8-K/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K /A

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 7, 2010

EDISON INTERNATIONAL

(Exact name of registrant as specified in its charter)

CALIFORNIA	001-9936	95-4137452
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

2244 Walnut Grove Avenue

(P.O. Box 976)

Rosemead, California 91770

(Address of principal executive offices, including zip code)

626-302-2222

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

This current report and its exhibits include forward-looking statements. Edison International based these forward-looking statements on its current expectations and projections about future events in light of its knowledge of facts as of the date of this current report and its assumptions about future circumstances. These forward-looking statements are subject to various risks and uncertainties that may be outside the control of Edison International. Edison International has no obligation to publicly update or revise any forward-looking statements, whether due to new information, future events, or otherwise. This current report should be read with Edison International’s Annual Report on Form 10-K for the year ended December 31, 2009 and subsequent Quarterly Reports.

Item 2.02 Results of Operations and Financial Condition

This Form 8-K/A amends the Form 8-K filed by Edison International on May 7, 2010 in connection with its financial results for the quarter ended March 31, 2010 and financial teleconference held on May 7, 2010 (the “Original 8-K”). Edison International is furnishing this Form 8-K/A for the sole purpose of providing corrections to the presentation used in connection with the financial teleconference, which is furnished with this report on amended Exhibit 99.2. The corrections to the financial teleconference presentation do not affect the press release reporting the financial results that was furnished as Exhibit 99.1 to the Original 8-K but that exhibit is re-furnished with this Form 8-K/A for convenience. No other changes to the Original 8-K have been made.

Exhibit 99.2 is amended by correcting the Southern California Edison Company (“SCE”) Capital Investment Forecast and SCE Rate Base Forecast slides (slides 17 and 18) of the financial teleconference presentation to add the correct calendar years at base of the columns. The SCE rate base forecast and SCE capital investment forecast are not otherwise being changed or amended. The updated version of Exhibit 99.2 is attached hereto and supersedes Exhibit 99.2 to the original Form 8-K filed on May 7, 2010 in its entirety.

The information furnished in this Item 2.02 and Exhibits 99.1 and 99.2 shall not be deemed to be “filed” for purposes of the Securities Exchange Act of 1934, nor shall it be deemed to be incorporated by reference in any filing under the Securities Act of 1933. Edison International will revise the presentation posted on its website at www.edisoninvestor.com.

Item 7.01 Regulation FD Disclosure

Members of Edison International management will use the information in the presentation attached hereto as Exhibit 99.2 in meetings with institutional investors and analysts and at investor conference presentations. The presentation will also be posted on Edison International’s website as a reference on business performance and strategies for investors.

Item 9.01 Financial Statements and Exhibits

(c) Exhibits

See the Exhibit Index below.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EDISON INTERNATIONAL

        (Registrant)

/S/    MARK C. CLARKE        

Mark C. Clarke

Vice President and Controller

Date: May 10, 2010

EXHIBIT INDEX

Exhibit No.	Description
99.1	Edison International Press Release dated May 7, 2010
99.2	Corrected Edison International First Quarter 2010 Financial Teleconference Presentation dated May 7, 2010

EX-99.1

Exhibit 99.1

FOR IMMEDIATE RELEASE	Media relations contact:
	Charles Coleman, (626) 302-7982 Investor relations contact: Scott Cunningham, (626) 302-2540

Edison International Reports First Quarter 2010 Financial Results

ROSEMEAD, Calif., May 7, 2010 – Edison International (NYSE: EIX) today reported first quarter 2010 results.

First quarter 2010 basic earnings per share were $0.72 compared to $0.76 per share in the same quarter last year. Core earnings in the first quarter of 2010 were $0.82 per share compared to $0.79 per share in the same quarter last year, mainly due to higher operating results at Edison Mission Group (EMG), partially offset by expense timing differences at Southern California Edison (SCE). Core earnings exclude discontinued operations and other non-core items as discussed below.

“During the first quarter, we achieved solid earnings in a difficult power market,” said Theodore F. Craver, Jr., chairman and chief executive officer of Edison International.

First Quarter Earnings Detail

SCE’s first quarter 2010 basic earnings were $0.50 per share compared to $0.64 per share in the first quarter of 2009. This decrease included a non-core charge of $0.12 per share to reverse previously recognized tax benefits eliminated by the federal health care legislation enacted in March 2010. Core earnings were $0.62 per share for the first quarter of 2010 compared to $0.64 per share in the same quarter last year. The two-cent decrease is primarily due to higher operating expense, including the impact of curtailed spending in the first quarter of last year until the 2009 CPUC General Rate Case decision was received in March 2009. This decrease was almost entirely offset by rate base growth and higher capitalized financing costs.

-more-

Note: Basic earnings or losses per share refer to basic earnings or losses per common share attributable to Edison International throughout this release. Core earnings is a non-GAAP financial measure. See Reconciliation of Core Earnings to Basic Earnings and Reconciliation of Core Earnings Per Share Guidance to Revised Basic Earnings Per Share Guidance.

Edison International Reports First Quarter 2010 Financial Results

Page 2 of 10

EMG’s first quarter 2010 basic earnings were $0.24 per share compared to $0.14 per share in the first quarter of 2009. Core earnings were $0.22 per share compared to $0.17 per share in the same quarter last year. EMG’s 2010 core earnings increased from 2009 primarily due to higher distributions from EMG’s Doga and March Point natural gas facilities and higher trading income. Mainly offsetting this increase were lower results from EMG’s merchant coal plants driven primarily by lower energy prices and higher 2009 unrealized gains, partially offset by lower emission costs and higher capacity prices. Renewable project income was lower mainly due to less wind. First quarter 2010 non-core items include $0.02 per share of earnings from discontinued operations. First quarter 2009 per share non-core items include a $0.04 charge related to Edison Capital’s lease terminations, partially offset by $0.01 in earnings from discontinued operations.

2010 Earnings Guidance

Previously announced annual core earnings guidance of $3.15 - $3.45 per share is reaffirmed. The company has revised its 2010 GAAP earnings guidance by ($0.10) per share to reflect a $0.12 per share charge at SCE related to a change in the tax deductibility of a portion of retiree health care expenses, partially offset by earnings from discontinued operations of $0.02 per share at EMG. See the risk disclosure statement on page 3 and the financial teleconference presentation accompanying the company’s earnings conference call for further information.

Reconciliation of Core Earnings Per Share Guidance to Revised

Basic Earnings Per Share Guidance¹

Core Earnings Per Share1	March 1, 2010 2010  Earnings Guidance			Revised as of May 7,  2010 2010 Earnings Guidance
EIX core earnings	$	3.15 – $3.45		$	3.15 – $3.45
Non-Core Items :
SCE –   Tax impact of health care legislation		—		$	(0.12	)
EMG – Earnings from discontinued operations		—			0.02
EIX basic earnings	$	3.15 – $3.45		$	3.05 – $3.35
Midpoint of 2010 core guidance by business element:
SCE	$	2.80		$	2.80
EMG		0.62			0.62
EIX parent company and other		(0.12	)		(0.12	)
Total	$	3.30		$	3.30

1 See Use of Non-GAAP Financial Measures on page 3. Basic earnings per share refer to basic earnings per common share attributable to Edison International common shareholders. The expected impact of participating securities is $(0.01) per share and is included in EIX parent company and other.

About Edison International

Edison International, through its subsidiaries, is a generator and distributor of electric power and an investor in infrastructure and energy assets, including renewable energy. Headquartered in Rosemead, California, Edison International is the parent company of Southern California Edison, one of the nation’s largest electric utilities, and Edison Mission Group, a competitive power generation business and parent company to Edison Mission Energy and Edison Capital.

# # #

Edison International Reports First Quarter 2010 Financial Results

Page 3 of 10

Appendix

Use of Non-GAAP Financial Measures, Conference Call Information,

Risk Disclosure Statement and Financial Schedules

Use of Non-GAAP Financial Measures

Edison International’s earnings are prepared in accordance with generally accepted accounting principles used in the United States and represent the company’s earnings as reported to the Securities and Exchange Commission. Our management uses core earnings and earnings per share (EPS) by principal operating subsidiary internally for financial planning and for analysis of performance. We also use core earnings and EPS by principal operating subsidiary when communicating with analysts and investors regarding our earnings results and outlook to facilitate comparisons of the Company’s performance from period to period.

Core earnings is a non-GAAP financial measure and may not be comparable to those of other companies. Core earnings and core earnings per share are defined as GAAP earnings and GAAP earnings per share excluding income or loss from discontinued operations and income or loss from significant discrete items that management does not consider representative of ongoing earnings. GAAP earnings refer to net income attributable to Edison International common shareholders or attributable to the common shareholders of each subsidiary and Edison International GAAP earnings per share refers to basic earnings per common share attributable to Edison International common shareholders. Core earnings are reconciled to basic earnings in the attached tables. EPS by principal operating subsidiary is based on the principal operating subsidiaries’ net income attributable to the common shareholders of each operating subsidiary, respectively, and Edison International’s weighted average outstanding common shares. The impact of participating securities (vested stock options that earn dividend equivalents that may participate in undistributed earnings with common stock) for each principal operating subsidiary is not material to each principal operating subsidiary’s EPS and is therefore reflected in the results of the Edison International holding company, which we refer to as EIX parent company and other. EIX core EPS and core EPS by principal operating subsidiary are reconciled to basic EPS.

Reminder: Edison International Will Hold a Conference Call Today

Today, Edison International will hold a conference call to discuss its first quarter 2010 financial results at 8 a.m. (Pacific Daylight Time). Two-way participation in the telephone call is limited to financial analysts and investors, while all other interested parties are invited to participate in a simultaneous webcast at www.edisoninvestor.com. A presentation accompanying management’s comments on the conference call will be available on the web site as well at www.edisoninvestor.com. The domestic call-in number is (888) 889-2168 and the number for international callers is (773) 681-5951. The ID is “Edison”. In addition to the live simulcast, the webcast will remain posted at www.edisoninvestor.com and telephone replays will be available through May 14, 2010 at the following numbers: (866) 491-2943 for callers in the United States and (203) 369-1729 for international callers. The replay passcode is 80709.

Risk Disclosure Statement

Statements contained in this news release about future performance, including, without limitation, earnings guidance, asset and rate base growth, load growth, capital investments and other statements that are not purely historical, are forward-looking statements. These forward-looking statements reflect our current expectations; however, such statements involve risks and uncertainties. Actual results could differ materially from current expectations. These forward-looking statements represent our expectations only as of the date of this news release, and Edison International assumes no duty to update them to reflect new information, events or circumstances. Important factors that could cause different results are discussed under the headings “Risk Factors” and “Management’s Discussion and Analysis” in Edison International’s 2009 Form 10-K, most recent Form 10-Q, and other reports filed with the Securities and Exchange Commission which are available on our web site: www.edisoninvestor.com.

Edison International Reports First Quarter 2010 Financial Results

Page 4 of 10

Summary Financial Schedules

First Quarter Basic Earnings Per Share

Earnings (Loss) Per Common Share Attributable to Edison International (Unaudited)	Quarter Ended March 31,						Change
	2010			2009
SCE	$	0.50		$	0.64		$	(0.14	)
EMG		0.22			0.13			0.09
EIX parent company and other		(0.02	)		(0.02	)		—
EIX earnings from continuing operations		0.70			0.75			(0.05	)
EIX earnings from discontinued operations		0.02			0.01			0.01
EIX basic earnings1	$	0.72		$	0.76		$	(0.04	)
EIX diluted earnings	$	0.72		$	0.76		$	(0.04	)

1 The impact of participating securities on the per share amounts is included in EIX parent company and other and was zero per share for the quarter ended March 31, 2010 and $(0.01) per share for the quarter ended March 31, 2009.

First Quarter Reconciliation of Core Earnings Per Share to Basic Earnings Per Share

Earnings (Loss) Per Common Share Attributable to Edison International (Unaudited)	Quarter Ended March 31,						Change
	2010			2009
Core Earnings1
SCE	$	0.62		$	0.64		$	(0.02	)
EMG		0.22			0.17			0.05
EIX parent company and other		(0.02	)		(0.02	)		—
EIX core earnings		0.82			0.79			0.03
Non-core items
SCE –   Tax impact of health care legislation		(0.12	)		—			(0.12	)
EMG – Lease terminations		—			(0.04	)		0.04
EMG – Earnings from discontinued operations		0.02			0.01			0.01
Total non-core items		(0.10	)		(0.03	)		(0.07	)
EIX basic earnings1	$	0.72		$	0.76		$	(0.04	)

1 See Use of Non-GAAP Financial Measures on page 3. The impact of participating securities on the per share amounts is included in EIX parent company and other and was zero per share for the quarter ended March 31, 2010 and $(0.01) per share for the quarter ended March 31, 2009.

Edison International Reports First Quarter 2010 Financial Results

Page 5 of 10

First Quarter Basic Earnings

Earnings (Loss) (in millions) Attributable to Edison International (Unaudited)	Quarter Ended March 31,
	2010			2009			Change
SCE	$	164		$	208		$	(44	)
EMG		71			45			26
EIX parent company and other		(5	)		(6	)		1
EIX earnings from continuing operations		230			247			(17	)
EIX earnings from discontinued operations		6			3			3
EIX basic earnings	$	236		$	250		$	(14	)

First Quarter Reconciliation of Core Earnings to Basic Earnings

Earnings (Loss) (in millions) Attributable to Edison International (Unaudited)	Quarter Ended March 31,
	2010			2009			Change
Core Earnings1
SCE	$	203		$	208		$	(5	)
EMG		71			56			15
EIX parent company and other		(5	)		(6	)		1
EIX core earnings		269			258			11
Non-core items
SCE –   Tax impact of health care legislation		(39	)		—			(39	)
EMG – Lease terminations		—			(11	)		11
EMG – Earnings from discontinued operations		6			3			3
Total non-core items		(33	)		(8	)		(25	)
EIX basic earnings	$	236		$	250		$	(14	)

1 See Use of Non-GAAP Financial Measures on page 3.

Edison International Reports First Quarter 2010 Financial Results

Page 6 of 10

Consolidated Statements of Income	Edison International
	Three Months Ended March  31,
(in millions, except per-share amounts)	2010			2009
	(Unaudited)
Electric utility	$	2,159		$	2,189
Competitive power generation		652			624
Other		(1	)		(1	)
Total operating revenue		2,810			2,812
Fuel		295			387
Purchased power		608			540
Operations and maintenance		1,037			969
Depreciation, decommissioning and amortization		369			342
Lease terminations and other		3			21
Total operating expenses		2,312			2,259
Operating income		498			553
Interest and dividend income		19			10
Equity in income (loss) from partnerships and unconsolidated subsidiaries – net		18			(8	)
Other income		34			26
Interest expense – net of amounts capitalized		(168	)		(187	)
Other expenses		(8	)		(6	)
Income from continuing operations before income taxes		393			388
Income tax expense		150			122
Income from continuing operations		243			266
Income from discontinued operations – net of tax		6			3
Net income		249			269
Less: Net income attributable to noncontrolling interests		13			19
Net income attributable to Edison International common shareholders	$	236		$	250
Amounts attributable to Edison International common shareholders:
Income from continuing operations, net of tax	$	230		$	247
Income from discontinued operations, net of tax		6			3
Net income attributable to Edison International common shareholders	$	236		$	250
Basic earnings per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding		326			326
Continuing operations	$	0.70		$	0.75
Discontinued operations		0.02			0.01
Total	$	0.72		$	0.76
Diluted earnings per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding, including effect of dilutive securities		328			327
Continuing operations	$	0.70		$	0.75
Discontinued operations		0.02			0.01
Total	$	0.72		$	0.76
Dividends declared per common share	$	0.315		$	0.310

Edison International Reports First Quarter 2010 Financial Results

Page 7 of 10

Consolidated Balance Sheets	Edison International
(in millions)	March 31, 2010			December 31, 2009
	(Unaudited)
ASSETS
Cash and equivalents	$	1,418		$	1,673
Short-term investments		10			10
Receivables, less allowances of $53 for uncollectible accounts at both dates		843			1,017
Accrued unbilled revenue		360			347
Inventory		522			533
Derivative assets		324			357
Restricted cash		66			69
Margin and collateral deposits		129			125
Regulatory assets		303			120
Deferred income taxes		—			3
Other current assets		292			176
Total current assets		4,267			4,430
Competitive power generation and other property – less accumulated depreciation of $1,669 and $2,231 at respective dates		4,917			5,147
Nuclear decommissioning trusts		3,248			3,140
Investments in partnerships and unconsolidated subsidiaries		527			216
Investments in leveraged leases		162			160
Other investments		98			91
Total investments and other assets		8,952			8,754
Utility plant, at original cost:
Transmission and distribution		22,674			22,214
Generation		2,680			2,667
Accumulated depreciation		(6,064	)		(5,921	)
Construction work in progress		2,790			2,701
Nuclear fuel, at amortized cost		314			305
Total utility plant		22,394			21,966
Derivative assets		223			268
Restricted deposits		44			43
Rent payments in excess of levelized rent expense under plant operating leases		1,083			1,038
Regulatory assets		4,675			4,139
Other long-term assets		719			806
Total long-term assets		6,744			6,294
Total assets	$	42,357		$	41,444

Edison International Reports First Quarter 2010 Financial Results

Page 8 of 10

Consolidated Balance Sheets	Edison International
(in millions, except share amounts)	March 31, 2010		December 31, 2009
	(Unaudited)
LIABILITIES AND EQUITY
Short-term debt	$	277	$	85
Current portion of long-term debt		46		377
Accounts payable		977		1,347
Accrued taxes		190		186
Accrued interest		215		196
Customer deposits		234		238
Derivative liabilities		179		107
Regulatory liabilities		288		367
Deferred income taxes		155		—
Other current liabilities		696		884
Total current liabilities		3,257		3,787
Long-term debt		11,025		10,437
Deferred income taxes		4,522		4,334
Deferred investment tax credits		100		102
Customer advances		112		119
Derivative liabilities		931		529
Pensions and benefits		2,090		2,061
Asset retirement obligations		3,274		3,241
Regulatory liabilities		3,521		3,328
Other deferred credits and other long-term liabilities		2,542		2,500
Total deferred credits and other liabilities		17,092		16,214
Total liabilities		31,374		30,438
Common stock, no par value (800,000,000 shares authorized; 325,811,206 shares issued and outstanding at each date)		2,311		2,304
Accumulated other comprehensive income		116		37
Retained earnings		7,642		7,500
Total Edison International’s common shareholders’ equity		10,069		9,841
Noncontrolling interests		7		258
Preferred and preference stock of utility not subject to mandatory redemption		907		907
Total equity		10,983		11,006
Total liabilities and equity	$	42,357	$	41,444

Edison International Reports First Quarter 2010 Financial Results

Page 9 of 10

Consolidated Statements of Cash Flows	Edison International
	Three Months Ended March  31,
(in millions)	2010			2009
	(Unaudited)
Cash flows from operating activities:
Net income	$	249		$	269
Less: Income from discontinued operations		6			3
Income from continuing operations		243			266
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization		369			342
Regulatory impacts of net nuclear decommissioning trust earnings (reflected in accumulated depreciation)		38			32
Other amortization		24			26
Lease terminations and other		3			21
Stock-based compensation		7			5
Equity in (income) loss from partnerships and unconsolidated subsidiaries – net		(18	)		8
Distributions and dividends from unconsolidated entities		22			(3	)
Deferred income taxes and investment tax credits		218			63
Income from leveraged leases		(1	)		(11	)
Changes in operating assets and liabilities:
Receivables		150			86
Inventory		(2	)		4
Restricted cash		3			—
Margin and collateral deposits – net of collateral received		(6	)		(23	)
Other current assets		(154	)		37
Rent payments in excess of levelized rent expense		(45	)		(49	)
Accounts payable		(138	)		(141	)
Accrued taxes		(6	)		85
Other current liabilities		(182	)		(44	)
Derivative assets and liabilities – net		695			(220	)
Regulatory assets and liabilities – net		(636	)		244
Other assets		(11	)		(13	)
Other liabilities		20			(32	)
Operating cash flows from discontinued operations		6			3
Net cash provided by operating activities		599			686
Cash flows from financing activities:
Long-term debt issued		547			750
Long-term debt issuance costs		(20	)		(10	)
Long-term debt repaid		(343	)		(179	)
Bonds repurchased		—			(219	)
Short-term debt financing – net		192			(585	)
Stock-based compensation – net		(1	)		1
Dividends and distributions to noncontrolling interests		(13	)		(25	)
Dividends paid		(103	)		(101	)
Net cash provided (used) by financing activities	$	259		$	(368	)

Edison International Reports First Quarter 2010 Financial Results

Page 10 of 10

Consolidated Statements of Cash Flows	Edison International
	Three Months Ended March 31,
(in millions)	2010			2009
	(Unaudited)
Cash flows from investing activities:
Capital expenditures	$	(951	)	$	(785	)
Purchase of interest in acquired companies		—			(6	)
Proceeds from termination of leases		—			121
Proceeds from sale of nuclear decommissioning trust investments		286			658
Purchases of nuclear decommissioning trust investments and other		(335	)		(700	)
Proceeds from partnerships and unconsolidated subsidiaries, net of investment		32			10
Maturities and sale of short-term investments		2			1
Purchase of short-term investments		(1	)		(1	)
Investments in other assets		(55	)		11
Net cash used by investing activities		(1,022	)		(691	)
Effect of consolidation of variable interest entities		5			—
Effect of deconsolidation of variable interest entities		(96	)		—
Net decrease in cash and equivalents		(255	)		(373	)
Cash and equivalents, beginning of period		1,673			3,916
Cash and equivalents, end of period	$	1,418		$	3,543

EX-99.2

Exhibit 99.2

Leading the Way in Electricity SM

First Quarter 2010 Financial Teleconference

May 7, 2010 EDISON INTERNATIONAL®

Leading the Way in Electricity SM

Forward-Looking Statements

Statements contained in this presentation about future performance, including, without limitation, earnings, asset and rate base growth, load growth, capital investments, and other statements that are not purely historical, are forward-looking statements. These forward-looking statements reflect our current expectations; however, such statements involve risks and uncertainties. Actual results could differ materially from current expectations. These forward-looking statements represent our expectations only as of the date of this presentation, and Edison International assumes no duty to update them to reflect new information, events or circumstances. Important factors that could cause different results are discussed under the headings “Risk Factors,” and “Management’s Discussion and Analysis” in Edison International’s 2009 Form 10-K, most recent Form 10-Q and other reports filed with the Securities and Exchange Commission, which are available on our website: www.edisoninvestor.com. These filings also provide additional information on historical and other factual data contained in this presentation.

May 7, 2010

EDISON INTERNATIONAL®

1

Leading the Way in Electricity SM

First Quarter Earnings Summary

Q1 09 Q1 10 Variance

Core EPS1

SCE $0.64 $0.62 $(0.02)

EMG 0.17 0.22 0.05

EIX parent company (0.02) (0.02) —and other

Core EPS $0.79 $0.82 $0.03

Non-Core Items

SCE $— $(0.12) $(0.12)

EMG (0.03) 0.02 0.05

Total Non-Core $(0.03) $(0.10) $(0.07)

Basic EPS $0.76 $0.72 $(0.04)

Diluted EPS $0.76 $0.72 $(0.04)

Earnings

($ millions)

EPS

Core1

$258 $269

$0.79 $0.82

Q1 09 Q1 10

Q1 09 Q1 10

Basic

$250 $236

$0.76 $0.72

Q1 09 Q1 10

Q1 09 Q1 10

1 See Earnings Non-GAAP Reconciliations and Use of Non-GAAP Financial Measures in Appendix. The impact of participating securities is included in EIX parent company and other and was zero for the quarter ended March 31, 2010 and $(0.01) for the quarter ended March 31, 2009.

May 7, 2010

EDISON INTERNATIONAL®

2

Leading the Way in Electricity SM

SCE First Quarter Highlights

EPS Q1 09 Q1 10 Variance

Core1 $0.64 $0.62 $(0.02)

Non-Core Items — (0.12) (0.12)

Basic EPS attributable to SCE1 $0.64 $0.50 $(0.14)

Recent Developments

Key Core Earnings Drivers

Higher operating revenue $0.11

Rate base growth

Operating revenue and other

Higher operating expense (0.14)

Higher depreciation (0.05)

Higher AFUDC 0.04

Income taxes and other 0.02

Total $(0.02)

Federal healthcare legislation resulted in a $39 million non-core, non-cash charge

San Onofre Unit 2 steam generator replacement completed in February

$500 million 30-year bond financing at 5.5% coupon rate

$500 million, three-year credit facility extension completed

1 See Use of Non-GAAP Financial Measures in Appendix and First Quarter Earnings Summary slide for reconciliation of core earnings per share to basic earnings per share.

May 7, 2010

EDISON INTERNATIONAL®

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EMG First Quarter Highlights

EPS Q1 09 Q1 10 Variance

Core1 $0.17 $0.22 $0.05

Non-Core Items (0.03) 0.02 0.05

Basic EPS attributable to EMG1 $0.14 $0.24 $0.10

Key Core Earnings Drivers

Merchant coal2 $(0.05)

Renewable projects (0.03)

EMMT—trading 0.06

Natural gas projects 0.05

Corporate expense & other 0.02

Total $0.05

Recent Developments

• EMMT improved transmission congestion and basis trading

• Project finance market update:

?$160 million Cedro Hill project financing completed

?Financing in progress for Laredo Ridge project

• U.S. Treasury Grants received in April 2010 ($92 million)

• March Point project distribution ($18 million)

• Doga project distribution ($15 million)

1 See Use of Non-GAAP Financial Measures in Appendix and First Quarter Earnings Summary slide for reconciliation of core earnings per share to basic earnings per share.

2 Includes variance between derivative unrealized gains of $0.03 in 2009 and zero in 2010.

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EMG Coal-Fired Fleet

Midwest Generation (Illinois)

• 5,471 MW – Six mid-merit facilities

• Powder River Basin (PRB) coal

• Rail under contract through 2011

• Operational Statistics Q1 09 Q1 10

Total Generation (GWh) 6,642 8,212

Forced Outage Rate 7.0% 6.7%

Capacity Factor 56.3% 69.6%

Equivalent Availability 82.7% 85.9%

Homer City (Pennsylvania)

• 1,884 MW – Three base-load units

• Northern Appalachian (NAPP) coal

• Coal largely sourced locally and delivered by truck

• Operational Statistics Q1 09 Q1 10

Total Generation (GWh) 2,658 2,954

Forced Outage Rate 12.3% 10.4%

Capacity Factor 65.1% 72.4%

Equivalent Availability 76.8% 80.2%

All-in Average Realized Prices1,3

$55.53

$36.98

$18.55

$45.25

$28.62

$16.63

Q1 09

Q1 10

$61.73

$37.72

$24.01

Q1 09

$59.95

$36.38

$23.57

Q1 10

Average realized gross margin ($/MWh)2 Average realized fuel cost ($/MWh)3

1 Includes the price of energy, capacity, ancillary services, etc.

2 Average realized gross margin is equal to all-in average realized price less average fuel and emission costs.

3 See Other Non-GAAP Reconciliations and Use of Non-GAAP Financial Measures in Appendix.

May 7, 2010

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EMG Hedge Program Status

March 31, 2010

Remainder of

2010 2011 2012 2013

Midwest Generation1

Total estimated GWh hedged (NI & AEP/Dayton Hubs) 14,354 9,708 1,632 —

Average price ($/MWh) $42.97 $41.55 $41.15 $—

Coal under contract (in millions of tons)2 13.9 11.7 9.8 —

Homer City

Total estimated GWh hedged (West Hub) 2,676 2,224 1,182 —

Average price ($/MWh) $79.19 $47.14 $44.16 $—

Coal under contract (in millions of tons)2 3.5 3.9 1.7 0.5

1 As of March 31, 2010, EMMT had entered into 2.5 billion cubic feet of natural gas futures contracts (equivalent to approximately 408 GWh of energy only contracts using a ratio of 6 MMBtu to 1 MWh) for the Midwest Generation plants to economically hedge energy price risks during 2010 at an equivalent average price of approximately $38.40/MWh.

2 The amount of coal under contract in tons is calculated based on contracted tons and applying an 8,800 Btu equivalent for the Midwest Generation plants and a 13,000 Btu equivalent for the Homer City plant.

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EMG Wind Energy Business

Portfolio & Development Pipeline1

• 24 projects in service (1,185 MW)

• 4 projects under/pending construction (601 MW)

• 31 projects in development pipeline (4,000 MW)

Wind Turbine Commitments/Inventory1

• 302 MW at December 31, 2009

• 199 MW subject to dispute

• 102 MW available for new projects at March 31, 2010

Recent Activities1

• In March 2010, completed $160 million non-recourse financing for Cedro Hill wind project

• Received $92 million for U.S. Treasury grants for Phase II of Goat Wind and High Lonesome wind projects

Estimated Capital Expenditures to Complete Wind Projects at March 31, 2010 ($ millions)

MW Prior Spend Investment to Complete Total

Projects pending and/or under construction 601 $756 $646 $1,402

Turbine commitments/inventory2 102 21 86 107

Total 703 $777 $732 $1,509

Wind projects will generate significant cash benefits from Treasury grants and/or tax benefits from investment or production tax credits and accelerated depreciation

1 Data as of March 31, 2010 (except U.S. Treasury grants received in April 2010). Projects reflect EMG ownership share. Development pipeline includes projects owned or under exclusive agreements.

2 Amounts exclude balance of plant costs for 102 MW available for new projects, which would be an additional $75 million to $120 million based on typical project costs.

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Funding for 2010-11 Wind Investments

($ millions)

$1,125 $289 $104 $732 $765 $294 $471

Bank/Vendor Financing $206 million Big Sky $88 million Cedro Hill4

U.S. Treasury Grants $92 million received in April 2010 $379 million anticipated in 20115

2010-2011 Spend (at 12/31/09) Mitsubishi Turbines1 Q1 10 Spend & Other2 2010-2011 Spend3 (at 3/31/10) Sources

1 EME’s turbine supply agreement with Mitsubishi Power Systems Americas, Inc. is subject to a legal dispute. Remaining payments subject to dispute under this agreement are $289 million.

2 Includes adjustments to cost estimates.

3 Excludes balance of plant costs for 102 MW available for new projects, which would be an additional $75 million to $120 million based on typical project costs.

4 Remaining available balance.

5 Estimate based on estimated construction costs and anticipated commercial operation dates.

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EMG Capital Expenditures

March 31, 2010 ($ millions)

2009 2010 2011 2012

Midwest Generation

Plant capital expenditures $54 $73 $79 $10

Environmental expenditures1 24 93 75 —

Homer City

Plant capital expenditures 19 23 52 24

Environmental expenditures 7 1 3 22

Renewable Projects

Capital & construction3 171 698 — —

Turbine commitments2,3 265 129 4 —

Other capital expenditures 8 19 17 9

Total $548 $1,036 $230 $65

1 Environmental expenditures include primarily expenditures related to SNCR equipment. Additional expenditures, which may be material, are anticipated; however, the amounts and timing have not been determined.

2 Turbine commitment figures exclude $289 million, which is subject to dispute under provisions in one of the turbine supply agreements. In March 2010, EME filed a breach of contract complaint against this turbine supplier.

3 Amounts exclude balance of project costs for 102 MW available for new projects, which would be an additional $75 million to $120 million based on typical project costs.

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EMG Debt Covenant Status

Status at 12/31/09 3/31/10

EME Credit Facility

Funds Flow Available for Interest Ratio 1.72 1.99

Covenant threshold (not less than) 1.20 1.20

Corporate-Debt-to-Capital Ratio 0.54 0.53

Covenant threshold (not more than) 0.75 0.75

Midwest Generation Credit Facility

Debt to Capitalization Ratio 0.18 0.16

Covenant threshold (less than or equal to) 0.60 0.60

Homer City Lease Agreement

Senior Rent Service Coverage Ratio 2.96 3.10

Covenant Threshold (greater than) 1.70 1.70

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2010 Earnings Guidance

Prior 2010 Earnings Guidance as of 03/01/10 Low Mid High

Revised 2010 Earnings Guidance as of 5/07/10 Low Mid High

EIX core earnings per share1 $3.15 $3.30 $3.45 $3.15 $3.30 $3.45

Non-core items

SCE – tax impact of health care legislation — (0.12)

EMG – discontinued operations — 0.02

Total non-core items — (0.10)

EIX basic earnings per share $3.15 $3.30 $3.45 $3.05 $3.20 $3.35

Midpoint of core guidance by key business element

SCE $2.80 $2.80

EMG 0.62 0.62

EIX parent company and other1 (0.12) (0.12)

Total $3.30 $3.30

Assumptions

Southern California Edison

Average rate base $16.2 billion

Approved capital structure

48% equity, 11.5% ROE

Potential energy efficiency earnings of

$0.05 per share included

Edison Mission Group

Forward hedge position and prices as of March 31, 2010

EMMT pre-tax trading margin of $60-$110 million

Other

Normal operating and weather conditions

No changes in GAAP accounting

Excludes future discontinued operations and other non-core items

1 See Use of Non-GAAP Financial Measures in Appendix. Expected 2010 impact of participating securities is $(0.01) per share and is included in EIX parent company and other.

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Appendix

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Updates Since Our Last Presentation

• Q1 10 results and standard information

• EME wind funding (p. 8)

• EME financial covenant summary (p. 10)

• Reaffirmed core earnings guidance as of May 7, 2010 (p. 11)

• Financial strategies (p. 15)

• SCE regulatory information (p. 22)

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Delivering Superior and Sustained Value

Edison International

• A diversified and flexible platform best positions EIX in an industry undergoing unprecedented change

• Leverage regulated and competitive businesses

• Positioned for long-term earnings and dividend growth

Southern California Edison

• Balance electric reliability, rates and public policy needs to assure long-term sustainable growth

• Focus on grid reliability and transmission investments

• Establish foundation for technology investments

• Decoupled regulatory model mitigates demand and fuel cost risks

Edison Mission Group

• Achieve durable coal fleet environmental solutions

• Effectively manage merchant coal margins

• Develop wind projects for existing turbine commitments

• Emphasize liquidity management

Our key operating principles emphasize financial discipline, superior execution and innovative solutions to the challenges of today and tomorrow

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Financing Strategies for 2010-2012

Southern California Edison

• Authorized capital structure

??48% equity at 11.5% ROE

??43% long-term debt

??9% preferred stock

• Periodic debt and preferred capital market transactions

• Retain cash from operations to support balanced capital structure

Edison Mission Group

• Current wind construction program funded by non-recourse project debt and U.S. Treasury cash grants

• Balance of capital program from operating cash flow and existing liquidity

• No distributions to Edison International

Dividend Policy

• Payout ratio is 45-55% of SCE earnings

• Depending upon dividends from SCE, EIX may utilize borrowings under its credit facility to fund dividends and holding company costs

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SCE Highlights

• One of the nation’s largest electric utilities

??Over 13 million residents in service territory

??4.9 million customer accounts

??50,000 square-mile service area

??Over 110,000 miles of distribution and transmission lines

• 8-11% five-year average annual rate base growth driven by $18 billion—$21.5 billion capital program

??System reliability investments

??Smart grid technology

??California renewable energy mandate

• Constructive regulatory policy

??CPUC earnings decoupled from demand

??Energy cost changes passed through to customers

??Earnings model driven by CPUC and FERC authorized rate of return and rate base

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SCE Capital Investment Forecast

($ billions)

$2.9 2009

$4.0 2010

$4.4 2011

$4.6 2012

$4.3 2013

$4.2 2014

Total

Base Case1 $4.0 $4.4 $4.6 $4.3 $4.2 $21.5

Low Case2 $3.3 $3.7 $3.9 $3.6 $3.5 $18.0

Base Case Forecast

By Classification

$ %

Solar Rooftop Program 1.0 4

Edison SmartConnect™ 1.1 5

Generation 3.0 14

Transmission 5.5 26

Distribution 10.9 51

Total 21.5 100

By Proceeding

%

2009 CPUC Rate Case 22

2012 CPUC Rate Case 41

Other CPUC 11

FERC Rate Cases 26

Total 100

1 Subject to timely receipt of permitting, licensing and regulatory approvals.

2 Low Case reflects a 16.5% potential variability to project investment levels related to execution risk, scope change, delays, regulatory constraints and other contingencies.

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SCE Rate Base Forecast

($ billions)

$14.8 2009

$16.2 2010

$18.1 2011

$20.8 2012

$23.0 2013

$25.2 2014

5-Yr

CAGR

Base Case1 $14.8 $16.2 $18.1 $20.8 $23.0 $25.2 11%

Low Case2 $15.8 $17.2 $19.0 $20.5 $22.2 8%

1 Forecast includes: (1) 2009 CPUC GRC & FERC Decisions; (2) currently forecasted 2010-2014 FERC and 2012-2014 CPUC rate base, subject to timely receipt of permitting, licensing and regulatory approvals; (3) FERC construction work in progress forecast; (4) estimated impact of accelerated depreciation of the Economic Stimulus Act of 2009; and (5) CPUC approved solar rooftop program.

2 Reflects Low Case from SCE Capital Investment Forecast.

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SCE Transmission Investment Program

2010-2014

Project Name Phase In-Service ($ millions)1

Renewables

Tehachapi Segment 3-112 Complete/Construction 2009-2015 $1,742

Devers-Colorado River Project Licensing 2013 658

Eldorado-Ivanpah Licensing 2013 469

Other Projects Various Various 794

Total Renewables $3,663

Reliability

San Joaquin Cross Valley Loop Licensing 2012 $128

Alberhill Licensing 2014 171

Other Projects3 Various Various 1,581

Total Reliability $1,880

Grand Total $5,543

DCR 500kV Alberhill Eldorado Ivanpah Existing Substation

Tehachapi Segments 1-3 500kV Tehachapi Segments 4-11 500kV San Joaquin Cross Valley Loop

Transmission investment needed to strengthen system reliability and increase access to renewable energy

1 Subject to timely receipt of permitting, licensing and regulatory approvals. Forecast based on the Base Case (see SCE Capital Investment Forecast).

2 A portion of Segment 3 was ready for service in 2009. The remainder is under construction and will be placed in service under a phased approach from 2011 through 2013.

3 Includes new transmission projects to connect renewable generation and projects related to reliability, load growth, infrastructure replacement and grid monitoring and control.

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SCE Renewable Portfolio

SCE 2010 20% Renewable Energy Goal

Contracts are in place to meet 20% of customers’ energy requirement with renewable resources, but a portion of energy delivery may be delayed in 2010 due to transmission constraints. SCE expects to meet the 2010 goal with flexible compliance that allows banking and earmarking of past and future renewable energy surplus.

Renewable Resources

(billion kWh)

Small Hydro 4%

Solar 6%

Biomass 7%

Wind 26%

Geothermal 57%

13.6

9% Increase

94% Increase

28.7

14.8

2009

2010 20% RPS

(forecast)

2020 Potential 33% RPS

(forecast)

SCE Renewable Resource % of Total Delivered Portfolio

17%

19+%

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SCE Cost of Capital Mechanism

Moody’s Baa Utility Index—12-month moving average and spot rate through 4/30/101

Rate (%)

10

9

8

7

6

5

4

Sep-07 Dec-07 Mar-08 Jun-08 Sep-08 Dec-08 Mar-09 Jun-09 Sep-09 Dec-09 Mar-10

Spot rate1

Average from beginning of measurement period

• In 2008, – In CPUC 2009, approved the CPUC multi extended -year cost the mechanism of capital mechanism through 2012 through 2010 with authorized return on equity (ROE) at 11.5%

• Cost of Capital mechanism allows for indexed changes in SCE’s authorized ROE:

– Triggers based on 12-month average of Moody’s Baa utility bond index, measured in September of each year

– If index exceeds a 1% deadband from starting index value of 6.26%, ROE changes by half the difference

• As of April 2010, index is averaging 6.20%

– At September 2010, index must exceed 7.26% or be below 5.26% to trigger ROE change

– If not triggered, SCE’s authorized ROE for 2011 will continue at 11.5%

1 Spot rate is daily yield on Moody’s Baa Utility Bond Index and the Measurement Period Average is the average of the monthly yields on the index beginning with the first month of the measurement period.

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SCE Regulatory Key Events

Case Date of Next Number Filing Status Milestone

2010 FERC Rate Case

ER09-1534

07/31/09

September 2009, FERC accepted SCE’s proposed 2010 base transmission rates and made them effective March 1, 2010, subject to refund.

Hearings begin November 29, 2010 ALJ order is expected in March 2011.

Tehachapi Transmission

A. 07-06-031

06/28/07

December 2009, Certificate of Public Convenience and Necessity (CPCN) granted by CPUC (D. 09-12-044).

Record of Decision from U.S. Forest Service expected by Q4 2010.

DCR Transmission

A. 05-04-015

04/11/05

November 2009, the CPUC approved construction, subject to CAISO approval.

CAISO approval is expected in Q4 2010. Record of Decision expected from Bureau of Land Management in Q4 2010.

Eldorado-Ivanpah Transmission

A. 09-05-027

05/28/09

December 2009, the FERC granted conditional approval of incentives which included a 100bp ROE project adder, a 50bp incentive for CAISO participation, recovery of the ROE and incentive adders during the CWIP phase and recovery of abandoned plant costs (if any). FERC approval is conditioned upon CAISO approval and a finding that the project ensures reliability or reduces the cost of delivered power.

Draft EIR expected from CPUC in Q2 2010.

Alberhill

A. 09-09-022

09/30/09

Permit to Construct (PTC) filed September 2009 converted to CPCN filing March 2010.

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EMG Business Platform

March 31, 2010

Operating Platform1 MW %

Coal 7,395 74

Natural Gas 1,269 13

Wind 1,185 12

Other 153 1

Total 10,002 100

Wind Development Pipeline MW

Pipeline2 ~4,000

Pending and/or Under Construction 601

Thermal Pipeline

Natural Gas3 479

1 Natural gas includes oil-fired; other includes Doga in Turkey (144 MW) and Huntington biomass (9 MW) which are not shown.

2 Owned or under exclusive agreement.

3 Deliveries under the power sales agreement are expected to commence in 2013. Construction will be unable to begin until the legal challenges to the Priority Reserve emission credits are resolved or another source of credits for the project is identified.

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EMG Capacity Sales

March 31, 2010

Installed Capacity

MW

Unsold Capacity1

MW

Capacity Sold

MW

RPM Capacity Sold in Base Residual Auction

MW

Price per MW-day1

Other Capacity Sales, Net of Purchases2

MW

Average Price per MW-day

Aggregate Average Price per MW-day

April 1, 2010 to May 31, 2010 5,776 (878) 4,898 5,329 $102.04 (431) $99.23 $102.29 Midwest Generation 1,884 (206) 1,678 1,670 $191.32 8 $191.32 $191.32 Homer City

June 1, 2010 to May 31, 2011 5,477 (548) 4,929 4,929 $174.29 — — $174.29 Midwest Generation 1,884 (161) 1,723 1,813 $174.29 (90) $50.00 $180.78 Homer City

June 1, 2011 to May 31, 2012 5,477 (495) 4,982 4,582 $110.00 400 $85.00 $107.99 Midwest Generation 1,884 (113) 1,771 1,771 $110.00 — — $110.00 Homer City

June 1, 2012 to May 31, 2013 5,477 (773) 4,704 4,704 $16.46 — — $16.46 Midwest Generation 1,884 (148) 1,736 1,736 $133.37 — — $133.37 Homer City

1 Capacity not sold arises from: (1) capacity retained to meet forced outages under the RPM auction guidelines, and (2) capacity that PJM does not purchase at the clearing price resulting from the auction.

2 Other capacity sales and purchases, net includes contracts executed in advance of the RPM base residual auction to hedge the price risk related to such auction, participation in RPM incremental auctions, and other capacity transactions entered into to manage capacity risks.

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EMG – Illinois Compliance Agreement Timeline

Compliance Deadlines and Estimated Construction Timelines1

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Mercury

Compliance deadlines and rates (lb/GWh)

Construction timelines

NOx

Compliance deadlines and rates (lb/mmbtu)

Construction timelines

SO2

Compliance deadlines and rates (lb/mmbtu)

Construction timelines

Compliance scenario and capital requirements to be determined

Unit-specific technology requirements

Fleet-wide average emission rate requirements Capital spending period

1 Simplified summary of key compliance deadlines and estimated construction timelines. No decision has been made on SO2 or further mercury compliance approach and estimated capital costs. Unit-specific deadlines as of December 31 of the calendar year shown. SO2 unit-specific deadlines apply to Unit 19 at Fisk, Units 7 and 8 at Waukegan, Units 7 and 8 at Crawford, Units 7 and 8 at Joliet, Units 5 and 6 at Powerton and Units 3 and 4 at Will County.

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Edison Mission Marketing & Trading (EMMT)

• Markets energy and capacity of merchant generation fleet

• Manages gross margin by hedging power-related risks such as forward electricity prices

?Typically a rolling 12 to 24 month hedging program

?Target approximately 50% of gross margin at risk for prompt year with lesser percentages hedged in out years

• Proprietary trading in markets where it is active in merchant generation

?Primarily transmission-related transactions

?Largely in eastern markets

• Controls on types and sizes of exposures

?VaR; EaR; stress and scenario testing; volumetric, duration, and credit limits

EMMT Trading Revenue ($ millions, pre-tax)

$23

$195

$130

$143

$164

$49

$47

2004 2005 2006 2007 2008 2009 YTD

2010

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Liquidity Profile

March 31, 2010 ($ millions)

Sources

SCE

EME & Subs

EMG

Edison Capital & other1

EIX parent co.

& other

Credit Facility $2,894 $1,100 $??$1,426

Credit Facility (availability)2 $2,632 $962 $??$1,329

Cash & short term investments 75 1,034 2883 31

Available Liquidity $2,707 $1,996 $288 $1,360

1 Edison Capital & other includes Mission Energy Holding Company and other EMG subsidiaries.

2 Excludes the unused and/or unfunded commitments of subsidiaries of Lehman Brothers Holdings of $36 million for EMG. In June 2009, SCE and EIX amended their credit facilities to remove a subsidiary of Lehman Brothers Holding as a lender.

3 Includes $253 million deposit remitted to the IRS related to the Global Settlement in April 2010.

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Debt Maturity Profiles

March 31, 2010 ($ millions)

Debt Profile 2010 2011 2012 2013

Short- and Long-Term Debt Maturities

SCE $180 $— $— $—

EMG 42 91 49 555

EIX 97 — — —

Expiration of Credit Facilities

SCE $— $— $— $2,894

EME — — 600 —

MWG — — 500 —

EIX — — — 1,426

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EMG Comparative Operating Statistics

Favorable/(Unfavorable)

Q1 09

Q1 10

Variance

%

Midwest Generation

Generation (in GWh)

Energy only contracts 5,756 8,212

Load requirement services contracts 886 —

Total 6,642 8,212 1,570 24%

Performance

Equivalent availability 82.7% 85.9% 3.2%

Forced outage rate 7.0% 6.7% 0.3%

Pricing Information

Average realized energy price ($/MWh)

Energy only contracts $47.77 $39.52 $(8.25) -17%

Load requirement services contracts $62.54 $— $(62.54) 0%

Average cost of fuel ($/MWh) $18.55 $16.63 $1.92 10%

Flat energy price – NI Hub ($/MWh) $34.06 $34.53 $0.47 1%

Homer City

Generation (in GWh) 2,658 2,954 296 11%

Performance

Equivalent availability 76.8% 80.2% 3.4%

Forced outage rate 12.3% 10.4% 1.9%

Pricing Information

Average realized energy price ($/MWh) $57.03 $50.17 $(6.86) -12%

Average cost of fuel ($/MWh) $24.01 $23.57 $0.44 2%

Flat energy price – PJM West Hub ($/MWh) $49.09 $44.53 $(4.56) -9%

Flat energy price – HC Busbar ($/MWh) $44.72 $39.33 $(5.39) -14%

Flat energy price – basis (PJM West Hub – HC Busbar) $4.37 $5.20 $(0.83)

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EMG – Adjusted EBITDA

March 31, 2010 ($ millions)

Reconciliation to Earnings1 Q1 09 Q1 10

Earnings $48 $77

Addback (Deduct):

Discontinued operations (3) (6)

Income from continuing operations 45 71

Interest expense 77 68

Interest income (6) (3)

Income taxes 5 25

Depreciation and amortization 56 59

EBITDA2 177 220

Production tax credits 16 14

Addback:

Lease termination & other 18 4

Adjusted EBITDA $211 $238

1 Earnings refer to net income attributable to Edison Mission Group.

2 See Use of Non-GAAP Financial Measures in Appendix for additional information on EBITDA and Adjusted EBITDA.

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Earnings Non-GAAP Reconciliations

($ millions)

Reconciliation of EIX Core Earnings to EIX Basic Earnings

Earnings

Attributable to Edison International

Q1 09

Q1 10

Core Earnings1

SCE $208 $203

EMG 56 71

EIX parent company and other (6) (5)

EIX core earnings 258 269

Non-core items

SCE – tax impact of health care legislation — (39)

EMG – lease terminations (11) —

EMG – discontinued operations 3 6

Total non-core items (8) (33)

EIX Basic Earnings $250 $236

1 See Use of Non-GAAP Financial Measures in Appendix.

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SCE Results of Operations

($ millions)

Three Months Ended March 31, 2009

Utility Earning Activities Utility Cost- Recovery Activities Total Consolidated

Three Months Ended March 31, 2010

Utility Earning Activities Utility Cost- Recovery Activities Total Consolidated

Operating Revenue $1,204 $985 $2,189 $1,265 $894 $2,159

Fuel and purchased power — 739 739 — 689 689

Operation and maintenance 441 217 658 519 194 713

Depreciation, decommissioning and amortization 273 12 285 300 9 309

Property taxes and other 66 — 66 68 — 68

Total operating expenses 780 968 1,748 887 892 1,779

Operating income 424 17 441 378 2 380

Net interest expense and other (82) (5) (87) (72) (2) (74)

Income before income taxes 342 12 354 306 — 306

Income tax expense 121 — 121 129 — 129

Net income 221 12 233 177 — 177

Net income attributable to noncontrolling interest — 12 12 — — —

Dividends on preferred and preference stock not subject to mandatory redemption 13 — 13 13 — 13

Net income available for common stock $208 $— $208 $164 $— $164

Core Earnings $208 $203

Non-Core Earnings:1

Tax impact of health care legislation — (39)

Total SCE GAAP Earnings $208 $164

1 See Use of Non-GAAP Financial Measures in Appendix.

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Leading the Way in Electricity SM

EMG Adjusted Operating Income

($ millions)

Three Months Ended March 31, 2009 2010

Midwest Generation plants $114 $87

Homer City facilities 36 37

Renewable energy projects 27 10

Energy trading 10 47

Big 4 projects 6 4

Sunrise (5) (4)

Doga — 15

March Point 2 17

Westside projects 3 1

Leveraged lease income 11 1

Lease termination and other (20) (3)

Other operating income (expense) (7) 5 177 217

Corporate administrative and general (37) (38)

Corporate depreciation and amortization (3) (4)

Adjusted Operating Income $137 $175

Reconciliation of EMG Adjusted Operating Income (AOI) to Operating Income1

AOI $137 $175

Less:

Equity in earnings (losses) of unconsolidated affiliates (2) 18

Dividend income from projects 2 16

Production tax credits 16 14

Other income, net 1

Operating income $121 $126

1 See Use of Non-GAAP Financial Measures in Appendix.

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Leading the Way in Electricity SM

Other Non-GAAP Reconciliations

($ millions)

Reconciliation of Midwest Generation and Homer City Operating Revenues and Fuel Costs to All-in Average Realized Price/MWh and Average Realized Fuel Cost/MWh

Midwest Generation Homer City

Q1 09 Q1 10 Q1 09 Q1 10

Generation (GWh) 6,642 8,212 2,658 2,954

Operating revenues $384 $379 $165 $175

Less: Unrealized (gains) losses (15) (7) — 2

Other revenues — — (1) —

Realized revenues $369 $372 $164 $177

All-in average realized price/MWh $55.53 $45.25 $61.73 $59.95

Fuel expenses $123 $141 $64 $70

Less: Unrealized gains (losses) — (5) — —

Realized fuel expenses $123 $136 $64 $70

Average realized fuel cost/MWh $18.55 $16.63 $24.01 $23.57

Reconciliation of Midwest Generation and Homer City Operating Revenues to Segment Revenues and Fuel Costs

Operating revenues Q1 09 Q1 10

Midwest Generation $384 $379

Homer City 165 175

Renewable projects 44 30

Other revenues 31 68

Segment revenues as reported $624 $652

Fuel Costs

Midwest Generation $123 $141

Homer City 64 70

Other revenues — 2

Segment revenues as reported $187 $213

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Use of Non-GAAP Financial Measures

Edison International’s earnings are prepared in accordance with generally accepted accounting principles used in the management United States uses and represent core earnings the company’s and EPS by earnings principal as operating reported subsidiary to the Securities internally and for Exchange financial Commission. planning and Our for analysis of performance. We also use core earnings and EPS by principal operating subsidiary when communicating with analysts and investors regarding our earnings results and outlook, to facilitate the company’s performance from period to period.

Core and core earnings earnings is a per Non share -GAAP are financial defined measure as GAAP and earnings may not and be GAAP comparable earnings to per those share of other excluding companies. income Core or loss earnings from discontinued operations and income or loss from significant discrete items that management does not consider representative to the common of shareholders ongoing earnings. of each GAAP subsidiary earnings and refer Edison to International net income attributable GAAP earnings to Edison per share International refers to or basic attributable earnings per common share attributable to Edison International common shareholders. EPS by principal operating subsidiary is respectively, based on the and principal Edison operating International’s subsidiaries’ weighted net income average attributable outstanding to common the common shares. shareholders The impact of of each participating subsidiary, securities (vested stock options that earn dividend equivalents that may participate in undistributed earnings with common stock) reflected for in each the principal results of operating the Edison subsidiary International is not holding material company, to each principal which we operating refer to as subsidiary’s EIX parent EPS company and is and therefore other. production EBITDA is defined tax credits as earnings from EMG’s before wind interest, projects income and excludes taxes, depreciation amounts from and gain amortization. on the sale Adjusted of assets, EBITDA loss on includes early extinguishment of debt and leases, and impairment of assets and investments. Our management uses Adjusted EBITDA as an important financial measure for evaluating EMG.

The statistical average measures realized exclude energy unrealized price and average gains or realized losses recorded fuel costas is operating a non-GAAP revenues performance and unrealized measure gains since or such losses recorded as fuel expenses. Management believes that the average realized energy price and average realized fuel cost is period more meaningful comparisons for or investors as compared as it reflects to real- time the impact market of prices. hedge contracts at the time of actual generation in period-over-A either reconciliation on the slide of Non where -GAAP the information information to appears GAAP or information, on another including slide referenced the impact in this of participating presentation. securities, is included

May 7, 2010

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