable	1,069			1,297
Accrued taxes	131			72
Accrued interest	125			172
Customer deposits	196			193
Derivative liabilities	107			126
Regulatory liabilities	443			536
Deferred income taxes	174			81
Other current liabilities	654			861
Total current liabilities	4,103			3,513
Long-term debt	8,427			8,828
Deferred income taxes	6,781			6,669
Deferred investment tax credits	103			104
Customer advances	150			149
Derivative liabilities	1,014			939
Pensions and benefits	2,234			2,245
Asset retirement obligations	2,824			2,782
Regulatory liabilities	5,470			5,214
Other deferred credits and other long-term liabilities	1,844			1,848
Total deferred credits and other liabilities	20,420			19,950
Total liabilities	32,950			32,291
Commitments and contingencies (Note 9)
Common stock, no par value (560,000,000 shares authorized; 434,888,104 shares issued and outstanding at each date)	2,168			2,168
Additional paid-in capital	579			581
Accumulated other comprehensive loss	(32		)	(29		)
Retained earnings	7,332			7,228
Total common shareholder's equity	10,047			9,948
Preferred and preference stock	1,795			1,795
Total equity	11,842			11,743
Total liabilities and equity	$	44,792		$	44,034

The accompanying notes are an integral part of these consolidated financial statements.

11

Consolidated Statements of Cash Flows Southern California Edison Company

	Three months ended March 31,
(in millions, unaudited)	2013			2012
Cash flows from operating activities:
Net income	$	283		$	201
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	414			389
Regulatory impacts of net nuclear decommissioning trust earnings	25			77
Other amortization	18			20
Stock-based compensation	4			4
Deferred income taxes and investment tax credits	150			156
Proceeds from U.S. treasury grants	—			29
Changes in operating assets and liabilities:
Receivables	1			90
Inventory	(11		)	11
Margin and collateral deposits, net of collateral received	(2		)	(1		)
Prepaid taxes	18			(1		)
Other current assets	79			19
Accounts payable	(63		)	(53		)
Accrued taxes	59			62
Other current liabilities	(247		)	(185		)
Derivative assets and liabilities, net	79			336
Regulatory assets and liabilities, net	(199		)	(317		)
Other assets	(15		)	(10		)
Other liabilities	(32		)	(52		)
Net cash provided by operating activities	561			775
Cash flows from financing activities:
Long-term debt issued	398			395
Long-term debt issuance costs	(4		)	(4		)
Long-term debt repaid	(1		)	(1		)
Preference stock issued, net	387			345
Preference stock redeemed	(400		)	—
Short-term debt financing, net	229			(89		)
Settlements of stock-based compensation, net	(29		)	(15		)
Dividends paid	(150		)	(131		)
Net cash provided by financing activities	430			500
Cash flows from investing activities:
Capital expenditures	(979		)	(1,189		)
Proceeds from sale of nuclear decommissioning trust investments	435			602
Purchases of nuclear decommissioning trust investments and other	(466		)	(684		)
Customer advances for construction and other investments	1			2
Net cash used by investing activities	(1,009		)	(1,269		)
Net (decrease) increase in cash and cash equivalents	(18		)	6
Cash and cash equivalents, beginning of period	45			57
Cash and cash equivalents, end of period	$	27		$	63

The accompanying notes are an integral part of these consolidated financial statements.

12

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1.    Summary of Significant Accounting Policies

Organization and Basis of Presentation

Edison International is the parent holding company of Southern California Edison Company ("SCE"). SCE is an investor-owned public utility primarily engaged in the business of supplying electricity to an approximately 50,000 square mile area of southern California. Edison International is also the parent company of nonutility subsidiaries that are engaged in competitive businesses related to the delivery or use of electricity. Such competitive business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to Edison International Parent and Other refer to Edison International Parent and its nonutility subsidiaries, including EME. SCE's consolidated financial statements include the accounts of SCE and its wholly owned and controlled subsidiaries. All intercompany transactions have been eliminated from the consolidated financial statements.

Edison International's and SCE's significant accounting policies were described in Note 1 of "Notes to Consolidated Financial Statements" included in the 2012 Form 10-K. The same accounting policies are followed for interim reporting purposes, with the exception of accounting principles adopted as of January 1, 2013, discussed below in "—New Accounting Guidance." This quarterly report should be read in conjunction with the financial statements and notes included in the 2012 Form 10-K.

Except as indicated, amounts in the notes to the consolidated financial statements relate to continuing operations of Edison International. See Note 16 for information related to discontinued operations.

In the opinion of management, all adjustments, consisting of recurring accruals, have been made that are necessary to fairly state the consolidated financial position, results of operations and cash flows in accordance with accounting principles generally accepted in the United States of America for the periods covered by this quarterly report on Form 10-Q. The results of operations for the three month period ended March 31, 2013 are not necessarily indicative of the operating results for the full year.

The December 31, 2012 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Cash Equivalents

Cash equivalents included investments in money market funds. Generally, the carrying value of cash equivalents equals the fair value, as these investments have original maturities of three months or less. The cash equivalents were as follows:

	Edison International				SCE
(in millions)	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Money market funds	$	58	$	107	$	5	$	5

Cash is temporarily invested until required for check clearing from the primary disbursement accounts. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period as follows:

	Edison International				SCE
(in millions)	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Cash reclassified to accounts payable	$	165	$	247	$	165	$	242

13

Inventory

Inventory is stated at the lower of cost or market, cost being determined by the weighted-average cost method for fuel, and the average cost method for materials and supplies. Inventory consisted of the following:

(in millions)	March 31, 2013		December 31, 2012
Materials, supplies and spare parts	$	333	$	319
Fuel	18		21
Total inventory	$	351	$	340

Greenhouse Gas Emission Allowances

SCE is allocated greenhouse gas ("GHG") allowances annually which it is then required to submit to quarterly auctions. GHG proceeds from the auction are recorded as a regulatory liability to be refunded to customers. SCE purchases GHG allowances from quarterly auctions or bilateral parties to satisfy its compliance obligations and recovers such costs of GHG from customers. GHG allowances held for use are classified as "Other current assets" on the consolidated balance sheets and are stated at the lower of weighted-average cost or market.

Earnings Per Share

Edison International computes earnings per share ("EPS") using the two-class method, which is an earnings allocation formula that determines EPS for each class of common stock and participating security. Edison International's participating securities are stock-based compensation awards payable in common shares, including stock options, performance shares and restricted stock units, which earn dividend equivalents on an equal basis with common shares. Stock options awarded during the period 2003 through 2006 received dividend equivalents. EPS attributable to Edison International common shareholders was computed as follows:

	Three months ended March 31,
(in millions)	2013		2012
Basic earnings per share – continuing operations:
Income from continuing operations available to common shareholders	$	259	$	177
Weighted average common shares outstanding	326		326
Basic earnings per share – continuing operations	$	0.79	$	0.54
Diluted earnings per share – continuing operations:
Income from continuing operations available to common shareholders	$	259	$	177
Income impact of assumed conversions	—		—
Income from continuing operations available to common shareholders and assumed conversions	$	259	$	177
Weighted average common shares outstanding	326		326
Incremental shares from assumed conversions	3		3
Adjusted weighted average shares – diluted	329		329
Diluted earnings per share – continuing operations	$	0.78	$	0.54

Stock-based compensation awards to purchase 4,455,669 and 8,602,107 shares of common stock for the three months ended March 31, 2013 and 2012, respectively, were outstanding, but were not included in the computation of diluted earnings per share because the exercise price of the awards was greater than the average market price of the common shares during the respective periods and, therefore, the effect would have been antidilutive.

14

New Accounting Guidance

Accounting Guidance Adopted in 2013

Offsetting Assets and Liabilities

In December 2011 and January 2013, the FASB issued accounting standards updates modifying the disclosure requirements about the nature of an entity's rights of offsetting recognized assets and liabilities in the statement of financial position under master netting agreements and similar arrangements associated with derivative instruments, repurchase agreements and securities lending transactions. The guidance requires increased disclosure of the gross and net recognized assets and liabilities, collateral positions and descriptions of setoff rights. Edison International and SCE adopted this guidance effective January 1, 2013. The adoption of this standard did not impact the consolidated income statements, balance sheets or cash flows of Edison International or SCE. For further information, see Note 6.

Items Reclassified out of Accumulated Other Comprehensive Income

In February 2013, the FASB issued an accounting standards update which requires disclosure related to items reclassified out of AOCI. The guidance requires companies to present separately, for each component of other comprehensive income, current period reclassifications and the remainder of the current-period other comprehensive income. In addition, for certain current period reclassifications, an entity is required to disclose the effect of the item reclassified out of AOCI on the respective line item(s) of net income. Edison International and SCE adopted this guidance effective January 1, 2013. For further information, see Note 10.

Note 2.    Consolidated Statements of Changes in Equity

The following table provides Edison International's changes in equity for the three months ended March 31, 2013:

	Equity Attributable to Edison International											Noncontrolling Interests
(in millions)	Common Stock		Accumulated Other Comprehensive Loss			Retained Earnings			Subtotal			Preferred and Preference Stock			Total Equity
Balance at December 31, 2012	$	2,373	$	(87	)	$	7,146		$	9,432		$	1,759		$	11,191
Net income	—		—			271			271			27			298
Common stock dividends declared ($0.3375 per share)	—		—			(110		)	(110		)	—			(110		)
Dividends, distributions to noncontrolling interests	—		—			—			—			(27		)	(27		)
Stock-based compensation and other	1		—			(33		)	(32		)	—			(32		)
Noncash stock-based compensation and other	6		—			(4		)	2			—			2
Issuance of preference stock	—		—			—			—			387			387
Redemption of preference stock	—		—			(8		)	(8		)	(392		)	(400		)
Balance at March 31, 2013	$	2,380	$	(87	)	$	7,262		$	9,555		$	1,754		$	11,309

In February 2013, SCE redeemed all outstanding shares of Series B and C preference stock and charged the issuance costs to retained earnings.

15

The following table provides Edison International's changes in equity for the three months ended March 31, 2012:

	Equity Attributable to Edison International												Noncontrolling Interests
(in millions)	Common Stock			Accumulated Other Comprehensive Income (Loss)			Retained Earnings			Subtotal			Other		Preferred and Preference Stock			Total Equity
Balance at December 31, 2011	$	2,360		$	(139	)	$	7,834		$	10,055		$	2	$	1,029		$	11,086
Net income	—			—			93			93			—		19			112
Other comprehensive income	—			21			—			21			—		—			21
Contributions from noncontrolling interests	—			—			—			—			238		—			238
Transfer of assets to Capistrano Wind Partners	(50		)	—			—			(50		)	—		—			(50		)
Common stock dividends declared ($0.325 per share)	—			—			(106		)	(106		)	—		—			(106		)
Dividends, distributions to noncontrolling interests and other	—			—			—			—			3		(19		)	(16		)
Stock-based compensation and other	8			—			(36		)	(28		)	—		—			(28		)
Noncash stock-based compensation and other	7			—			(2		)	5			—		—			5
Issuance of preference stock	—			—			—			—			—		345			345
Balance at March 31, 2012	$	2,325		$	(118	)	$	7,783		$	9,990		$	243	$	1,374		$	11,607

The following table provides SCE's changes in equity for the three months ended March 31, 2013:

	Equity Attributable to SCE
(in millions)	Common Stock		Additional Paid-in Capital			Accumulated Other Comprehensive Loss			Retained Earnings			Preferred and Preference Stock			Total Equity
Balance at December 31, 2012	$	2,168	$	581		$	(29	)	$	7,228		$	1,795		$	11,743
Net income	—		—			—			283			—			283
Other comprehensive loss	—		—			(3		)	—			—			(3		)
Dividends declared on common stock	—		—			—			(120		)	—			(120		)
Dividends declared on preferred and preference stock	—		—			—			(27		)	—			(27		)
Stock-based compensation and other	—		—			—			(29		)	—			(29		)
Noncash stock-based compensation and other	—		3			—			5			—			8
Issuance of preference stock	—		(13		)	—			—			400			387
Redemption of preference stock	—		8			—			(8		)	(400		)	(400		)
Balance at March 31, 2013	$	2,168	$	579		$	(32	)	$	7,332		$	1,795		$	11,842

In February 2013, SCE redeemed all outstanding shares of Series B and C preference stock and charged the issuance costs to retained earnings.

16

The following table provides SCE's changes in equity for the three months ended March 31, 2012:

	Equity Attributable to SCE
(in millions)	Common Stock		Additional Paid-in Capital			Accumulated Other Comprehensive Income (Loss)			Retained Earnings			Preferred and Preference Stock		Total Equity
Balance at December 31, 2011	$	2,168	$	596		$	(24	)	$	6,173		$	1,045	$	9,958
Net income	—		—			—			201			—		201
Other comprehensive income	—		—			3			—			—		3
Dividends declared on common stock	—		—			—			(116		)	—		(116		)
Dividends declared on preferred and preference stock	—		—			—			(19		)	—		(19		)
Stock-based compensation and other	—		6			—			(21		)	—		(15		)
Noncash stock-based compensation and other	—		3			—			3			—		6
Issuance of preference stock	—		(5		)	—			—			350		345
Balance at March 31, 2012	$	2,168	$	600		$	(21	)	$	6,221		$	1,395	$	10,363

Note 3.    Variable Interest Entities

Variable Interest in VIEs that are not Consolidated

Power Purchase Contracts

SCE has power purchase agreements ("PPAs") that have variable interests in VIEs, including tolling agreements through which SCE provides the natural gas to fuel the plants and contracts with qualifying facilities ("QFs") that contain variable pricing provisions based on the price of natural gas. SCE has concluded that it is not the primary beneficiary of these VIEs since it does not control the commercial and operating activities of these entities. In general, because payments for capacity are the primary source of income, the most significant economic activity for these VIEs is the operation and maintenance of the power plants.

As of the balance sheet date, the carrying amount of assets and liabilities in SCE's consolidated balance sheet that relate to its involvement with VIEs result from amounts due under the PPAs or the fair value of those derivative contracts. Under these contracts, SCE recovers the costs incurred through demonstration of compliance with its CPUC-approved long-term power procurement plans. SCE has no residual interest in the entities and has not provided or guaranteed any debt or equity support, liquidity arrangements, performance guarantees or other commitments associated with these contracts other than the purchase commitments described in Note 9 in the 2012 Form 10-K. As a result, there is no significant potential exposure to loss to SCE from its variable interest in these VIEs. The aggregate contracted capacity dedicated to SCE for these VIE projects was 3,578 MW and 2,014 MW at March 31, 2013 and 2012, respectively, and the amounts that SCE paid to these projects were $98 million and $78 million for the three months ended March 31, 2013 and 2012, respectively. These amounts are recoverable in customer rates, subject to reasonableness review. As of March 31, 2013, SCE has additional VIE contracts with future aggregate contracted capacity of 1,837 MW to be delivered starting in June 2013, August 2013 and January 2014.

Unconsolidated Trusts of SCE

SCE Trust I and Trust II were formed in 2012 and 2013, respectively, for the exclusive purpose of issuing the 5.625% and 5.10% trust preference securities, respectively (“trust securities”). The trusts are VIEs. SCE has concluded that it is not the primary beneficiary of these VIEs as it does not have the obligation to absorb the expected losses or the right to receive the expected residual returns of the trusts.

In May 2012, SCE Trust I issued $475 million (aggregate liquidation preference) of 5.625% trust securities (cumulative, liquidation amount of $25 per share) to the public and $10,000 of common stock (100%) to SCE. The trust invested the proceeds of these trust securities in Series F Preference Stock issued by SCE in the principal amount of $475 million (cumulative, $2,500 per share liquidation value) and which have substantially the same payment terms as the trust securities.

In January 2013, SCE Trust II issued $400 million (aggregate liquidation preference) of 5.10% trust securities (cumulative, liquidation amount of $25 per share) to the public and $10,000 of common stock (100%) to SCE. The trust invested the proceeds of these trust securities in Series G Preference Stock issued by SCE in the principal amount of $400 million (cumulative, $2,500 per share liquidation value) and which have substantially the same payment terms as the trust securities.

17

The Series F and Series G Preference Stock and the corresponding trust securities do not have a maturity date. Upon any redemption of any shares of the Series F or Series G Preference Stock, a corresponding dollar amount of trust securities will be redeemed by the applicable trust (for further information see Note 12). The applicable trust will make distributions at the same rate and on the same dates on the applicable series of trust securities when and if the SCE board of directors declares and makes dividend payments on the Series F or Series G Preference Stock. The applicable trusts will use any dividends it receives on the Series F or Series G Preference Stock to make its corresponding distributions on the applicable series of trust securities. If SCE does not make a dividend payment to either trust, SCE would be prohibited from paying dividends on its common stock. SCE has fully and unconditionally guaranteed the payment of the trust securities and trust distributions, if and when SCE pays dividends on the Series F and Series G Preference Stock.

The Trust I balance sheet as of March 31, 2013 and December 31, 2012, consisted of an investment of $475 million in the Series F Preference Stock, $475 million of trust securities and $10,000 of common stock. The trust's income statement consisted of dividend income and dividend distributions of $7 million each for the three months ended March 31, 2013.

The Trust II balance sheet as of March 31, 2013, consisted of an investment of $400 million in the Series G Preference Stock, $400 million of trust securities and $10,000 of common stock. The trust's income statement consisted of dividend income and dividend distributions of $4 million each for the three months ended March 31, 2013.

Note 4.    Fair Value Measurements

Recurring Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (referred to as an “exit price”). Fair value of an asset or liability considers assumptions that market participants would use in pricing the asset or liability, including assumptions about nonperformance risk. As of March 31, 2013 and December 31, 2012, nonperformance risk was not material for Edison International and SCE.

Assets and liabilities are categorized into a three-level fair value hierarchy based on valuation inputs used to determine fair value. The hierarchy gives the highest priority to unadjusted quoted market prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).

18

SCE

The following table sets forth assets and liabilities of SCE that were accounted for at fair value by level within the fair value hierarchy:

	March 31, 2013
(in millions)	Level 1		Level 2		Level 3			Netting and Collateral1			Total
Assets at Fair Value
Money market funds	$	5	$	—	$	—		$	—		$	5
Derivative contracts:
Congestion Revenue Rights	—		—		170			—			170
Electricity	—		3		29			(14		)	18
Tolling	—		—		4			—			4
Subtotal of derivative contracts	—		3		203			(14		)	192
Long-term disability plan	8		—		—			—			8
Nuclear decommissioning trusts:
Stocks2	2,468		—		—			—			2,468
U.S. government and agency securities	571		75		—			—			646
Municipal bonds	—		631		—			—			631
Corporate bonds3	—		408		—			—			408
Short-term investments, primarily cash equivalents4	81		—		—			—			81
Subtotal of nuclear decommissioning trusts	3,120		1,114		—			—			4,234
Total assets	3,133		1,117		203			(14		)	4,439
Liabilities at Fair Value
Derivative contracts:
Electricity	—		—		1			—			1
Natural gas	—		77		—			(41		)	36
Tolling	—		—		1,084			—			1,084
Subtotal of derivative contracts	—		77		1,085			(41		)	1,121
Total liabilities	—		77		1,085			(41		)	1,121
Net assets (liabilities)	$	3,133	$	1,040	$	(882	)	$	27		$	3,318

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	December 31, 2012
(in millions)	Level 1		Level 2		Level 3			Netting and Collateral1			Total
Assets at Fair Value
Money market funds	$	5	$	—	$	—		$	—		$	5
Derivative contracts:
Congestion Revenue Rights	—		—		186			—			186
Electricity	—		—		31			(13		)	18
Natural gas	—		8		—			(2		)	6
Tolling	—		—		4			—			4
Subtotal of derivative contracts	—		8		221			(15		)	214
Long-term disability plan	8		—		—			—			8
Nuclear decommissioning trusts:
Stocks2	2,271		—		—			—			2,271
Municipal bonds	—		644		—			—			644
U.S. government and agency securities	477		126		—			—			603
Corporate bonds3	—		410		—			—			410
Short-term investments, primarily cash equivalents4	121		—		—			—			121
Subtotal of nuclear decommissioning trusts	2,869		1,180		—			—			4,049
Total assets	2,882		1,188		221			(15		)	4,276
Liabilities at Fair Value
Derivative contracts:
Electricity	—		2		5			(2		)	5
Natural gas	—		113		2			(60		)	55
Tolling	—		—		1,005			—			1,005
Subtotal of derivative contracts	—		115		1,012			(62		)	1,065
Total liabilities	—		115		1,012			(62		)	1,065
Net assets (liabilities)	$	2,882	$	1,073	$	(791	)	$	47		$	3,211

¹  Represents the netting of assets and liabilities under master netting agreements and cash collateral across the levels of the fair value hierarchy. Netting among positions classified within the same level is included in that level.

²  Approximately 67% and 66% of SCE's equity investments were located in the United States at March 31, 2013 and December 31, 2012, respectively.

³  At March 31, 2013 and December 31, 2012, SCE's corporate bonds were diversified and included collateralized mortgage obligations and other asset backed securities of $62 million and $56 million, respectively.

⁴  Excludes net receivables of $12 million and net payables of $1 million at March 31, 2013 and December 31, 2012, respectively, of interest and dividend receivables as well as receivables and payables related to SCE's pending securities sales and purchases.

Edison International Parent and Other

Assets measured at fair value consisted of money market funds of $58 million and $107 million at March 31, 2013 and December 31, 2012, respectively, classified as Level 1.

20

SCE Fair Value of Level 3

The following table sets forth a summary of changes in SCE's fair value of Level 3 net derivative assets and liabilities:

	Three months ended March 31,
(in millions)	2013			2012
Fair value of net liabilities at beginning of period	$	(791	)	$	(754	)
Total realized/unrealized gains (losses):
Included in regulatory assets and liabilities1	(82		)	(356		)
Purchases	18			21
Settlements	(27		)	(8		)
Fair value of net liabilities at end of period	$	(882	)	$	(1,097	)
Change during the period in unrealized losses related to assets and liabilities held at the end of the period	$	(66	)	$	(351	)

¹  Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities.

Edison International and SCE recognize the fair value for transfers in and transfers out of each level at the end of each reporting period. There were no transfers between any levels during 2013 and 2012.

Valuation Techniques Used to Determine Fair Value

Level 1

The fair value of Edison International and SCE's Level 1 assets and liabilities is determined using unadjusted quoted prices in active markets that are available at the measurement date for identical assets and liabilities. This level includes exchange-traded equity securities and derivatives, U.S. treasury securities and money market funds.

Level 2

SCE's Level 2 assets and liabilities include fixed income securities and over-the-counter derivatives. The fair value of fixed income securities is determined using a market approach by obtaining quoted prices for similar assets and liabilities in active markets and inputs that are observable, either directly or indirectly, for substantially the full term of the instrument. For further discussion on fixed income securities, see "—Nuclear Decommissioning Trusts" below.

The fair value of SCE's over-the-counter derivative contracts is determined using an income approach. SCE uses standard pricing models to determine the net present value of estimated future cash flows. Inputs to the pricing models include forward published or posted clearing prices from exchanges (New York Mercantile Exchange and Intercontinental Exchange) for similar instruments and discount rates. A primary price source that best represents trade activity for each market is used to develop observable forward market prices in determining the fair value of these positions. Broker quotes, prices from exchanges or comparison to executed trades are used to validate and corroborate the primary price source. These price quotations reflect mid-market prices (average of bid and ask) and are obtained from sources believed to provide the most liquid market for the commodity.

Level 3

The fair value of SCE's Level 3 assets and liabilities is determined using the income approach through various models and techniques that require significant unobservable inputs. This level includes over-the-counter options, tolling arrangements and derivative contracts that trade infrequently such as congestion revenue rights ("CRRs") and long-term power agreements.

Assumptions are made in order to value derivative contracts in which observable inputs are not available. Changes in fair value are based on changes to forward market prices, including extrapolation of short-term observable inputs into forecasted prices for illiquid forward periods. In circumstances where fair value cannot be verified with observable market transactions, it is possible that a different valuation model could produce a materially different estimate of fair value. Modeling methodologies, inputs and techniques are reviewed and assessed as markets continue to develop and more pricing information becomes available and the fair value is adjusted when it is concluded that a change in inputs or techniques would result in a new valuation that better reflects the fair value of those derivative contracts.

21

Level 3 Valuation Process

The process of determining fair value is the responsibility of SCE's risk management department, which report to SCE's chief financial officer. This department obtains observable and unobservable inputs through broker quotes, exchanges and internal valuation techniques that use both standard and proprietary models to determine fair value. Each reporting period, the risk and finance departments collaborate to determine the appropriate fair value methodologies and classifications for each derivative. Inputs are validated for reasonableness by comparison against prior prices, other broker quotes and volatility fluctuation thresholds. Inputs used and valuations are reviewed period-over-period and compared with market conditions to determine reasonableness.

The following table sets forth SCE's valuation techniques and significant unobservable inputs used to determine fair value for Level 3 assets and liabilities:

	Fair Value (in millions)							Significant	Range
March 31, 2013	Assets			Liabilities			Valuation Technique(s)	Unobservable Input	(Weighted Average)
Electricity:
Options	$	35		$	10		Option model	Volatility of gas prices	24% - 29% (27%)
								Volatility of power prices	28% - 58% (40%)
								Power prices	$47.30 - $60.70 ($52.90)
Forwards	4			1			Discounted cash flow	Power prices	$11.00 - $52.00 ($40.10)
CRRs	170			—			Market simulation model	Load forecast	7,597 MW - 26,612 MW
								Power prices	$(13.90) - $226.75
								Gas prices	$2.95 - $7.78
Tolling	4			1,084			Option model	Volatility of gas prices	16% - 29% (20%)
								Volatility of power prices	25% - 58% (28%)
								Power prices	$42.40 - $76.50 ($54.90)
Netting	(10		)	(10		)
Total derivative contracts	$	203		$	1,085

	Fair Value (in millions)							Significant	Range
December 31, 2012	Assets			Liabilities			Valuation Technique(s)	Unobservable Input	(Weighted Average)
Electricity:
Options	$	40		$	12		Option model	Volatility of gas prices	25% - 36% (33%)
								Volatility of power prices	29% - 64% (42%)
								Power prices	$41.70 - $59.20 ($47.00)
Forwards	2			4			Discounted cash flow	Power prices	$23.10 - $44.90 ($31.10)
CRRs	186			—			Market simulation model	Load forecast	7,597 MW - 26,612 MW
								Power prices	$(13.90) - $226.75
								Gas prices	$2.95 - $7.78
Gas options	—			2			Option model	Volatility of gas prices	28% - 36% (34%)
Tolling	4			1,005			Option model	Volatility of gas prices	17% - 36% (22%)
								Volatility of power prices	26% - 64% (29%)
								Power prices	$35.00 - $84.10 ($55.40)
Netting	(11		)	(11		)
Total derivative contracts	$	221		$	1,012

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Level 3 Fair Value Sensitivity

Gas Options, Electricity Options, and Tolling Arrangements

The fair values of SCE's option contracts and tolling arrangements contain intrinsic value and time value. Intrinsic value is the difference between the market price and strike price of the underlying commodity. Time value is made up of several components, including volatility, time to expiration, and interest rates. The fair value of option contracts changes as the underlying commodity price moves away or towards the strike price. The option model for tolling arrangements reflects plant specific information such as operating and start-up costs.

For tolling arrangements and certain gas and power option contracts where SCE is the buyer, increases in volatility of the underlying commodity prices would result in increases to fair value as it represents greater price movement risk. As power and gas prices increase, the fair value of the option contracts and tolling arrangements tends to increase. The valuation of power option contracts and tolling arrangements is also impacted by the correlation between gas and power prices. As the correlation increases, the fair value of power option contracts and tolling arrangements tends to decline.

Forward Power Contracts

Generally, an increase (decrease) in long-term forward power prices at illiquid locations where SCE is the buyer relative to the contract price will increase (decrease) fair value.

Congestion Revenue Rights

Where SCE is the buyer, generally increases (decreases) in forecasted load in isolation would result in increases (decreases) to the fair value. In general, an increase (decrease) in electricity and gas prices at illiquid locations tends to result in increases (decreases) to fair value; however, changes in electricity and gas prices in opposite directions may have varying results on fair value.

Nuclear Decommissioning Trusts

SCE's nuclear decommissioning trust investments include equity securities, U.S. treasury securities and other fixed income securities. Equity and treasury securities are classified as Level 1 as fair value is determined by observable market prices in active or highly liquid and transparent markets. The remaining fixed income securities are classified as Level 2. The fair value of these financial instruments is based on evaluated prices that reflect significant observable market information such as reported trades, actual trade information of similar securities, benchmark yields, broker/dealer quotes, issuer spreads, bids, offers and relevant credit information.

Fair Value of Long-Term Debt Recorded at Carrying Value

The carrying value and fair value of Edison International and SCE's long-term debt is as follows:

	March 31, 2013				December 31, 2012
(in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
SCE	$	9,227	$	10,694	$	8,828	$	10,505
Edison International	9,629		11,127		9,231		10,944

Fair value of Edison International and SCE's short-term and long-term debt is classified as Level 2 and is based on evaluated prices that reflect significant observable market information such as reported trades, actual trade information of similar securities, benchmark yields, broker/dealer quotes of new issue prices and relevant credit information.

The carrying value of Edison International and SCE's trade receivables and payables, other investments, and short-term debt approximates fair value.

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Note 5.    Debt and Credit Agreements

Long-Term Debt

In March 2013, SCE issued $400 million of 3.90% first and refunding mortgage bonds due in 2043. The proceeds from these bonds were used to repay commercial paper borrowings and to fund SCE's capital program.

Credit Agreements and Short-Term Debt

At March 31, 2013, SCE's outstanding commercial paper was $404 million at a weighted-average interest rate of 0.32%. This commercial paper was supported by a $2.75 billion five-year revolving credit facility. At March 31, 2013, letters of credit issued under SCE's credit facility aggregated $121 million and are scheduled to expire in twelve months or less. At December 31, 2012, the outstanding commercial paper was $175 million at a weighted-average interest rate of 0.37%.

At March 31, 2013, Edison International Parent's outstanding short-term debt was $16 million at a weighted-average interest rate of 1.485%. This short-term debt was supported by a $1.25 billion credit facility. At December 31, 2012, Edison International had no outstanding short-term debt.

Note 6.    Derivative Instruments

Derivative financial instruments are used to manage exposure to commodity price risk. SCE manages commodity price risk in part by entering into forward commodity transactions, including options, swaps and forwards, tolling arrangements and CRRs. To mitigate credit and default risk SCE enters into master netting agreements or similar agreements whenever possible. These transactions are approved by the CPUC or executed in compliance with CPUC-approved procurement plans. SCE recovers its related hedging costs and nonperformance losses through the energy resource recovery account ("ERRA"), and as a result, exposure to commodity price and credit and default risks are not expected to impact earnings, but may impact cash flows.

Commodity Price Risk

Commodity price risk represents the potential impact that can be caused by a change in the market value of a particular commodity. SCE's electricity price exposure arises from energy purchased from and sold to wholesale markets as a result of differences between SCE's load requirements and the amount of energy delivered from its generating facilities and power purchase agreements. SCE's natural gas price exposure arises from natural gas purchased for the Mountainview power plant and peaker plants, QF contracts where pricing is based on a monthly natural gas index and power purchase agreements in which SCE has agreed to provide the natural gas needed for generation, referred to as tolling arrangements.

Credit and Default Risk

Credit and default risk represents the potential impact that can be caused if a counterparty were to default on its contractual obligations and SCE would be exposed to spot markets for buying replacement power or selling excess power. In addition, SCE would be exposed to the risk of non-payment of accounts receivable, primarily related to the sales of excess power and realized gains on derivative instruments.

Certain power contracts contain master netting agreements or similar agreements, which generally allows counterparties subject to the agreement to set-off amounts when certain criteria are met, such as in the event of default. The objective of netting is to reduce credit exposure. Additionally, to reduce SCE's risk exposures counterparties may be required to pledge collateral depending on the creditworthiness of each counterparty and the risk associated with the transaction.

Certain power contracts contain a provision that requires SCE to maintain an investment grade credit rating from each of the major credit rating agencies, referred to as a credit-risk-related contingent feature. If SCE's credit rating were to fall below investment grade, SCE may be required to pay the derivative liability or post additional collateral. The net fair value of all derivative liabilities with these credit-risk-related contingent features was $1 million and $6 million as of March 31, 2013 and December 31, 2012, respectively, for which SCE has posted no collateral to its counterparties for the respective periods. If the credit-risk-related contingent features underlying these agreements were triggered on March 31, 2013, SCE would be required to post collateral in the amount of the net derivative liability and settle any outstanding payables.

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Fair Value of Derivative Instruments

SCE presents its derivative assets and liabilities on a net basis on its consolidated balance sheets when subject to master netting agreements or similar agreements. Derivative positions are offset against margin and cash collateral deposits. In addition, SCE has provided collateral in the form of letters of credit. Collateral requirements can vary depending upon the level of unsecured credit extended by counterparties, changes in market prices relative to contractual commitments and other factors. The following table summarizes the gross and net fair values of SCE's commodity derivative instruments:

	March 31, 2013
	Derivative Assets									Derivative Liabilities
(in millions)	Short-Term			Long-Term			Subtotal			Short-Term			Long-Term			Subtotal			Net Liability
Commodity derivative contracts
Gross amounts recognized	$	133		$	85		$	218		$	149		$	1,025		$	1,174		$	956
Gross amounts offset in the consolidated balance sheets	(22		)	(4		)	(26		)	(22		)	(4		)	(26		)	—
Cash collateral posted1	—			—			—			(20		)	(7		)	(27		)	(27		)
Net amounts presented in the consolidated balance sheets	$	111		$	81		$	192		$	107		$	1,014		$	1,121		$	929

	December 31, 2012
	Derivative Assets									Derivative Liabilities
(in millions)	Short-Term			Long-Term			Subtotal			Short-Term			Long-Term			Subtotal			Net Liability
Commodity derivative contracts
Gross amounts recognized	$	151		$	91		$	242		$	186		$	954		$	1,140		$	898
Gross amounts offset in the consolidated balance sheets	(22		)	(6		)	(28		)	(22		)	(6		)	(28		)	—
Cash collateral posted1	—			—			—			(38		)	(9		)	(47		)	(47		)
Net amounts presented in the consolidated balance sheets	$	129		$	85		$	214		$	126		$	939		$	1,065		$	851

¹  In addition, SCE has posted $10 million and $8 million of collateral that is not offset against the derivative liabilities and is reflected in "Other current assets" on the March 31, 2013 and December 31, 2012 consolidated balance sheets, respectively.

Income Statement Impact of Derivative Instruments

SCE recognizes realized gains and losses on derivative instruments as purchased power expense and expects that such gains or losses will be part of the purchase power costs recovered from customers. As a result, realized gains and losses do not affect earnings, but may temporarily affect cash flows. Due to expected future recovery from customers, unrealized gains and losses are recorded as regulatory assets and liabilities and therefore also do not affect earnings. The results of derivative activities and related regulatory offsets are recorded in cash flows from operating activities in the consolidated statements of cash flows.

The following table summarizes the components of SCE's economic hedging activity:

	Three months ended March 31,
(in millions)	2013			2012
Realized losses	$	(16	)	$	(55	)
Unrealized losses	(54		)	(361		)

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Notional Volumes of Derivative Instruments

The following table summarizes the notional volumes of derivatives used for SCE hedging activities:

		Economic Hedges
Commodity	Unit of Measure	March 31, 2013	December 31, 2012
Electricity options, swaps and forwards	GWh	13,067	15,884
Natural gas options, swaps and forwards	Bcf	65	100
Congestion revenue rights	GWh	138,697	149,774
Tolling arrangements	GWh	100,810	101,485

Note 7.    Income Taxes

Effective Tax Rate

The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision:

	Edison International						SCE
	Three months ended March 31,
(in millions)	2013			2012			2013			2012
Income from continuing operations before income taxes	$	384		$	287		$	395		$	300
Provision for income tax at federal statutory rate of 35%	134			101			138			105
Increase (decrease) in income tax from:
Items presented with related state income tax, net:
State tax, net of federal benefit	3			6			14			10
Property-related	(41		)	(10		)	(42		)	(10		)
Uncertain tax positions	7			1			7			—
Other	(5		)	(7		)	(5		)	(6		)
Total income tax expense from continuing operations	$	98		$	91		$	112		$	99
Effective tax rate	25.5		%	31.7		%	28.4		%	33.0		%

The CPUC requires flow-through ratemaking treatment for the current tax benefit arising from certain property-related and other temporary differences which reverse over time. The accounting treatment for these temporary differences results in recording regulatory assets and liabilities for amounts that would otherwise be recorded to deferred income tax expense.

Property-related items include recognition of income tax benefits from repair deductions for income tax purposes.

Tax Disputes

Edison International's federal income tax returns and its California combined franchise tax returns are currently open for years subsequent to 2002. In addition, specific California refund claims made by Edison International for years 1991 through 2002 are currently under review by the Franchise Tax Board.

Tax Years 2003 – 2006

The IRS examination phase of tax years 2003 through 2006 was completed in the fourth quarter of 2010, which included proposed adjustments for the following two items:

• A proposed adjustment increasing the taxable gain on the 2004 sale of EME's international assets, which if sustained, would result in a federal tax payment of approximately $201 million, including interest and penalties through March 31, 2013 (the IRS has asserted a 40% penalty for understatement of tax liability related to this matter), see Note 16.

• A proposed adjustment to disallow a component of SCE's repair allowance deduction, which if sustained, would result in a federal tax payment of approximately $97 million, including interest through March 31, 2013.

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Edison International disagrees with the proposed adjustments and filed a protest with the IRS in the first quarter of 2011. The appeals process to date has not resulted in a change in the proposed adjustment by the IRS on the taxable gain on the 2004 sale of EME's international assets. If a deficiency notice is issued on this item, it would require payment of the tax, interest and any penalties within 90 days of its issuance or a filing of a petition in United States Tax Court.

Tax Years 2007 – 2009

The IRS examination phase of tax years 2007 through 2009 was completed during the first quarter of 2013. Edison International received a Revenue Agent Report from the IRS on February 28, 2013 which included a proposed adjustment to disallow a component of SCE's repair allowance deduction (similar to the 2003 – 2006 tax years). The proposed adjustment to disallow a component of SCE's repair allowance deduction, which if sustained, would result in a federal tax payment of approximately $73 million, including interest through March 31, 2013. Edison International disagrees with the proposed adjustments and filed a protest with the IRS in April 2013.

Note 8.    Compensation and Benefit Plans

Pension Plans

Edison International and SCE made contributions of $54 million and $45 million, respectively, during the three months ended March 31, 2013 and expect to make $153 million and $137 million, respectively, during the remainder of 2013. Annual contributions made to most of SCE's pension plans are anticipated to be recovered through CPUC-approved regulatory mechanisms. Annual contributions to these plans are expected to be, at a minimum, equal to the related annual expense.

Expense components are:

	Edison International						SCE
	Three months ended March 31,
(in millions)	2013			2012			2013			2012
Service cost	$	38		$	38		$	37		$	37
Interest cost	42			46			41			45
Expected return on plan assets	(57		)	(56		)	(57		)	(55		)
Amortization of prior service cost	1			1			1			1
Amortization of net loss1	15			17			14			15
Expense under accounting standards	$	39		$	46		$	36		$	43
Regulatory adjustment (deferred)	17			25			17			25
Total expense recognized	$	56		$	71		$	53		$	68

¹  Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $3 million and $2 million, respectively, for the three months ended March 31, 2013.

Postretirement Benefits Other Than Pensions

Edison International and SCE both made contributions of $5 million during the three months ended March 31, 2013 and expect to make $25 million during the remainder of 2013. Annual contributions made to SCE plans are anticipated to be recovered through CPUC-approved regulatory mechanisms and are expected to be, at a minimum, equal to the total annual expense for these plans. Benefits under these plans, with some exceptions, are generally unvested and subject to change.

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Expense components are:

	Edison International						SCE
	Three months ended March 31,
(in millions)	2013			2012			2013			2012
Service cost	$	14		$	12		$	13		$	12
Interest cost	26			28			26			28
Expected return on plan assets	(30		)	(27		)	(30		)	(27		)
Amortization of prior service credit	(9		)	(9		)	(9		)	(9		)
Amortization of net loss1	7			12			7			11
Total expense	$	8		$	16		$	7		$	15

¹  Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was less than $1 million and zero, respectively, for the three months ended March 31, 2013.

Workforce Reduction

In 2012, SCE commenced multiple efforts to reduce its workforce in order to reflect SCE's strategic direction to optimize its cost structure, moderate customer rate increases and align its cost structure with its peers. The following table provides a summary of changes in the accrued severance liability associated with these reductions:

(in millions)
Balance at January 1, 2013	$	104
Additions	16
Payments	(61		)
Balance at March 31, 2013	$	59

The liability presented in the table above is reflected in "Other current liabilities" on the consolidated balance sheets. The severance costs are included in "Operation and maintenance" on the consolidated income statements.

Note 9.    Commitments and Contingencies

Indemnities

Edison International and SCE have various financial and performance guarantees and indemnity agreements which are issued in the normal course of business. The contracts discussed below included performance guarantees.

Indemnity Provided as Part of the Acquisition of Mountainview

In connection with the acquisition of the Mountainview power plant, SCE agreed to indemnify the seller with respect to specific environmental claims related to SCE's previously owned San Bernardino Generating Station, divested by SCE in 1998 and reacquired in 2004 as part of the Mountainview acquisition. SCE retained certain responsibilities with respect to environmental claims as part of the original divestiture of the station. The aggregate liability for either party to the purchase agreement for damages and other amounts is a maximum of $60 million. This indemnification for environmental liabilities expires on or before March 12, 2033. SCE has not recorded a liability related to this indemnity.

Mountainview Filter Cake Indemnity

SCE has indemnified the City of Redlands, California in connection with Mountainview's California Energy Commission permit for cleanup or associated actions related to groundwater contaminated by perchlorate due to the disposal of filter cake at the City's solid waste landfill. The obligations under this agreement are not limited to a specific time period or subject to a maximum liability. SCE has not recorded a liability related to this indemnity.

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Other Indemnities

Edison International and SCE provide other indemnifications through contracts entered into in the normal course of business. These are primarily indemnifications against adverse litigation outcomes in connection with underwriting agreements, and indemnities for specified environmental liabilities and income taxes with respect to assets sold. Edison International's and SCE's obligations under these agreements may or may not be limited in terms of time and/or amount, and in some instances Edison International and SCE may have recourse against third parties. Edison International and SCE have not recorded a liability related to these indemnities. The overall maximum amount of the obligations under these indemnifications cannot be reasonably estimated.

Contingencies

In addition to the matters disclosed in these Notes, Edison International and SCE are involved in other legal, tax and regulatory proceedings before various courts and governmental agencies regarding matters arising in the ordinary course of business. Edison International and SCE believe the outcome of these other proceedings will not, individually or in the aggregate, materially affect its results of operations or liquidity.

San Onofre Outage, Inspection and Repair Issues

Replacement steam generators were installed at San Onofre in 2010 and 2011. In the first quarter of 2012, a water leak suddenly occurred in one of the heat transfer tubes in San Onofre's Unit 3 steam generators and the Unit was safely taken off-line. At the time, Unit 2 was off-line for a planned outage when areas of unexpected tube to support structure wear were found. Each Unit will be restarted only when and if SCE determines that it is safe to do so and when start-up has been approved by the NRC pursuant to the terms of a Confirmatory Action Letter (“CAL”) issued by the NRC in March 2012. Both Units have remained off-line for extensive inspections, testing and analysis of their steam generators. In October 2012, SCE submitted to the NRC a response to the CAL and restart plans for Unit 2. SCE proposed to restart Unit 2 under the CAL and operate at a reduced power level (70%) for approximately five months, followed by a mid-cycle scheduled outage and inspection.

The NRC has been engaged in conducting a series of inspections, data requests, evaluations, reviews and public meetings about the causes of the steam generator malfunction and damage and to verify that SCE has performed the actions described in the CAL response and as otherwise required by its obligations as a nuclear operator. As part of the NRC's review of the San Onofre outage and proceedings pursuant to the CAL the NRC appointed an Augmented Inspection Team to review SCE's performance. SCE has been advised that the NRC's Office of Investigations has initiated an investigation into the accuracy and completeness of information SCE has provided to the NRC since the outage regarding the San Onofre steam generators. Should the NRC find a deficiency in SCE's performance or provision of information, SCE could be subject to additional NRC actions, including the imposition of penalties, and the findings could be taken into consideration in the CPUC regulatory proceedings described below.

Under California Public Utilities Code Section 455.5, SCE is required to notify the CPUC if either of the San Onofre Units has been out of service for nine consecutive months (not including preplanned outages). SCE provided such notice to the CPUC on November 1, 2012 for Unit 3 and December 6, 2012 for Unit 2. In October 2012 the CPUC issued an Order Instituting Investigation (“OII”) that consolidated all San Onofre issues in related regulatory proceedings and considers appropriate cost recovery for all San Onofre costs, including among other costs, the cost of the steam generator replacement project, substitute market power costs, capital expenditures, operations and maintenance costs, and seismic study costs. The Order requires that all San Onofre-related costs incurred on and after January 1, 2012 be tracked in a memorandum account and, to the extent included in rates, collected subject to refund. The first two phases of the OII are focused on these 2012 costs. SCE filed an application in January 2013 seeking a reasonableness determination regarding these costs. The Order also states that the CPUC will determine whether to order the immediate removal, effective as of the date of the order, of all costs related to San Onofre from SCE's rates, with placement of those costs in a deferred debit account pending the return of one or both Units to useful service, or other possible action. Various other parties have filed testimony in the OII asking for the disallowance of some or all of the San Onofre-related costs. The third and fourth phases of the OII will focus on the steam generator replacement project and San Onofre 2013 revenue requirement, respectively. On March 15, 2013, SCE filed its final costs for the San Onofre Steam Generator project, which were within the amount authorized by the CPUC based on SCE's estimate of the costs after adjustment for inflation using the Handy Whitman Index. It is currently expected that the investigation will be conducted in phases that will extend at least into 2014. As of the date of this report, the CPUC has only published a schedule for the first phase of the OII.

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The steam generators were designed and supplied by MHI and are warranted for an initial period of 20 years from acceptance. MHI is contractually obligated to repair or replace defective items and to pay specified damages for certain repairs. MHI's liability under the purchase agreement is limited to $138 million and excludes consequential damages, defined to include "the cost of replacement power." Such limitations in the contract are subject to applicable exceptions both in the contract and under law. SCE has notified MHI that it believes one or more of such exceptions now apply and that MHI's liability is not limited to $138 million, and MHI has advised SCE that it disagrees. The disagreement may ultimately become subject to dispute resolution procedures set forth in the purchase agreement, including international arbitration. SCE, on behalf of itself and the other San Onofre co-owners, has submitted five invoices to MHI totaling $139 million for steam generator repair costs incurred through February 28, 2013. MHI paid the first invoice of $45 million, while reserving its right to challenge any of the charges in the invoice. In January 2013, MHI advised SCE that it rejected a portion of the first invoice and required further documentation regarding the remainder of the invoice. SCE has recorded its share of the invoice paid as a reduction of repair and inspection costs.

San Onofre carries both property damage and outage insurance issued by Nuclear Electric Insurance Limited (“NEIL”) and has placed NEIL on notice of claims under the two policies. The NEIL policies have a number of exclusions and limitations that may reduce or eliminate coverage. As of the date of this report, SCE has filed separate proofs of loss for Unit 2 and Unit 3 under the outage policy covering the period of the outage through December 29, 2012 that total $234 million (SCE's share of which is approximately $183 million). Pursuant to these proofs of loss SCE is seeking the weekly indemnity amounts provided under the outage policy for each Unit. Because the outage is ongoing, SCE has supplemented and will continue to supplement these proofs of loss in the future. SCE has not submitted a proof of loss under the property damage policy. No amounts have been recognized in SCE's financial statements, pending NEIL's response. To the extent any costs are recovered under the outage policy, SCE expects to refund those amounts to customers through the ERRA balancing account.

The costs tracked in the memorandum account through March 31, 2013 under the CPUC's OII include approximately $728 million of SCE's authorized revenue requirement associated with operating and maintenance expenses, and depreciation and return on SCE's investment in Unit 2, Unit 3 and common plant. This amount is subject to refund depending on the outcome of the investigation.

In 2005, the CPUC authorized expenditures of approximately $525 million ($665 million based on SCE's estimate after adjustment for inflation using the Handy-Whitman Index) for SCE's 78.21% share of the costs to purchase and install the four new steam generators in Units 2 and 3 and remove and dispose of their predecessors. SCE has spent $602 million through March 31, 2013 on the steam generator replacement project. These expenditures remain subject to CPUC reasonableness review and approval.

As a result of outages associated with the steam generator inspection and repair, electric power and capacity normally provided by San Onofre are being purchased in the market by SCE . These market power costs are typically recoverable through the ERRA balancing account subject to CPUC reasonableness review, but will now be reviewed as part of the CPUC’s OII proceeding. The cost estimate required in the OII proceeding produce a market power cost estimate that differs from SCE’s prior estimates, as the OII methodology includes cost estimates during planned outage periods (such as for refueling) and estimated foregone energy sales from excess San Onofre production. Estimated market power costs calculated in accordance with the OII methodology were approximately $444 million as of March 31, 2013, net of avoided nuclear fuel costs. Such amount includes costs of approximately $50 million associated with planned outage periods. SCE believes that such costs should be excluded as they would have been incurred even had the replacement steam generators performed as expected. The CPUC will ultimately determine a final methodology for estimating market power costs as it continues its review of the issues in the OII. Future market power costs are uncertain and will be influenced by factors such as when, if, and at what output levels either of the San Onofre Units is returned to service, as well as variations in the cost of power in the market; however, such amounts may be material.

Through March 31, 2013, SCE's share of incremental inspection and repair costs totaled $109 million for both Units (not including payments made by MHI as described below), and repairs to restart Unit 2 at the reduced power levels described above were completed. The costs for Unit 2 may increase following NRC review under the CAL. Total incremental repair costs associated with returning Unit 3 to service, and returning both Units to service at originally specified capabilities safely, remain uncertain. SCE recorded its share of payments made to date by MHI ($36 million) as a reduction of incremental inspection and repair costs in 2012.

SCE believes that the actions taken and costs incurred in connection with the San Onofre replacement steam generators and outages have been prudent. Accordingly, SCE considers its operating, capital, and market power costs, recoverable through base rates and the ERRA balancing account, as offset by third party recoveries where applicable. SCE cannot provide assurance that either or both Units of San Onofre will be returned to service, that the CPUC will not disallow costs incurred or order refunds to customers of amounts collected in rates, or that SCE will be successful in recovering amounts from third

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parties. A delay in the restart of San Onofre Unit 2 beyond summer 2013 may impact plans for future operations of both Units. Disallowances of costs and/or refund of amounts received from customers could be material and adversely affect SCE's financial condition, results of operations and cash flows. SCE will pursue recoveries arising from available agreements, but there is no assurance that SCE will recover all of its applicable costs pursuant to these arrangements.

EME Chapter 11 Filing

On the Petition Date, EME and certain of its wholly-owned subsidiaries filed voluntary petitions for relief under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. Under the Support Agreement to which EME, Edison International and certain of EME's senior unsecured noteholders are parties, each of them has agreed to support Bankruptcy Court approval of the Settlement Transaction. EME has a customary "fiduciary out" under the Support Agreement. Moreover, the Bankruptcy Court may not approve the Settlement Transaction, or even if the Settlement Transaction is approved, it may not be consummated if certain conditions are not met. If the Settlement Transaction is not approved and consummated, Edison International may not be entitled to the benefits of the Settlement Transaction and it will remain subject to any claims of EME and the noteholders, including claims relating to or arising out of any shared services, the tax allocation agreement, and any other relationships or transactions between the companies. For further information, see Note 16.

CPUC Safety and Enforcement Division Investigations

San Gabriel Valley Windstorm Investigation

In November 2011, a windstorm resulted in significant damage to SCE’s electric system and service outages for SCE customers primarily in the San Gabriel Valley. The CPUC directed its Safety and Enforcement Division (“SED”) to conduct an investigation focused on the cause of the outages, SCE’s service restoration effort, and SCE’s customer communications during the outages. The SED issued its final report on January 11, 2013. The report asserts that SCE and others with whom SCE shares utility poles violated certain CPUC safety rules applicable to overhead line construction, maintenance and operation, which may have caused the failures of affected poles and supporting cables. The report also concludes that SCE’s restoration time was not adequate and makes other assertions. Additionally, the report contends that SCE violated CPUC rules by failing to preserve evidence relevant to the investigation when it did not retain damaged poles that were replaced following the windstorm. If the CPUC issues an OII regarding this matter and SCE is found to have violated any CPUC rules, it could face penalties. SCE is unable to estimate a possible loss or range of loss associated with any penalties that may be imposed by the CPUC on SCE.

The final decision in SCE’s 2012 GRC directed SCE to, among other things, make an assessment of a representative sampling of its poles to determine their conformance with current legal standards and report by July 31, 2013 on the results of this assessment. The cost of any large scale review of poles or other equipment for safety compliance, as well as any remediation measures required to assure compliance, could be significant.

Malibu Fire Order Instituting Investigation

Following a 2007 wildfire in Malibu, California, the CPUC issued an OII to determine if any statutes, CPUC general orders, rules or regulations were violated by SCE or telecomm providers (“OII Respondents”) that shared the use of three failed power poles in the wildfire area. The SED has alleged, among other things, that the poles were overloaded, that the OII Respondents violated the CPUC's rules governing the design, construction and inspection of poles, and that SCE failed to preserve evidence relevant to the investigation and misled the CPUC during its investigation of the fire. In October 2011, the SED proposed that the OII Respondents be assessed penalties of approximately $99 million, with SCE being allocated approximately $50 million of the total. SCE has denied the allegations and believes the proposed penalties are excessive. In September 2012, the CPUC approved a partial settlement between the SED and three telecomm providers. The partial settlement did not resolve any of the claims against SCE or the remaining telecomm provider. In February 2013, SCE was informed that the remaining telecomm provider had reached an agreement to settle with the SED, which remains subject to final documentation and CPUC approval.

Four Corners New Source Review Litigation

In October 2011, four private environmental organizations filed a CAA citizen lawsuit against the co-owners of Four Corners. The complaint alleges that certain work performed at the Four Corners generating units 4 and 5, over the approximate periods of 1985 – 1986 and 2007 – 2010, constituted plant “major modifications” and the plant's failure to obtain permits and install best available control technology ("BACT") violated the PSD requirements and the New Source Performance Standards of the CAA. The complaint also alleges subsequent and continuing violations of BACT air emissions limits. The lawsuit seeks injunctive and declaratory relief, civil penalties, including a mitigation project and litigation costs. In November 2012, the parties requested a stay of the litigation to allow for settlement discussion, and the matter is currently stayed to April 2013. In

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November 2010, SCE entered into an agreement to sell its ownership interest in generating units 4 and 5 to APS. The sale remains contingent upon APS obtaining a long-term fuel supply agreement for the plant. As of January 2013, the sale agreement became terminable by either party, but as of the date of this report, the agreement has not been terminated. Under the agreement SCE would remain responsible for its pro rata share of certain environmental liabilities, including penalties arising from environmental violations prior to the sale. SCE is unable to estimate a possible loss or range of loss associated with this matter.

Environmental Remediation

Edison International records its environmental remediation liabilities when site assessments and/or remedial actions are probable and a range of reasonably likely cleanup costs can be estimated. Edison International reviews its sites and measures the liability quarterly, by assessing a range of reasonably likely costs for each identified site using currently available information, including existing technology, presently enacted laws and regulations, experience gained at similar sites, and the probable level of involvement and financial condition of other potentially responsible parties. These estimates include costs for site investigations, remediation, operation and maintenance, monitoring and site closure. Unless there is a single probable amount, Edison International records the lower end of this reasonably likely range of costs (reflected in "Other long-term liabilities") at undiscounted amounts as timing of cash flows is uncertain.

At March 31, 2013, Edison International's recorded estimated minimum liability to remediate its 23 identified material sites (sites in which the upper end of the range of the costs is at least $1 million) at SCE was $124 million, including $91 million related to San Onofre. In addition to its identified material sites, SCE also has 35 immaterial sites for which the total minimum recorded liability was $3 million. Of the $127 million total environmental remediation liability for SCE, $123 million has been recorded as a regulatory asset. SCE expects to recover $31 million through an incentive mechanism that allows SCE to recover 90% of its environmental remediation costs at certain sites (SCE may request to include additional sites) and $92 million through a mechanism that allows SCE to recover 100% of the costs incurred at certain sites through customer rates. Edison International's identified sites include several sites for which there is a lack of currently available information, including the nature and magnitude of contamination, and the extent, if any, that Edison International may be held responsible for contributing to any costs incurred for remediating these sites. Thus, no reasonable estimate of cleanup costs can be made for these sites.

The ultimate costs to clean up Edison International's identified sites may vary from its recorded liability due to numerous uncertainties inherent in the estimation process, such as: the extent and nature of contamination; the scarcity of reliable data for identified sites; the varying costs of alternative cleanup methods; developments resulting from investigatory studies; the possibility of identifying additional sites; and the time periods over which site remediation is expected to occur. Edison International believes that, due to these uncertainties, it is reasonably possible that cleanup costs at the identified material sites and immaterial sites could exceed its recorded liability by up to $180 million and $6 million, respectively, all of which is related to SCE. The upper limit of this range of costs was estimated using assumptions least favorable to Edison International among a range of reasonably possible outcomes.

SCE expects to clean up and mitigate its identified sites over a period of up to 30 years. Remediation costs for 2013 and in each of the next four years are expected to range from $6 million to $28 million. Costs incurred for both the three months ended March 31, 2013 and 2012 was $2 million.

Based upon the CPUC's regulatory treatment of environmental remediation costs incurred at SCE, Edison International believes that costs ultimately recorded will not materially affect its results of operations, financial position or cash flows. There can be no assurance, however, that future developments, including additional information about existing sites or the identification of new sites, will not require material revisions to estimates.

Nuclear Insurance

Federal law limits public liability claims from a nuclear incident to the amount of available financial protection, which is currently approximately $12.6 billion. SCE and other owners of San Onofre and Palo Verde have purchased the maximum private primary insurance available ($375 million). The balance is covered by a loss sharing program among nuclear reactor licensees. If a nuclear incident at any licensed reactor in the United States results in claims and/or costs which exceed the primary insurance at that plant site, all nuclear reactor licensees could be required to contribute their share of the liability in the form of a deferred premium.

Based on its ownership interests, SCE could be required to pay a maximum of approximately $235 million per nuclear incident. However, it would have to pay no more than approximately $35 million per incident in any one year. If the public liability limit above is insufficient, federal law contemplates that additional funds may be appropriated by Congress. This could include an additional assessment on all licensed reactor operators as a measure for raising further federal revenue.

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NEIL, a mutual insurance company owned by entities with nuclear facilities, issues primary property damage, decontamination and excess property damage and accidental outage insurance policies. At San Onofre and Palo Verde, property damage insurance covers losses up to $500 million, including decontamination costs. Decontamination liability and excess property damage coverage exceeding the primary $500 million also has been purchased in amounts greater than the federal requirement of a minimum of approximately $1.1 billion. Property damage insurance also covers damages caused by acts of terrorism up to specified limits. Additional outage insurance covers part of replacement power expenses during an accident-related nuclear unit outage.

If losses at any nuclear facility covered by the arrangement were to exceed the accumulated funds for these insurance programs, SCE could be assessed retrospective premium adjustments of up to approximately $52 million per year. Insurance premiums are charged to operating expense.

Wildfire Insurance

Severe wildfires in California have given rise to large damage claims against California utilities for fire-related losses alleged to be the result of the failure of electric and other utility equipment. Invoking a California Court of Appeal decision, plaintiffs pursuing these claims have relied on the doctrine of inverse condemnation, which can impose strict liability (including liability for a claimant's attorneys' fees) for property damage. On September 15, 2012, SCE's parent, Edison International, renewed its insurance coverage, which included coverage for SCE's wildfire liabilities up to a $550 million limit (with a self-insured retention of $10 million per wildfire occurrence). Various coverage limitations within the policies that make up the insurance coverage could result in additional self-insured costs in the event of multiple wildfire occurrences during the policy period (September 15, 2012 to August 31, 2013). SCE may experience coverage reductions and/or increased insurance costs in future years. No assurance can be given that future losses will not exceed the limits of SCE's insurance coverage.

Spent Nuclear Fuel

Under federal law, the Department of Energy ("DOE") is responsible for the selection and construction of a facility for the permanent disposal of spent nuclear fuel and high-level radioactive waste. The DOE did not meet its contractual obligation to begin acceptance of spent nuclear fuel by January 31, 1998. Extended delays by the DOE have led to the construction of costly alternatives and associated siting and environmental issues. Currently, both San Onofre and Palo Verde have interim storage for spent nuclear fuel on site sufficient for the current license period.

In June 2010, the United States Court of Federal Claims issued a decision granting SCE and the San Onofre co-owners damages of approximately $142 million to recover costs incurred through December 31, 2005 for the DOE's failure to meet its obligation to begin accepting spent nuclear fuel from San Onofre. SCE received payment from the federal government in the amount of the damage award in November 2011. SCE has returned to the San Onofre co-owners their respective share of the damage award paid. SCE, as operating agent, filed a lawsuit on behalf of the San Onofre owners against the DOE in the Court of Federal Claims in December 2011 seeking damages of approximately $98 million for the period from January 1, 2006 to December 31, 2010 for the DOE's failure to meet its obligation to begin accepting spent nuclear fuel. Additional legal action would be necessary to recover damages incurred after December 31, 2010. Any damages recovered by SCE are subject to CPUC review as to how these amounts would be distributed among customers, shareholders, or to offset fuel decommissioning or storage costs.

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Note 10.    Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of tax, consists of:

	Edison International			SCE
(in millions)	Pension and PBOP – Net Loss
Balance at January 1, 2013	$	(87	)	$	(29	)
Other comprehensive loss before reclassifications	(2		)	(4		)
Amounts reclassified from accumulated other comprehensive loss1	2			1
Net current-period other comprehensive loss	—			(3		)
Balance at March 31, 2013	$	(87	)	$	(32	)
Reclassifications from accumulated other comprehensive loss:
Amortization of net loss included in net income	$	3		$	2
Tax expense	1			1
Total reclassification, net of tax	$	2		$	1

¹  These items are included in the computation of net periodic pension and PBOP expense. See Note 8 for additional information.

Note 11.    Supplemental Cash Flows Information

Supplemental cash flows information is:

	Edison International					SCE
	Three months ended March 31,
(in millions)	2013		2012			2013			2012
Cash payments (receipts) for interest and taxes:
Interest, net of amounts capitalized	$	167	$	151		$	159		$	151
Tax payments (refunds), net	6		(4		)	(3		)	(1		)
Non-cash financing and investing activities:
Dividends declared but not paid:
Common stock	$	110	$	106		$	—		$	—
Preferred and preference stock	7		10			7			10

SCE's accrued capital expenditures at March 31, 2013 and 2012 were $507 million and $412 million, respectively. Accrued capital expenditures will be included as an investing activity in the consolidated statements of cash flow in the period paid.

Note 12.    Preferred and Preference Stock of Utility

In January 2013, SCE issued 160,004 shares of 5.10% Series G preference stock (cumulative, $2,500 liquidation value) to SCE Trust II, a special purpose entity formed to issue trust securities as discussed in Note 3. The Series G preference stock may be redeemed at par, in whole, but not in part, at any time prior to March 15, 2018 if certain changes in tax or investment company laws occur. After March 15, 2018, SCE may redeem the Series G shares at par, in whole or in part. The shares are not subject to mandatory redemption. The proceeds from the sale of these shares were used to redeem all outstanding shares of Series B and C preference stock.

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Note 13.    Regulatory Assets and Liabilities

Regulatory Assets

Regulatory assets included on the consolidated balance sheets are:

(in millions)	March 31, 2013		December 31, 2012
Current:
Regulatory balancing accounts	$	624	$	502
Energy derivatives	48		70
Total Current	672		572
Long-term:
Deferred income taxes, net	2,718		2,663
Pensions and other postretirement benefits	1,539		1,550
Energy derivatives	974		900
Unamortized investments, net	487		507
Unamortized loss on reacquired debt	222		228
Nuclear-related investment, net	138		141
Regulatory balancing accounts	76		73
Other	364		360
Total Long-term	6,518		6,422
Total Regulatory Assets	$	7,190	$	6,994

Regulatory Liabilities

Regulatory liabilities included on the consolidated balance sheets are:

(in millions)	March 31, 2013		December 31, 2012
Current:
Regulatory balancing accounts	$	383	$	484
Other	60		52
Total Current	443		536
Long-term:
Costs of removal	2,769		2,731
Asset Retirement Obligations	1,538		1,385
Regulatory balancing accounts	1,156		1,091
Other	7		7
Total Long-term	5,470		5,214
Total Regulatory Liabilities	$	5,913	$	5,750

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Note 14.    Other Investments

Nuclear Decommissioning Trusts

Future decommissioning costs of removal of SCE's nuclear assets are expected to be funded from independent decommissioning trusts, which currently receive contributions of approximately $23 million per year through SCE customer rates. Contributions to the decommissioning trusts are reviewed every three years by the CPUC. During 2012, SCE filed with the CPUC a nuclear decommissioning cost application which includes the 2011 San Onofre and 2010 Palo Verde site-specific decommissioning studies. If the CPUC approves the studies, the annual trust contributions are expected to increase to $41 million in 2014. If additional funds are needed for decommissioning, it is probable that the additional funds will be recoverable through customer rates. Funds collected, together with accumulated earnings, will be utilized solely for decommissioning. The CPUC has set certain restrictions related to the investments of these trusts.

The following table sets forth amortized cost and fair value of the trust investments:

	Longest Maturity Dates	Amortized Cost				Fair Value
(in millions)		March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Stocks	—	$	990	$	978	$	2,468	$	2,271
Municipal bonds	2051	509		518		631		644
U.S. government and agency securities	2043	590		547		646		603
Corporate bonds	2054	327		324		408		410
Short-term investments and receivables/payables	One-year	89		116		93		120
Total		$	2,505	$	2,483	$	4,246	$	4,048

Trust fund earnings (based on specific identification) increase the trust fund balance and the ARO regulatory liability. Proceeds from sales of securities (which are reinvested) were $435 million and $602 million for the three months ended March 31, 2013 and 2012, respectively. Unrealized holding gains, net of losses, were $1.7 billion and $1.6 billion at March 31, 2013 and December 31, 2012, respectively.

The following table sets forth a summary of changes in the fair value of the trust:

	Three months ended March 31,
(in millions)	2013			2012
Balance at beginning of period	$	4,048		$	3,592
Gross realized gains	5			25
Gross realized losses	(1		)	(4		)
Unrealized gains, net	176			184
Other-than-temporary impairments	(8		)	(5		)
Interest, dividends, contributions and other	26			61
Balance at end of period	$	4,246		$	3,853

Due to regulatory mechanisms, earnings and realized gains and losses (including other-than-temporary impairments) have no impact on operating revenue or earnings.

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Note 15.    Interest and Other Income and Expenses

Interest and other income and expenses are as follows:

	Three months ended March 31,
(in millions)	2013		2012
SCE's interest and other income:
Equity allowance for funds used during construction	$	21	$	20
Increase in cash surrender value of life insurance policies	7		7
Interest income	2		2
Other	2		4
Total SCE's interest and other income	32		33
Edison International Parent and Other income	2		1
Total Edison International interest and other income	$	34	$	34
SCE's other expenses:
Civic, political and related activities and donations	$	5	$	6
Other	5		3
Total SCE's other expenses	10		9
Edison International Parent and Other other expenses	1		1
Total Edison International other expenses	$	11	$	10

Note 16.    Discontinued Operations

EME Chapter 11 Filing

EME and certain of its subsidiaries, filed voluntary petitions for relief under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. On December 16, 2012, Edison International, EME and certain of EME's senior unsecured noteholders entered into a Transaction Support Agreement (the "Support Agreement"), that, subject to further documentation, Bankruptcy Court approval and certain other conditions, provides that:

• Edison International will cease to own EME when EME emerges from bankruptcy pursuant to a plan or reorganization.

• The tax allocation agreements with respect to EME will be extended through the earlier of the effective date of a plan of reorganization or December 31, 2014, and EME will remain bound to perform its obligations under such agreements.

• Edison International and EME will continue to provide ongoing shared services to each other in the ordinary course, consistent with the same terms and conditions on which those services have been provided in the past.

• Upon effectiveness of EME's plan of reorganization, Edison International will assume certain of EME's employee retirement related liabilities.

• Edison International, EME and the noteholders who have signed the Support Agreement will exchange releases of claims, and EME and Edison International will cross-indemnify one another against liabilities arising from the conduct of their separate businesses.

Under the Support Agreement, within 150 days following the Petition Date, EME will seek authority from the Bankruptcy Court to enter into the Settlement Transaction, which must be obtained within 210 days following the Petition Date or the Support Agreement is subject to termination. Counsel for EME and for certain of its creditors have requested an extension of these dates, which request is currently under discussion. Failure to meet a deadline set forth in the Support Agreement could render it subject to termination. There can be no assurance that the Bankruptcy Court will approve the Settlement Transaction, and even if it is approved, there can be no assurance that the conditions to the effectiveness of the Settlement Transaction will be satisfied. In addition, EME is entitled to terminate the Support Agreement and consider alternative transactions in accordance with its fiduciary duties.

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Deconsolidation

EME and those subsidiaries in Chapter 11 proceedings retain control of their assets and are authorized to operate their businesses as debtors-in-possession under the jurisdiction of the Bankruptcy Court. Effective December 17, 2012, Edison International no longer consolidates the earnings and losses of EME or its subsidiaries and has reflected its ownership interest in EME utilizing the cost method of accounting prospectively, under which Edison International's investment in EME is reflected as a single amount on the consolidated balance sheet of Edison International at December 31, 2012. Furthermore, Edison International has recorded a full impairment of the investment.

Edison International will not be affected by changes in EME's future financial results, other than those changes related to the tax allocation agreements. Edison International has evaluated the continuing cash flows with EME and determined that these cash flows generated are indirect and immaterial. Edison International's continuing cash flows will not include any significant revenue-producing and cost-generating activities of EME. The ongoing shared services support that Edison International and EME will continue to provide each other is not expected to be material to Edison International's cash flows.

Edison International considers EME to be an abandoned asset under generally accepted accounting principles, and, as a result, the operations of EME prior to December 17, 2012 and for all prior years, are reflected as discontinued operations in the consolidated financial statements. Included in Edison International's consolidated income statement for the three months ended March 31, 2013 was an income tax benefit of $12 million for discontinued operations. Operating revenue and loss before income taxes for discontinued operations were $441 million and $175 million for the three months ended March 31, 2012.

Contingencies

Edison International Parent has not guaranteed the obligations of EME, however, under the Internal Revenue Code and applicable state statutes, Edison International Parent is jointly liable for qualified retirement plans and Federal and specific state tax liabilities. As a result of the deconsolidation and the existence of joint liabilities, Edison International has recorded liabilities of $80 million for qualified retirement plans related to plan participants of EME and $185 million of liabilities related to joint tax liabilities. Under the qualified plan documents and tax allocation agreements, EME is obligated to pay for such liabilities and, accordingly, Edison International has recorded receivables of $231 million from EME net of amounts recorded in accumulated other comprehensive income of $34 million (related to actuarial losses under the qualified retirement plans).

If the Settlement Transaction is approved and implemented, Edison International Parent would not be entitled to receive reimbursement of the net receivable of $46 million and would be obligated to assume certain other retirement liabilities as specified in such agreement (currently estimated at $104 million). If the Settlement Transaction is not approved, then Edison International Parent would seek recovery of such joint liabilities as part of the EME bankruptcy proceeding. The outcome of the EME bankruptcy proceeding is uncertain. Management judgment was required to assess the collectability of the receivables recorded and outcome of the bankruptcy proceeding. Management concluded that, based on the Support Agreement, it is probable that a loss would be incurred and estimated a loss of $150 million based on the net receivable from the qualified retirement plans and the estimated amounts for specified additional retirement liabilities. The outcome of the EME bankruptcy could result in losses different than the amounts recorded by Edison International and such amounts could be material.

For a discussion of other contingencies related to EME, see Tax Disputes discussed in Note 7.

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ITEM 2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements reflect Edison International's and SCE's current expectations and projections about future events based on Edison International's and SCE's knowledge of present facts and circumstances and assumptions about future events and include any statement that does not directly relate to a historical or current fact. Other information distributed by Edison International and SCE that is incorporated in this report, or that refers to or incorporates this report, may also contain forward-looking statements. In this report and elsewhere, the words "expects," "believes," "anticipates," "estimates," "projects," "intends," "plans," "probable," "may," "will," "could," "would," "should," and variations of such words and similar expressions, or discussions of strategy or of plans, are intended to identify forward-looking statements. Such statements necessarily involve risks and uncertainties that could cause actual results to differ materially from those anticipated. Some of the risks, uncertainties and other important factors that could cause results to differ from those currently expected, or that otherwise could impact Edison International and SCE, include, but are not limited to:

• risk that Unit 2 and/or Unit 3 at San Onofre may not recommence operations or may require extensive repairs or replacement of the steam generators; with the cost of the related outcome not being recoverable from SCE's supplier, insurance coverage or through regulatory processes;

• ability of SCE to recover its costs in a timely manner from its customers through regulated rates;

• decisions and other actions by the CPUC, the FERC, the NRC and other regulatory authorities and delays in regulatory actions;

• the ability of Edison International or its subsidiaries to borrow funds and access the capital markets on reasonable terms;

• possible customer bypass or departure due to technological advancements or cumulative rate impacts that make self-generation or use of alternative energy sources economically viable;

• risks inherent in the construction of transmission and distribution infrastructure replacement and expansion projects, including those related to project site identification, public opposition, environmental mitigation, construction, permitting, power curtailment costs (payments due under power contracts in the event there is insufficient transmission to enable the acceptance of power delivery), and governmental approvals;

• risks associated with the operation of transmission and distribution assets and nuclear and other power generating facilities including: nuclear fuel storage issues, public safety issues, the failure, availability, efficiency, and output of equipment, the cost of repairs and retrofits of equipment, and availability and cost of spare parts;

• physical security of our critical assets and personnel and the cyber security of our critical information technology systems for grid control, and business and customer data;

• cost and availability of electricity, including the ability to procure sufficient resources to meet expected customer needs to replace power and voltage support that would have been provided by San Onofre but for the current outage or in the event of other power plant outages or significant counterparty defaults under power-purchase agreements;

• environmental laws and regulations, at both the state and federal levels, or changes in the application of those laws, that could require additional expenditures or otherwise affect the cost and manner of doing business;

• failure of the Bankruptcy Court to approve the Settlement Transaction related to the EME bankruptcy, which would impact the anticipated benefits to Edison International from the Settlement Transaction;

• changes in the fair value of investments and other assets;

• changes in interest rates and rates of inflation, including escalation rates, which may be adjusted by public utility regulators;

• governmental, statutory, regulatory or administrative changes or initiatives affecting the electricity industry, including the market structure rules applicable to each market and price mitigation strategies adopted by the California Independent System Operator, Regional Transmission Organizations, and adjoining regions;

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• availability and creditworthiness of counterparties and the resulting effects on liquidity in the power and fuel markets and/or the ability of counterparties to pay amounts owed in excess of collateral provided in support of their obligations;

• cost and availability of labor, equipment and materials;

• ability to obtain sufficient insurance, including insurance relating to SCE's nuclear facilities and wildfire-related liability, and to recover the costs of such insurance or in the absence of insurance the ability to recover uninsured losses;

• effects of legal proceedings, changes in or interpretations of tax laws, rates or policies;

• potential for penalties or disallowances caused by non-compliance with applicable laws and regulations;

• cost and availability of fuel for generating facilities and related transportation to the extent not recovered through regulated rate cost escalation provisions or balancing accounts;

• cost and availability of emission credits or allowances for emission credits;

• transmission congestion in and to each market area and the resulting differences in prices between delivery points;

• risk that competing transmission systems will be built by merchant transmission providers in SCE's service area; and

• weather conditions and natural disasters.

Additional information about risks and uncertainties, including more detail about the factors described above, is contained throughout this MD&A and in Edison International's and SCE's combined 2012 Form 10-K, including the "Risk Factors" section in Part I, Item 1A. Readers are urged to read this entire report, including the information incorporated by reference, as well as the 2012 Form 10-K, and carefully consider the risks, uncertainties and other factors that affect Edison International's and SCE's businesses. Forward-looking statements speak only as of the date they are made and neither Edison International nor SCE are obligated to publicly update or revise forward-looking statements. Readers should review future reports filed by Edison International and SCE with the SEC.

The MD&A for the three months ended March 31, 2013 discusses material changes in the consolidated financial condition, results of operations and other developments of Edison International and SCE since December 31, 2012, and as compared to the three months ended March 31, 2012. This discussion presumes that the reader has read or has access to Edison International's and SCE's MD&A for the calendar year 2012 (the "year-ended 2012 MD&A"), which was included in the 2012 Form 10-K.

Except when otherwise stated, references to each of Edison International, SCE, EMG, EME or Edison Capital mean each such company with its subsidiaries on a consolidated basis. References to "Edison International Parent and Other" mean Edison International Parent and its non-utility subsidiaries including EME.

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MANAGEMENT OVERVIEW

Highlights of Operating Results

Edison International is the parent holding company of SCE. SCE is an investor-owned public utility primarily engaged in the business of supplying electricity. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to Edison International Parent and Other refer to Edison International Parent and its nonutility subsidiaries, including EME. Unless otherwise described all of the information contained in this report relates to both filers.

	Three months ended March 31,
(in millions)	2013			2012			Change
Net Income (Loss) attributable to Edison International
SCE	$	256		$	182		$	74
Edison International Parent and Other
Continuing operations	3			(5		)	8
Discontinued operations	12			(84		)	96
Edison International	271			93			178
Less: Non-Core Items
Edison International Parent and Other	7			—			7
EME discontinued operations	12			(84		)	96
Total Non-Core Items	19			(84		)	103
Core Earnings (Losses)
SCE	256			182			74
Edison International Parent and Other	(4		)	(5		)	1
Edison International	$	252		$	177		$	75

Edison International's earnings are prepared in accordance with generally accepted accounting principles used in the United States. Management uses core earnings internally for financial planning and for analysis of performance. Core earnings (losses) are also used when communicating with investors and analysts regarding Edison International's earnings results to facilitate comparisons of the Company's performance from period to period. Core earnings (losses) are a non-GAAP financial measure and may not be comparable to those of other companies. Core earnings (losses) are defined as earnings attributable to Edison International shareholders less income or loss from discontinued operations and income or loss from significant discrete items that management does not consider representative of ongoing earnings, such as: exit activities, including sale of certain assets, and other activities that are no longer continuing; asset impairments and certain tax, regulatory or legal settlements or proceedings. On December 17, 2012 (the "Petition Date"), EME and certain of its wholly-owned subsidiaries filed voluntary petitions for relief under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. Edison International considers EME to be an abandoned asset under generally accepted accounting principles, and, as a result, the operations of EME prior to December 17, 2012 are reflected as discontinued operations.

SCE's first quarter 2013 core earnings increased primarily due to the timing of finalizing SCE's 2012 General Rate Case, lower operating expenses, largely due to timing, and tax benefits from incremental repair deductions. In addition, the 2013 increase in SCE's return on its investment resulting from rate base growth was offset by a lower CPUC-adopted 2013 return on common equity. During the first quarter of last year, pending the outcome of the 2012 CPUC GRC, SCE recognized GRC-related revenue based on the 2011 authorized revenue requirement. In the fourth quarter of 2012, SCE implemented its 2012 GRC which allowed SCE to recover its revenue requirement retroactive to January 1, 2012. The estimated revenue attributable to the first quarter of 2012 was $80 million.

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Consolidated non-core items for 2013 and 2012 for Edison International included:

• An income tax benefit of $7 million from reduction in state income taxes related to the sale of Edison Capital's interest in Unit No. 2 of the Beaver Valley Power plant. The sale of Edison Capital's lease interest was completed in 2012, however, the final determination of state income taxes paid was not completed until the first quarter of 2013 which resulted in a change in the estimate of state income taxes due.

• An income tax benefit of $12 million from a revised estimate of the tax impact of expected future deconsolidation and separation of EME from Edison International. Edison International continues to consolidate EME for federal and certain combined state tax returns. Under federal and state tax regulations, a tax deconsolidation of EME in future periods, as expected through the bankruptcy proceeding, would result in EME retaining a portion of such carryforward benefits. Amounts not used or retained by EME would be eligible to be used in future periods by Edison International. As a result, changes in the amount of tax attributes during the first quarter of 2013 affected income taxes of discontinued operations. Such changes are also expected to occur in future periods and impact income taxes of discontinued operations.

San Onofre Outage, Inspection and Repair Issues

Tube Leak and Repairs

As discussed in the 2012 Form 10-K, replacement steam generators were installed at San Onofre in 2010 and 2011. In the first quarter of 2012, a water leak suddenly occurred in one of the heat transfer tubes in San Onofre's Unit 3 steam generators and the Unit was safely taken off-line. At the time, Unit 2 was off-line for a planned outage when areas of unexpected tube to support structure wear were found. Each Unit will be restarted only when and if SCE determines that it is safe to do so and when start-up has been approved by the NRC pursuant to the terms of a Confirmatory Action Letter (“CAL”) issued by the NRC in March 2012.

Both Units have remained off-line for extensive inspections, testing and analysis of their steam generators. Using a team of outside experts, SCE has determined that the leak was caused by unexpected excessive wear from tube-to-tube contact; similar wear was observed in Unit 2 but was restricted to two tubes and less severe. Both Unit 2 and Unit 3 also had tube-to-support structure wear. As a result of these findings, SCE has plugged and removed from service all tubes showing excessive wear in each of the steam generators. In addition, SCE preventively plugged all tubes in contact with retainer bars or in the area of the tube bundles where tube-to-tube contact occurred.

NRC Processes and Restart Plans

In October 2012, SCE submitted to the NRC a response to the CAL and restart plans for Unit 2, which were based on work done by engineering groups from three independent firms with expertise in steam generator design and manufacturing. Using different methodologies, each independent outside engineering group agreed that it would be safe to restart Unit 2 and operate at a reduced power level (70%) for approximately five months, followed by a mid-cycle scheduled outage and inspection, and SCE has proposed to the NRC that it be permitted to restart Unit 2 under the CAL in accordance with these operational assessments. In addition to these requirements, the restart plan covers repairs, corrective actions and operating parameters and also includes additional monitoring, detection and response activities.

The NRC has been engaged in conducting a series of inspections, data requests, evaluations, reviews and public meetings about the causes of the steam generator malfunction and damage and to verify that SCE has performed the actions described in the CAL response and as otherwise required by its obligations as a nuclear operator. As part of this process, the NRC Staff (“Staff”) made numerous requests for additional information including whether language in San Onofre Technical Specifications that requires retention of structural integrity of the steam generator tubes “over the full range of normal operating conditions” would require either that (i) San Onofre's license be amended to specify that “normal operating conditions” would be at less than 100% thermal power, or (ii) San Onofre submit a further operational assessment demonstrating structural integrity of the steam generator tubes at 100% thermal power. Separate from the Staff's inquiry, the Atomic Safety and Licensing Board, an administrative adjudication panel within the NRC, has been engaged in proceedings about whether the requirements of the CAL necessitate an NRC license amendment.

SCE advised the NRC that it did not believe that its Technical Specifications required a license amendment or an additional operational assessment to restart, but in order to expedite the NRC's reaching conclusions about San Onofre restart plans, it voluntarily submitted an additional operational assessment on March 14, 2013 addressing the issue of structural integrity at 100% thermal power and a license amendment request (“LAR”) for Unit 2 on April 5, 2013. The LAR is intended as a temporary change for approximately two years, after which SCE would be required to obtain the necessary amendments for long-term power operation. The LAR was accompanied by SCE's analysis that the license amendment involves “no significant hazards consideration” (“NSHC”). Most license amendments issued by the NRC are issued with a NSHC

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designation. The NRC published SCE's LAR in the Federal Register on April 16, 2013. Under applicable statutory provisions, third parties may comment on the LAR and NSHC within 30 days of such publication and file petitions to intervene within 60 days of the publication date. If there is a request for a hearing or petition to intervene made within the initial 30-day period, the NRC must make a NSHC determination prior to issuance of the license amendment. If the NRC Staff makes a NSHC determination, then the NRC Staff may issue a license amendment without further proceedings unless the NRC itself chooses to review the Staff's determination. If the Staff does not make such a NSHC determination, then the LAR could become subject to an extensive public hearing process prior to its issuance. Any such determination by the Staff could also be subject to a motion for stay of issuance of the license amendment before the NRC or the applicable United States Court of Appeals.

Obtaining a license amendment with a NSHC designation does not replace the technical evaluation being conducted under the CAL process, and restart of Unit 2 will still require approval under the CAL whether or not a license amendment is issued with a NSHC. Thus, there is no set or predetermined time period for approval of Unit 2's proposed restart and no assurance that the Staff will determine that SCE's proposed license amendment qualifies for a NSHC designation.

As part of the NRC's review of the San Onofre outage and proceedings pursuant to the CAL the NRC appointed an Augmented Inspection Team to review SCE's performance. SCE has been advised that the NRC's Office of Investigations has initiated an investigation into the accuracy and completeness of information SCE has provided to the NRC since the outage regarding the San Onofre steam generators. SCE has also been made aware of an investigation related to San Onofre by the NRC's Office of Inspector General, which generally reviews internal NRC affairs. Certain anti-nuclear groups and individual members of Congress have asserted that the NRC should await the outcome of all investigations before making any determinations about restart of Unit 2 and have alleged that documents submitted by MHI indicate that SCE knew of deficiencies in the steam generator when they were installed, something which SCE has vigorously denied. SCE does not know whether such matters will affect the timing of restart. Moreover, should the NRC find a deficiency in SCE's performance or provision of information, SCE could be subject to additional NRC actions, including the imposition of penalties, and the findings could be taken into consideration in the CPUC regulatory proceedings described below.

Accordingly, there can be no assurance about the length of time the NRC may take to review SCE's request to restart and other submissions, including the operational assessment and the LAR, or whether any such request will be granted in whole or in part. Although in connection with making the LAR, SCE asked the Staff to reach conclusions about the restart of Unit 2 by June 1 if possible, SCE does not expect that such date will be met. Moreover, inasmuch as Unit 3 had more tube-to-tube wear than Unit 2, it remains unclear whether Unit 3 will be able to restart without additional repairs and corrective actions. The ability to restart Unit 3 may also be affected by the operating experience of Unit 2. Each Unit will only be restarted when any necessary repairs and appropriate mitigation plans for that Unit are completed in accordance with the CAL, and the NRC and SCE are satisfied that it is safe to do so. SCE has also been engaged in the analysis of what repairs, if any, could be undertaken to restore the steam generators for both Units to their originally specified capabilities safely, and has been advised by MHI that a possible course of action would be replacement of significant portions of the steam generators, a process that could take more than five years.

If SCE is unable to restart Unit 2, retirement of Unit 2 could also result in retirement of Unit 3. If Unit 2 does restart, then SCE will assess the feasibility of pursuing a restart of Unit 3 without extensive repairs. Without a restart of Unit 2, a decision to retire one or both Units would likely be made before year-end 2013. A determination of whether to pursue a Unit 3 restart following Unit 2's restart might also be made by year-end, although it could take longer and may ultimately depend on the results of Unit 2 operations and inspections after year-end 2013. The ability to restart one or both of the Units without extensive repairs will likely impact SCE's continued exploration of long-term repairs.

CPUC Review

As further discussed in the 2012 Form 10-K, under California Public Utilities Code Section 455.5, SCE is required to notify the CPUC if either of the San Onofre Units has been out of service for nine consecutive months (not including preplanned outages). SCE provided such notice to the CPUC on November 1, 2012 for Unit 3 and December 6, 2012 for Unit 2. In October 2012 the CPUC issued an Order Instituting Investigation (“OII”) that consolidated all San Onofre issues in related regulatory proceedings and considers appropriate cost recovery for all San Onofre costs, including among other costs, the cost of the steam generator replacement project, substitute market power costs, capital expenditures, operations and maintenance costs, and seismic study costs. The Order requires that all San Onofre-related costs incurred on and after January 1, 2012 be tracked in a memorandum account and, to the extent included in rates, collected subject to refund. The first two phases of the OII are focused on these 2012 costs. SCE filed an application in January 2013 seeking a reasonableness determination regarding these costs. The Order also states that the CPUC will determine whether to order the immediate removal, effective as of the date of the order, of all costs related to San Onofre from SCE's rates, with placement of those costs in a deferred debit account pending the return of one or both Units to useful service, or other possible action.

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Various other parties have filed testimony in the OII asking for the disallowance of some or all of the San Onofre-related costs. The third and fourth phases of the OII will focus on the steam generator replacement project and San Onofre 2013 revenue requirement, respectively. On March 15, 2013, SCE filed its final costs for the San Onofre Steam Generator project, which were within the amount authorized by the CPUC based on SCE's estimate of the costs after adjustment for inflation using the Handy-Whitman Index. It is currently expected that the investigation will be conducted in phases that will extend at least into 2014. As of the date of this report, the CPUC has only published a schedule for the first phase of the OII.

Contractual Matters

The steam generators were designed and supplied by MHI and are warranted for an initial period of 20 years from acceptance. MHI is contractually obligated to repair or replace defective items and to pay specified damages for certain repairs. MHI's liability under the purchase agreement is limited to $138 million and excludes consequential damages, defined to include "the cost of replacement power." Such limitations in the contract are subject to applicable exceptions both in the contract and under law. SCE has notified MHI that it believes one or more of such exceptions now apply and that MHI's liability is not limited to $138 million, and MHI has advised SCE that it disagrees. The disagreement may ultimately become subject to dispute resolution procedures set forth in the purchase agreement, including international arbitration. SCE, on behalf of itself and the other San Onofre co-owners, has submitted five invoices to MHI totaling $139 million for steam generator repair costs incurred through February 28, 2013. MHI paid the first invoice of $45 million, while reserving its right to challenge any of the charges in the invoice. In January 2013, MHI advised SCE that it rejected a portion of the first invoice and required further documentation regarding the remainder of the invoice. SCE has recorded its share of the invoice paid as a reduction of repair and inspection costs.

San Onofre carries both property damage and outage insurance issued by Nuclear Electric Insurance Limited (“NEIL”) and has placed NEIL on notice of claims under the two policies. The NEIL policies have a number of exclusions and limitations that may reduce or eliminate coverage. As of the date of this report, SCE has filed separate proofs of loss for Unit 2 and Unit 3 under the outage policy covering the period of the outage through December 29, 2012 that total $234 million (SCE's share of which is approximately $183 million). Pursuant to these proofs of loss SCE is seeking the weekly indemnity amounts provided under the outage policy for each Unit. Because the outage is ongoing, SCE has supplemented and will continue to supplement these proofs of loss in the future. SCE has not submitted a proof of loss under the property damage policy. No amounts have been recognized in SCE's financial statements, pending NEIL's response. To the extent any costs are recovered under the outage policy, SCE expects to refund those amounts to customers through the ERRA balancing account.

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Financial Summary

A summary of financial items related to San Onofre is as follows:

• The costs tracked in the memorandum account through March 31, 2013 under the CPUC's OII include approximately $728 million of SCE's authorized revenue requirement associated with operating and maintenance expenses, and depreciation and return on SCE's investment in Unit 2, Unit 3 and common plant. This amount is subject to refund depending on the outcome of the investigation.

•At March 31, 2013, SCE's rate base and net investment associated with San Onofre are set forth in the following table:

(in millions)	Unit 2			Unit 3			Common Plant			Total
Net investment
Net plant in service	$	619		$	453		$	240		$	1,312
Materials and supplies	—			—			100			100
Construction work in progress	23			95			100			218
Nuclear fuel	153			216			102			471
Net investment	$	795		$	764		$	542		$	2,101
Rate base
Net plant in service	$	619		$	453		$	240		$	1,312
Materials and supplies	—			—			100			100
Accumulated deferred income taxes	(118		)	(74		)	(46		)	(238		)
Amounts in rate base	$	501		$	379		$	294		$	1,174

• In 2005, the CPUC authorized expenditures of approximately $525 million ($665 million based on SCE's estimate after adjustment for inflation using the Handy-Whitman Index) for SCE's 78.21% share of the costs to purchase and install the four new steam generators in Units 2 and 3 and remove and dispose of their predecessors. SCE has spent $602 million through March 31, 2013 on the steam generator replacement project. These expenditures are included in the table above and remain subject to CPUC reasonableness review and approval.

• As a result of outages associated with the steam generator inspection and repair, electric power and capacity normally provided by San Onofre are being purchased in the market by SCE. These market power costs are typically recoverable through the ERRA balancing account subject to CPUC reasonableness review, but will now be reviewed as part of the CPUC’s OII proceeding. The cost estimate required in the OII proceeding produce a market power cost estimate that differs from SCE’s prior estimates, as the OII methodology includes cost estimates during planned outage periods (such as for refueling) and estimated foregone energy sales from excess San Onofre production. Estimated market power costs calculated in accordance with the OII methodology were approximately $444 million as of March 31, 2013, net of avoided nuclear fuel costs. Such amount includes costs of approximately $50 million associated with planned outage periods. SCE believes that such costs should be excluded as they would have been incurred even had the replacement steam generators performed as expected. The CPUC will ultimately determine a final methodology for estimating market power costs as it continues its review of the issues in the OII. Future market power costs are uncertain and will be influenced by factors such as when, if, and at what output levels either of the San Onofre Units is returned to service, as well as variations in the cost of power in the market; however, such amounts may be material.

• Through March 31, 2013, SCE's share of incremental inspection and repair costs totaled $109 million for both Units (not including payments made by MHI as described below), and repairs to restart Unit 2 at the reduced power levels described above were completed. The costs for Unit 2 may increase following NRC review under the CAL. Total incremental repair costs associated with returning Unit 3 to service, and returning both Units to service at originally specified capabilities safely, remain uncertain. SCE recorded its share of payments made to date by MHI ($36 million) as a reduction of incremental inspection and repair costs in 2012.

SCE believes that the actions taken and costs incurred in connection with the San Onofre replacement steam generators and outages have been prudent. Accordingly, SCE considers its operating, capital, and market power costs, recoverable through base rates and the ERRA balancing account, as offset by third party recoveries where applicable. SCE cannot provide assurance that either or both Units of San Onofre will be returned to service, that the CPUC will not disallow costs incurred or order refunds to customers of amounts collected in rates, or that SCE will be successful in recovering amounts from third

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parties. A delay in the restart of San Onofre Unit 2 beyond summer 2013 may impact plans for future operations of both Units. Disallowances of costs and/or refund of amounts received from customers could be material and adversely affect SCE's financial condition, results of operations and cash flows.

Capital Program

During the first three months of 2013, SCE's capital program continued to emphasize projects for maintaining reliability and expanding the capability of SCE's transmission and distribution system; upgrading and constructing new transmission lines and substations for system reliability and increased access to renewable energy; and maintaining performance of SCE's natural gas, and hydro-electric generating plants. Total capital expenditures (including accruals) were $814 million and $839 million for the first quarter of 2013 and 2012, respectively.

SCE continues to project that 2013 capital expenditures will be in the range of $3.8 billion to $4.2 billion and that 2013 – 2014 total capital expenditures will be in the range of $7.3 billion to $8.2 billion. Actual capital spending will be affected by: changes in regulatory, environmental and engineering design requirements; permitting and project delays; cost and availability of labor, equipment and materials; and other factors.

EME Chapter 11 Bankruptcy Filing

As discussed in the 2012 Form 10-K, on the Petition Date EME and certain of its wholly-owned subsidiaries filed voluntary petitions for relief under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. On December 16, 2012, Edison International, EME and certain of EME's senior unsecured noteholders entered into a Transaction Support Agreement (the "Support Agreement"). Edison International anticipates that the Bankruptcy Court will approve a plan of reorganization in which Edison International ceases to have any ownership interest as provided in the Support Agreement. As a result of the bankruptcy filing, Edison International no longer consolidates the earnings and losses of EME or its subsidiaries effective December 17, 2012 and has reflected its ownership interest in EME utilizing the cost method. Edison International recorded a full impairment of the investment in EME in 2012. See "Notes to Consolidated Financial Statements—Note 16. Discontinued Operations" for additional information related to these bankruptcy proceedings.

Under the Support Agreement, within 150 days following the Petition Date, EME will seek authority from the Bankruptcy Court to enter into the Settlement Transaction, which must be obtained within 210 days following the Petition Date or the Support Agreement is subject to termination. Counsel for EME and for certain of its creditors have requested an extension of these dates, which request is currently under discussion. Failure to meet a deadline set forth in the Support Agreement could render it subject to termination. There can be no assurance that the Bankruptcy Court will approve the Settlement Transaction, and even if it is approved, there can be no assurance that the conditions to the effectiveness of the Settlement Transaction will be satisfied. In addition, EME is entitled to terminate the Support Agreement and consider alternative transactions in accordance with its fiduciary duties.

RESULTS OF OPERATIONS

SCE

SCE's results of operations are derived mainly through two sources:

• Utility earning activities – representing revenue authorized by the CPUC and FERC which is intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its net investment in generation, transmission and distribution assets. The annual revenue requirements are comprised of authorized operation and maintenance costs, depreciation, taxes and a return consistent with the capital structure. Also, included in utility earnings activities are revenues or penalties related to incentive mechanisms, other operating revenue, and regulatory charges or disallowances, if any.

• Utility cost-recovery activities – representing CPUC- and FERC-authorized balancing accounts which allow for recovery of specific project or program costs, subject to reasonableness review or compliance with upfront standards. Utility cost-recovery activities include rates which provide recovery, subject to reasonableness review of, among other things, fuel costs, purchased power costs, public purpose related-program costs (including energy efficiency and demand-side management programs), certain operation and maintenance expenses and nuclear decommissioning expenses.

The following table summarizes SCE's results of operations for the periods indicated. The presentation below separately identifies utility earning activities and utility cost-recovery activities. The 2012 GRC decision eliminated the balancing account treatment for Palo Verde operation and maintenance costs effective January 1, 2012. The tables presented below reflect a reclassification of the revenue and costs for 2012 consistent with the presentation in 2013. The reclassification of revenue and costs had no impact on earnings.

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The following table is a summary of SCE's results of operations for the periods indicated. The presentation below separately identifies utility earnings activities and utility cost-recovery activities:

	Three months ended  March 31, 2013								Three months ended March 31, 2012
(in millions)	Utility Earning Activities			Utility Cost- Recovery Activities		Total Consolidated			Utility Earning Activities			Utility Cost- Recovery Activities		Total Consolidated
Operating revenue	$	1,550		$	1,079	$	2,629		$	1,479		$	933	$	2,412
Fuel and purchased power	—			853		853			—			692		692
Operations and maintenance	559			226		785			610			241		851
Depreciation decommissioning and amortization	414			—		414			389			—		389
Property taxes and other	79			—		79			83			—		83
Total operating expenses	1,052			1,079		2,131			1,082			933		2,015
Operating income	498			—		498			397			—		397
Interest income and other	22			—		22			24			—		24
Interest expense	(125		)	—		(125		)	(121		)	—		(121		)
Income before income taxes	395			—		395			300			—		300
Income tax expense	112			—		112			99			—		99
Net income	283			—		283			201			—		201
Dividends on preferred and preference stock	27			—		27			19			—		19
Net income available for common stock	$	256		$	—	$	256		$	182		$	—	$	182
Core Earnings1						$	256							$	182
Non-Core Earnings						—								—
Total SCE GAAP Earnings						$	256							$	182

¹  See use of non-GAAP financial measures in "Management Overview—Highlights of Operating Results."

Utility Earning Activities

2013 vs 2012

Utility earning activities were primarily affected by the following:

• Higher operating revenue of $71 million primarily due to the following:

• The timing of finalizing the 2012 CPUC GRC. During the first quarter of 2012, pending the outcome of the 2012 GRC, SCE recognized GRC-related revenue based on the 2011 authorized revenue requirement. In the fourth quarter of 2012, SCE implemented its 2012 GRC which allowed SCE to recover its revenue requirement retroactive to January 1, 2012. The estimated revenue attributable to the first quarter of 2012 was $80 million.

• An increase of approximately $30 million in revenue during the first quarter of 2013 for SCE's return on its investment resulting from rate base growth and operating costs partially offset by a lower CPUC-adopted 2013 return on common equity (see "Liquidity and Capital Resources—SCE—Regulatory Proceedings—2013 Cost of Capital Application" for further information).

• Revenue recognized in 2012 related to the San Onofre Unit 2 scheduled outage.

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• Lower operation and maintenance expense of $51 million primarily due to lower costs at San Onofre and the impact from implementation of the EdisonSmartConnect^® program partially offset by $16 million in accrued severance costs. The reductions in costs at San Onofre are due to:

• $35 million of costs incurred in 2012 for the San Onofre Unit 2 scheduled outage which were not incurred in 2013.

• A decrease in incremental inspection and repairs costs from $20 million during the first quarter of 2012 to $7 million in the first quarter of 2013.

• Lower labor costs in 2013 due to the workforce reduction (see "Notes to Consolidated Financial Statements— Note 8. Compensation and Benefit Plans" for further information).

• Higher depreciation, decommissioning and amortization expense of $25 million was primarily related to increased generation, transmission and distribution investments, including capitalized software costs.

• Higher income taxes primarily due to higher pre-tax income partially offset by repair deductions. See "—Income Taxes" below for more information.

• Higher preferred and preference stock dividends related to new issuances in 2012 and 2013 partially offset by redemptions.

Utility Cost-Recovery Activities

2013 vs 2012

Utility cost-recovery activities were primarily affected by the following:

• Higher fuel and purchased power expense of $161 million was primarily driven by an increase of market power costs net of lower nuclear fuel costs in 2013 related to the San Onofre outage (see "Management Overview—San Onofre Outage, Inspection and Repair Issues" for further information). The increase also reflects the impact of higher power prices.

Supplemental Operating Revenue Information

SCE's retail billed and unbilled revenue (excluding wholesale sales and balancing account over/undercollections) was $2.3 billion for the three months ended March 31, 2013 and 2012, respectively. Retail billed and unbilled revenue reflects a sales volume decrease of $99 million, primarily due to lower load requirements, and a rate increase of $85 million due to the implementation of the 2012 GRC decision.

As a result of the CPUC-authorized decoupling mechanism, SCE earnings are not affected by changes in retail electricity sales (see "Item 1. Business—Overview of Ratemaking Process" in the 2012 Form 10-K).

Income Taxes

The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision.

	Three months ended March 31,
(in millions)	2013			2012
Income from continuing operations before income taxes	$	395		$	300
Provision for income tax at federal statutory rate of 35%	138			105
Increase (decrease) in income tax from:
Items presented with related state income tax, net:
State tax, net of federal benefit	14			10
Property-related	(42		)	(10		)
Uncertain tax positions	7			—
Other	(5		)	(6		)
Total income tax expense from continuing operations	$	112		$	99
Effective tax rate	28.4		%	33.0		%

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Property-related items increased primarily due to the recognition of income tax benefits from repair deductions for income tax purposes.

For a discussion of the status of Edison International's income tax audits, see "Notes to Consolidated Financial Statements—Note 7. Income Taxes."

Edison International Parent and Other

Results of operations for Edison International Parent and Other includes amounts from other Edison International subsidiaries that are not significant as a reportable segment, as well as intercompany eliminations.

Income (Loss) from Discontinued Operations

Income from discontinued operations, net of tax, was $12 million in the first quarter of 2013 compared to a loss of $84 million for the respective period in 2012. The 2013 income from discontinued operations reflects an income tax benefit from a revised estimate of the tax impact of expected future deconsolidation and separation of EME from Edison International (see "Management Overview—Highlights of Operating Results" for further information). The 2012 loss from discontinued operations was from net losses of EME.

LIQUIDITY AND CAPITAL RESOURCES

SCE

SCE's ability to operate its business, fund capital expenditures, and implement its business strategy is dependent upon its cash flow and access to the capital markets. SCE's overall cash flows fluctuate based on, among other things, its ability to recover its costs in a timely manner from its customers through regulated rates, changes in commodity prices and volumes, collateral requirements, interest and dividend payments to Edison International, and the outcome of tax and regulatory matters.

SCE expects to fund its 2013 obligations, capital expenditures and dividends through operating cash flows, and capital market financings of debt and preferred equity, as needed. SCE also has availability under its credit facilities to fund requirements. SCE has $800 million of long-term debt due in the first quarter of 2014. SCE's financing plans include capital market financings to retire this debt.

Available Liquidity

At March 31, 2013, SCE had a $2.75 billion five-year credit facility that matures in May 2017. The following table summarizes the status of the SCE credit facility at March 31, 2013:

(in millions)
Commitment	$	2,750
Outstanding commercial paper supported by credit facilities	(404		)
Outstanding letters of credit	(121		)
Amount available	$	2,225

Debt Covenant

The debt covenant in SCE's credit facility limits its debt to total capitalization ratio to less than or equal to 0.65 to 1. At March 31, 2013, SCE's debt to total capitalization ratio was 0.43 to 1.

Regulatory Proceedings

2013 Cost of Capital Application

In December 2012, the CPUC issued a final decision in the ratemaking capital structure and cost of capital phase of SCE's 2013 cost of capital proceeding granting SCE's requested ratemaking capital structure of 43% long-term debt, 9% preferred equity and 48% common equity. The decision adopted a return on common equity of 10.45% and adopted long-term debt and preferred stock costs of 5.49% and 5.79%, respectively. SCE has implemented the impacts of the decision in rates, effective January 1, 2013.

In March 2013, a final decision was issued in the second phase of the proceeding that reauthorized SCE's adjustment mechanism to continue for 2014 and 2015. The mechanism provides for an automatic readjustment to SCE’s capital costs if certain thresholds are reached on an annual basis. These thresholds are based on a benchmark interest index value of 5% as of

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September 2012. In September 2013 and September 2014, SCE will compare the current interest index value against the benchmark interest index value. If the difference exceeds more than 1%, SCE's CPUC-authorized cost of capital will be adjusted accordingly and the current interest index value will become the new benchmark interest index value for the next annual evaluation.

Dividend Restrictions

The CPUC regulates SCE's capital structure which limits the dividends it may pay Edison International. SCE may make distributions to Edison International as long as the common equity component of SCE's capital structure remains at or above 48% on a 13-month weighted average basis. At March 31, 2013, SCE's 13-month weighted-average common equity component of total capitalization was 48.6% resulting in a restriction on net assets of $11.7 billion. At March 31, 2013, the maximum additional dividend that SCE could pay to Edison International under this limitation was approximately $113 million.

During the first quarter of 2013, SCE made $120 million in dividend payments to Edison International. Future dividend amounts and timing of distributions are dependent upon several factors including the level of capital expenditures, operating cash flows and earnings.

Margin and Collateral Deposits

Certain derivative instruments, power procurement contracts and other contractual arrangements contain collateral requirements. Future collateral requirements may differ from the requirements at March 31, 2013, due to the addition of incremental power and energy procurement contracts with collateral requirements, if any, and the impact of changes in wholesale power and natural gas prices on SCE's contractual obligations.

Some of the power procurement contracts contain provisions that require SCE to maintain an investment grade credit rating from the major credit rating agencies. If SCE's credit rating were to fall below investment grade, SCE may be required to pay the liability or post additional collateral.

The table below provides the amount of collateral posted by SCE to its counterparties as well as the potential collateral that would be required as of March 31, 2013.

(in millions)
Collateral posted as of March 31, 20131	$	160
Incremental collateral requirements for power procurement contracts resulting from a potential downgrade of SCE's credit rating to below investment grade	37
Posted and potential collateral requirements2	$	197

¹  Collateral provided to counterparties and other brokers consisted of $27 million of cash which was offset against net derivative liabilities on the consolidated balance sheets, $10 million of cash reflected in "Other current assets" on the consolidated balance sheets and $123 million in letters of credit and surety bonds.

²  There would be no increase to SCE's total posted and potential collateral requirements based on SCE's forward positions as of March 31, 2013 due to adverse market price movements over the remaining lives of the existing power procurement contracts using a 95% confidence level.

In addition to the potential collateral requirements discussed above, if SCE's bond rating were to fall below a "B" rating, SCE would be required to post $225 million for its workers compensation self-insurance plan. See "Liquidity and Capital Resources—SCE—Workers Compensation Self-Insurance Fund" in the year-ended 2012 MD&A for further information.

Edison International Parent and Other

Edison International Parent and Other's liquidity and its ability to pay operating expenses and dividends to common shareholders is dependent on dividends from SCE, tax-allocation payments under its tax-allocation agreements with its subsidiaries, and access to bank and capital markets.

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At March 31, 2013, Edison International Parent had a $1.25 billion credit facility which matures in May 2017. The following table summarizes the status of the Edison International Parent credit facility at March 31, 2013:

(in millions)	Edison International Parent
Commitment	$	1,250
Outstanding borrowings	(16		)
Outstanding letters of credit	—
Amount available	$	1,234

The debt covenant in Edison International Parent's credit facility requires a consolidated debt to total capitalization ratio of less than or equal to 0.65 to 1. The ratio is defined in the credit agreement and generally excluded the consolidated debt and total capital of EME during the periods it was consolidated for financial reporting purposes. At March 31, 2013, Edison International Parent's consolidated debt to total capitalization ratio was 0.48 to 1.

Historical Cash Flows

SCE

	Three months ended March 31,
(in millions)	2013			2012
Net cash provided by operating activities	$	561		$	775
Net cash provided by financing activities	430			500
Net cash used by investing activities	(1,009		)	(1,269		)
Net increase (decrease) in cash and cash equivalents	$	(18	)	$	6

Net Cash Provided by Operating Activities

Net cash provided by operating activities decreased $214 million during the first quarter of 2013 compared to the same period in 2012 primarily due to the following:

• $155 million decrease from balancing accounts primarily composed of:

• $330 million decrease resulting from balancing account undercollections for fuel and power procurement-related costs in 2013 when compared to overcollections in 2012. The 2013 undercollections was due to higher power prices;

• $110 million increase from electricity sales greater than amounts included in rates; and

• $55 million from GHG auction revenue in the first quarter of 2013.

• Timing of cash receipts and disbursements related to working capital items and workforce reduction severance costs paid of $61 million during the first quarter of 2013.

• Higher cash inflow due to the increase in pre-tax income primarily driven by higher authorized revenue requirements resulting from the implementation of the 2012 CPUC GRC decision.

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Net Cash Provided by Financing Activities

The following table summarizes cash provided (used) by financing activities for the three months end March 31, 2013 and 2012. Issuances of debt and preference stock are discussed in "Notes to Consolidated Financial Statements—Note 5. Debt and Credit Agreements—Long-Term Debt" and "—Note 12. Preferred and Preference Stock."

	Three months ended March 31,
(in millions)	2013			2012
Issuances of first and refunding mortgage bonds, net	$	394		$	391
Issuances of commercial paper, net	229			(89		)
Issuances of preference stock, net	387			345
Payments of common stock dividends to Edison International	(120		)	(116		)
Redemptions of preference stock	(400		)	—
Payments of preferred and preference stock dividends	(30		)	(15		)
Other	(30		)	(16		)
Net cash provided by financing activities	$	430		$	500

Net Cash Used by Investing Activities

Cash flows from investing activities are primarily due to capital expenditures and funding of nuclear decommissioning trusts. Capital expenditures were $979 million and 1.2 billion for the three months ended March 31, 2013 and 2012, respectively, primarily related to transmission, distribution and generation investments. Net purchases of nuclear decommissioning trust investments and other were $31 million and $82 million for the three months ended March 31, 2013 and 2012, respectively.

Edison International Parent and Other

The table below sets forth condensed historical cash flow from continuing operations for Edison International Parent and Other adjusted for the non-cash impact related to the treatment of discontinued operations.

	Three months ended March 31,
(in millions)	2013			2012
Net cash used by operating activities	$	(55	)	$	—
Net cash provided by financing activities	23			6
Net cash used by investing activities	(5		)	(5		)
Net increase (decrease) in cash and cash equivalents	$	(37	)	$	1

Net Cash Used by Continuing Operating Activities

Net cash from continuing operating activities is primarily related to interest, income taxes and operating costs of Edison International Parent.

Net Cash Provided by Continuing Financing Activities

Net cash provided by continuing financing activities for the first quarter of 2013 were as follows:

• Paid $110 million of dividends to Edison International common shareholders.

• Received $120 million of dividend payments from SCE.

• Borrowed $16 million under Edison International Parent's line of credit to fund interim working capital requirements.

Net cash provided by continuing financing activities for the first quarter of 2012 were as follows:

• Paid $106 million of dividends to Edison International common shareholders.

• Received $116 million of dividend payments from SCE.

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Contingencies

Edison International has a contingency related to the EME Chapter 11 Bankruptcy Filing and SCE has contingencies related to the San Onofre Outage, Inspection and Repair Issues, SED Investigations, Four Corners New Source Review Litigation, Nuclear Insurance, Wildfire Insurance and Spent Nuclear Fuel which are discussed in "Notes to Consolidated Financial Statements—Note 9. Commitments and Contingencies."

Environmental Remediation

As of March 31, 2013, SCE had identified 23 material sites for remediation and recorded an estimated minimum liability of $124 million. SCE expects to recover 90% of its remediation costs at certain sites. See "Notes to Consolidated Financial Statements—Note 9. Commitments and Contingencies" for further discussion.

MARKET RISK EXPOSURES

Edison International and SCE's primary market risks include fluctuations in interest rates, commodity prices and volumes, and counterparty credit. Fluctuations in interest rates can affect earnings and cash flows. Fluctuations in commodity prices and volumes and counterparty credit losses may temporarily affect cash flows, but are not expected to affect earnings due to expected recovery through regulatory mechanisms. Derivative instruments are used, as appropriate, to manage market risks including market risks of SCE's customers. For a further discussion of market risk exposures, including commodity price risk, credit risk and interest rate risk, see "Notes to Consolidated Financial Statements—Note 6. Derivative Instruments" and "—Note 4. Fair Value Measurements."

Commodity Price Risk

The fair value of outstanding derivative instruments used to mitigate exposure to commodity price risk was a net liability of $929 million and $851 million at March 31, 2013 and December 31, 2012, respectively. To the extent San Onofre Unit 2 and Unit 3 are not operating, SCE may be exposed to market prices associated with replacement power costs. SCE's hedging program has taken this exposure into consideration and has entered into forward contracts to address projected market price variability. For further discussion of fair value measurements and the fair value hierarchy, see "Notes to Consolidated Financial Statements—Note 4. Fair Value Measurements."

Credit Risk

Credit risk exposure from counterparties for power and gas trading activities is measured as the sum of net accounts receivable (accounts receivable less accounts payable) and the current fair value of net derivative assets (derivative assets less derivative liabilities) reflected on the consolidated balance sheets. SCE enters into master agreements which typically provide for a right of setoff. Accordingly, SCE's credit risk exposure from counterparties is based on a net exposure under these arrangements. SCE manages the credit risk on the portfolio for both rated and non-rated counterparties based on credit ratings using published ratings of counterparties and other publicly disclosed information, such as financial statements, regulatory filings, and press releases, to guide it in the process of setting credit levels, risk limits and contractual arrangements, including master netting agreements.

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As of March 31, 2013, the amount of balance sheet exposure as described above broken down by the credit ratings of SCE's counterparties, was as follows:

	March 31, 2013
(in millions)	Exposure2		Collateral			Net Exposure
S&P Credit Rating1
A or higher	$	174	$	—		$	174
BBB	6		—			6
Not rated3	4		(2		)	2
Total	$	184	$	(2	)	$	182

¹  SCE assigns a credit rating based on the lower of a counterparty's S&P or Moody's rating. For ease of reference, the above table uses the S&P classifications to summarize risk, but reflects the lower of the two credit ratings.

²  Exposure excludes amounts related to contracts classified as normal purchases and sales and non-derivative contractual commitments that are not recorded on the consolidated balance sheets, except for any related net accounts receivable.

³  The exposure in this category relates to long-term power purchase agreements. SCE's exposure is mitigated by regulatory treatment.

CRITICAL ACCOUNTING ESTIMATES AND POLICIES

For a discussion on Edison International's and SCE's critical accounting policies, see "Critical Accounting Estimates and Policies" in the year-ended 2012 MD&A.

NEW ACCOUNTING GUIDANCE

New accounting guidance is discussed in "Notes to Consolidated Financial Statements—Note 1. Summary of Significant Accounting Policies—New Accounting Guidance."

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Information responding to Item 3 is included in the MD&A under the heading "Market Risk Exposures" and is incorporated herein by reference.

ITEM 4.    CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The management of Edison International and SCE, under the supervision and with the participation of Edison International's Chief Executive Officer and Chief Financial Officer and SCE's President and Chief Financial Officer, have evaluated the effectiveness of Edison International's and SCE's disclosure controls and procedures (as that term is defined in Rules  13a-15(e) or 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")), respectively, as of the end of the first quarter of 2013. Based on that evaluation, Edison International's Chief Executive Officer and Chief Financial Officer and SCE's President and Chief Financial Officer have each concluded that, as of the end of the period, Edison International's and SCE's disclosure controls and procedures, respectively, were effective.

Changes in Internal Control Over Financial Reporting

There were no changes in Edison International’s or SCE's internal control over financial reporting, respectively, during the first quarter of 2013 that have materially affected, or are reasonably likely to materially affect, Edison International’s or SCE's internal control over financial reporting.

Jointly Owned Utility Plant

Edison International's and SCE's respective scope of evaluation of internal control over financial reporting includes their Jointly Owned Utility Projects as discussed in Note 2. Property, Plant and Equipment in the 2012 Form 10-K.

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PART II.    OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

EME Chapter 11 Filing

On December 17, 2012, EME and certain of its wholly-owned subsidiaries filed voluntary petitions for relief under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. For more information, see "Management Overview—EME Chapter 11 Bankruptcy Filing" in the MD&A and "Notes to Consolidated Financial Statements—Note 16. Discontinued Operations."

ITEM 2.    UNREGISTRED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Purchases of Equity Securities by Edison International and Affiliated Purchasers

The following table contains information about all purchases of Edison International Common Stock made by or on behalf of Edison International in the first quarter of 2013.

Period	(a) Total Number of Shares (or Units) Purchased1	(b) Average Price Paid per Share (or Unit)1			(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1, 2013 to January 31, 2013	728,034		$	46.37	—	—
February 1, 2013 to February 28, 2013	722,673		47.56		—	—
March 1, 2013 to March 31, 2013	1,471,271		50.17		—	—
Total	2,921,978		48.58		—	—

¹  The shares were purchased by agents acting on Edison International's behalf for delivery to plan participants to fulfill requirements in connection with Edison International's: (i) 401(k) Savings Plan; (ii) Dividend Reinvestment and Direct Stock Purchase Plan; and (iii) long-term incentive compensation plans. The shares were purchased in open-market transactions pursuant to plan terms or participant elections. The shares were never registered in Edison International's name and none of the shares purchased were retired as a result of the transactions.

Purchases of Equity Securities by SCE and Affiliated Purchasers

The following table contains information about all purchases of SCE Series B and Series C Preference Stock made by or on behalf of SCE in the first quarter of 2013.

Period	(a) Total Number of Shares (or Units) Purchased1	(b) Average Price Paid per Share (or Unit)1		(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1, 2013 to January 31, 2013				—	—
February 1, 2013 to February 28, 2013	4,000,000	$	100.00	4,000,000	—
March 1, 2013 to March 31, 2013				—	—
Total	4,000,000	$	100.00	4,000,000	—

¹  On February 28, 2013, SCE repurchased 2,000,000 shares of the Series B Preference Shares and 2,000,000 shares of the Series C Preference Shares, both at $100 (liquidation value) per share. The redemption of SCE's Series B and C Preference Stock was announced via an SCE press release on January 29, 2013.

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ITEM 6.    EXHIBITS

Exhibit Number	Description
10.1**	Edison International 2013 Executive Annual Incentive Program
10.2**	Edison International 2013 Long-Term Incentives Terms and Conditions
31.1	Certifications of the Chief Executive Officer and Chief Financial Officer of Edison International pursuant to Section 302 of the Sarbanes-Oxley Act
31.2	Certifications of the Chief Executive Officer and Chief Financial Officer of Southern California Edison Company pursuant to Section 302 of the Sarbanes-Oxley Act
32.1	Certifications of the Chief Executive Officer and the Chief Financial Officer of Edison International required by Section 906 of the Sarbanes-Oxley Act
32.2	Certifications of the Chief Executive Officer and the Chief Financial Officer of Southern California Edison Company required by Section 906 of the Sarbanes-Oxley Act
101.1	Financial statements from the quarterly report on Form 10-Q of Edison International for the quarter ended March 31, 2013, filed on April 30, 2013, formatted in XBRL: (i) the Consolidated Statements of Income; (ii) the Consolidated Statements of Comprehensive Income; (iii) the Consolidated Balance Sheets; (iv) the Consolidated Statements of Cash Flows; and (v) the Notes to Consolidated Financial Statements
101.2	Financial statements from the quarterly report on Form 10-Q of Southern California Edison Company for the quarter ended March 31, 2013, filed on April 30, 2013, formatted in XBRL: (i) the Consolidated Statements of Income; (ii) the Consolidated Statements of Comprehensive Income; (iii) the Consolidated Balance Sheets; (iv) the Consolidated Statements of Cash Flows; and (v) the Notes to Consolidated Financial Statements

________________________________________

** Indicates a management contract or compensatory plan or arrangement, as required by Item 15(a)3.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized.

	EDISON INTERNATIONAL		SOUTHERN CALIFORNIA EDISON COMPANY
By:	/s/ Mark C. Clarke	By:	/s/ Mark C. Clarke
	Mark C. Clarke Vice President and Controller (Duly Authorized Officer and Principal Accounting Officer)		Mark C. Clarke Vice President and Controller (Duly Authorized Officer and Principal Accounting Officer)
Date:	April 30, 2013	Date:	April 30, 2013

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