8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

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 8, 2008

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 800)

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 exhibit 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, 2008 and subsequent Quarterly Reports on Form 10-Q.

Item 2.02 Results of Operations and Financial Condition

On May 8, 2008, Edison International issued a press release reporting its financial results for the quarter ended March 31, 2008. A copy of the press release is attached as Exhibit 99.1. On the same day, members of Edison International’s management spoke to investors via a financial teleconference. The presentation attached as Exhibit 99.2 accompanied management’s comments on the financial teleconference. 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.

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/    Linda G. Sullivan

Linda G. Sullivan

Vice President and Controller

Date: May 8, 2008

EXHIBIT INDEX

Exhibit No.	Description
99.1	Edison International Press Release dated May 8, 2008
99.2	Edison International First Quarter 2008 Financial Teleconference dated May 2008

EX-99.1

Exhibit 99.1

	News Release
FOR IMMEDIATE RELEASE	Media Relations: Charles Coleman, (626) 302-7982
	www.edisonnews.com
	Investor Relations: Scott Cunningham, (626) 302-2540
	www.edisoninvestor.com

Edison International Reports First Quarter 2008 Earnings

• First quarter 2008 GAAP earnings were $0.91 per share compared to $1.01 per share in the first quarter of 2007.

• Core earnings increased 2% to $0.92 per share in the first quarter from $0.90 per share in the year-ago quarter, reflecting an increase of $0.01 per share at both Southern California Edison (SCE) and Edison Mission Group (EMG). The increase was largely due to lower net interest expense at SCE and higher gross margin at EMG’s Midwest Generation. Core earnings exclude non-core items and discontinued operations.

• The current outlook for Edison International 2008 core earnings is around the high end of its guidance range of $3.61 - $4.01 per share.

Edison International Financial Highlights

	Quarter Ended March 31,
(In millions, except per share data)	2008		2007		Change
GAAP earnings per share	$	0.91	$	1.01	$	(0.10	)
Core earnings per share	$	0.92	$	0.90	$	0.02
GAAP earnings	$	299	$	333	$	(34	)
Core earnings	$	304	$	299	$	5

ROSEMEAD, Calif., May 8, 2008 — Edison International (NYSE: EIX) today reported first quarter 2008 earnings of $0.91 per share. Excluding non-core items, first quarter 2008 core earnings were $0.92 per share, up two percent compared with $0.90 per share in the year-ago first quarter.

“First quarter results were solid. Our improved outlook for the full year reflects positive margin trends in our unregulated power generation business,” said John E. Bryson, chairman and chief executive officer of Edison International.

Note: GAAP earnings refer to net income and GAAP earnings per share refer to basic earnings per share throughout this release. Core earnings is a non-GAAP financial measure; see reconciliation of core earnings to GAAP earnings and reconciliation of core earnings guidance to GAAP earnings guidance.

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Edison International Reports First Quarter 2008 Financial Results

Page 2 of 10

Earnings from Continuing Operations

SCE’s first-quarter 2008 earnings from continuing operations were $0.46 per share, compared to earnings of $0.55 per share in the same quarter last year; this decrease was primarily due to a non-core tax benefit of $0.10 per share last year from the favorable resolution of the income tax treatment of certain environmental remediation costs. Excluding the tax item, SCE’s core earnings in the first quarter increased $0.01 per share, compared to the same quarter last year. This increase was primarily due to lower net interest expense.

EMG’s first-quarter 2008 earnings from continuing operations and core earnings were $0.49 per share, compared to $0.48 per share in the same quarter last year. The increase was primarily due to higher gross margin and the buy-out of a coal contract at Midwest Generation together with higher energy trading results. This was partially offset by lower earnings from Edison Capital and other generation projects together with higher costs associated with EMG’s growth programs.

Discontinued Operations

Edison International’s loss from discontinued operations was $(0.01) per share in the first quarter of 2008 versus earnings from discontinued operations of $0.01 per share in the first quarter of 2007; both related to the 2004 sale of its international businesses.

	Quarter Ended March 31,
Earnings (Loss) Per Share (Unaudited)	2008			2007			Change
Southern California Edison Company	$	0.46		$	0.55		$	(0.09	)
Edison Mission Group		0.49			0.48			0.01
EIX parent company and other		(0.03	)		(0.03	)		—
EIX GAAP earnings per share from continuing operations		0.92			1.00			(0.08	)
EIX GAAP earnings (loss) from discontinued operations		(0.01	)		0.01			(0.02	)
EIX GAAP earnings per share	$	0.91		$	1.01		$	(0.10	)
EIX diluted earnings per share	$	0.91		$	1.00		$	(0.09	)
	Quarter Ended March 31,
Earnings (Loss) (in millions) (Unaudited)	2008			2007			Change
Southern California Edison Company	$	150		$	180		$	(30	)
Edison Mission Group		159			155			4
EIX parent company and other		(5	)		(5	)		—
EIX income from continuing operations		304			330			(26	)
Earnings (loss) from discontinued operations		(5	)		3			(8	)
EIX net income	$	299		$	333		$	(34	)

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Edison International Reports First Quarter 2008 Financial Results

Page 3 of 10

First Quarter Reconciliation of Core Earnings to GAAP Earnings

	Quarter Ended March 31,
Core Earnings1 (Loss) Per Share (Unaudited)	2008			2007			Change
Southern California Edison Company	$	0.46		$	0.45		$	0.01
Edison Mission Group		0.49			0.48			0.01
EIX parent company and other		(0.03	)		(0.03	)		—
EIX core earnings per share		0.92			0.90			0.02
Non-core items
SCE – tax item		—			0.10			(0.10	)
Earnings (loss) from discontinued operations		(0.01	)		0.01			(0.02	)
Total non-core items		(0.01	)		0.11			(0.12	)
EIX GAAP earnings per share	$	0.91		$	1.01		$	(0.10	)
	Quarter Ended March 31,
Core Earnings1 (Loss) (in millions) (Unaudited)	2008			2007			Change
Southern California Edison Company	$	150		$	149		$	1
Edison Mission Group		159			155			4
EIX parent company and other		(5	)		(5	)		—
EIX core earnings		304			299			5
Non-core items
SCE – tax item		—			31			(31	)
Earnings (loss) from discontinued operations		(5	)		3			(8	)
Total non-core items		(5	)		34			(39	)
Total EIX net income	$	299		$	333		$	(34	)

¹ See Use of Non-GAAP Financial Measures on page 4. The impact of participating securities is included in EIX parent company and other and was $(0.01) per share in both quarters.

2008 EARNINGS GUIDANCE

The company reaffirmed its previously announced 2008 earnings guidance of $3.61 - $4.01 per share. It now sees 2008 core earnings being around the high end of the guidance range. See the risk disclosure statement on page 5 and the presentation accompanying the company’s conference call for further information.

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Edison International Reports First Quarter 2008 Financial Results

Page 4 of 10

Reconciliation of Core Earnings Guidance to GAAP Earnings Guidance

Core Earnings Per Share1	2008 Guidance
Southern California Edison	$	2.18 – 2.28
Edison Mission Group	$	1.57 – 1.87
EIX parent company and other	$	(0.14	)
EIX core earnings per share	$	3.61 – $4.01
Non-core items		—
EIX GAAP earnings per share	$	3.61 - $4.01

¹ Guidance excludes discontinued operations and non-core items. The expected impact of participating securities is ($0.05) per share and is included in EIX parent company and other.

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 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 as primary performance measurements when communicating with analysts and investors regarding our earnings results and outlook, as it allows us to more accurately compare the company’s ongoing performance across periods. Core earnings exclude discontinued operations and other non-core items and are reconciled to GAAP earnings per share.

EPS by principal operating subsidiary is based on the principal operating subsidiary net income 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. EPS and core EPS by principal operating subsidiary are reconciled to GAAP earnings per share.

Reminder: Edison International Will Hold a Conference Call Today

Today, Edison International will hold a conference call to discuss its first quarter 2008 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 (800) 356-8584 and the number for international callers is (850) 429-1225. The ID# is 11600. In addition to the live simulcast, the webcast will remain posted at www.edisoninvestor.com and telephone replays will be available through Thursday, May 15, 2008, at the following numbers: (877) 693-4277 for callers in the United States and (402) 220-0042 for international callers. The ID# is 11601.

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Edison International Reports First Quarter 2008 Financial Results

Page 5 of 10

Risk Disclosure Statement

Statements contained in this news release 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. Important factors that could cause different results are discussed under the headings “Risk Factors” and “Management’s Discussion and Analysis” in Edison International’s 2007 Form 10-K and other reports filed with the Securities and Exchange Commission and are available on our Web site at www.edisoninvestor.com. 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.

# # #

Edison International (NYSE:EIX), 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, Calif., Edison International is the parent company of Southern California Edison, the largest electric utility in California, and Edison Mission Group, a competitive power generation business and parent company to Edison Mission Energy and Edison Capital.

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Edison International Reports First Quarter 2008 Financial Results

Page 6 of 10

Edison International

Consolidated Statements of Income

	Three Months Ended March 31,
In millions, except per-share amounts	2008			2007
	(Unaudited)
Electric utility	$	2,349		$	2,222
Nonutility power generation		719			672
Financial services and other		15			18
Total operating revenue		3,083			2,912
Fuel		537			486
Purchased power		491			317
Provisions for regulatory adjustment clauses – net		172			289
Other operation and maintenance		974			880
Depreciation, decommissioning and amortization		298			313
Gain on buyout of contract and sale of assets		(17	)		—
Total operating expenses		2,455			2,285
Operating income		628			627
Interest and dividend income		14			39
Equity in income from partnerships and unconsolidated subsidiaries – net		2			17
Other nonoperating income		25			17
Interest expense – net of amounts capitalized		(171	)		(198	)
Other nonoperating deductions		(12	)		(11	)
Income from continuing operations before tax and minority interest		486			491
Income tax expense		161			129
Dividends on preferred and preference stock of utility not subject to mandatory redemption		13			13
Minority interest		8			19
Income from continuing operations		304			330
Income (loss) from discontinued operations – net of tax		(5	)		3
Net income	$	299		$	333
Weighted-average shares of common stock outstanding		326			326
Basic earnings (loss) per common share:
Continuing operations	$	0.92		$	1.00
Discontinued operations		(0.01	)		0.01
Total	$	0.91		$	1.01
Weighted-average shares, including effect of dilutive securities		329			330
Diluted earnings (loss) per common share:
Continuing operations	$	0.92		$	0.99
Discontinued operations		(0.01	)		0.01
Total	$	0.91		$	1.00
Dividends declared per common share	$	0.305		$	0.29

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Edison International Reports First Quarter 2008 Financial Results

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Edison International

Consolidated Balance Sheets

In millions	March 31, 2008			December 31, 2007
	(Unaudited)
ASSETS
Cash and equivalents	$	1,545		$	1,441
Short-term investments		35			81
Receivables, less allowance of $34 for uncollectible accounts at each date		1,038			1,033
Accrued unbilled revenue		342			370
Fuel inventory		120			116
Materials and supplies		311			316
Derivative assets		192			109
Restricted cash		3			3
Margin and collateral deposits		147			121
Regulatory assets		128			197
Accumulated deferred income taxes – net		218			167
Other current assets		339			290
Total current assets		4,418			4,244
Nonutility property – less accumulated provision for depreciation of $1,822 and $1,765 at respective dates		4,951			4,906
Nuclear decommissioning trusts		3,195			3,378
Investments in partnerships and unconsolidated subsidiaries		260			272
Investments in leveraged leases		2,486			2,473
Other investments		108			96
Total investments and other assets		11,000			11,125
Utility plant, at original cost:
Transmission and distribution		19,158			18,940
Generation		1,795			1,767
Accumulated provision for depreciation		(5,306	)		(5,174	)
Construction work in progress		1,820			1,693
Nuclear fuel, at amortized cost		231			177
Total utility plant		17,698			17,403
Derivative assets		135			122
Restricted cash		45			48
Rent payments in excess of levelized rent expense under plant operating leases		765			716
Regulatory assets		2,726			2,721
Other long-term assets		1,164			1,144
Total long-term assets		4,835			4,751
Total assets	$	37,951		$	37,523

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Edison International Reports First Quarter 2008 Financial Results

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Edison International

Consolidated Balance Sheets

In millions	March 31, 2008			December 31, 2007
	(Unaudited)
LIABILITIES AND SHAREHOLDERS’ EQUITY
Short-term debt	$	400		$	500
Long-term debt due within one year		164			18
Accounts payable		807			979
Accrued taxes		119			49
Accrued interest		223			160
Counterparty collateral		48			42
Customer deposits		221			219
Book overdrafts		192			212
Derivative liabilities		203			125
Regulatory liabilities		1,201			1,019
Other current liabilities		814			933
Total current liabilities		4,392			4,256
Long-term debt		9,325			9,016
Accumulated deferred income taxes – net		5,201			5,196
Accumulated deferred investment tax credits		112			114
Customer advances		149			155
Derivative liabilities		111			101
Power-purchase contracts		22			22
Accumulated provision for pensions and benefits		1,133			1,089
Asset retirement obligations		2,925			2,892
Regulatory liabilities		3,256			3,433
Other deferred credits and other long-term liabilities		1,654			1,595
Total deferred credits and other liabilities		14,563			14,597
Total liabilities		28,280			27,869
Minority interest		282			295
Preferred and preference stock of utility not subject to mandatory redemption		907			915
Common stock, no par value (325,811,206 shares outstanding at each date)		2,238			2,225
Accumulated other comprehensive loss		(242	)		(92	)
Retained earnings		6,486			6,311
Total common shareholders’ equity		8,482			8,444
Total liabilities and shareholders’ equity	$	37,951		$	37,523

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Edison International Reports First Quarter 2008 Financial Results

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Edison International

Consolidated Statements of Cash Flows

	Three Months Ended March 31,
In millions	2008			2007
	(Unaudited)
Cash flows from operating activities:
Net income	$	299		$	333
Less: Income (loss) from discontinued operations		(5	)		3
Income from continuing operations		304			330
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization		298			313
Realized loss on impairment of nuclear decommissioning trusts		45			8
Other amortization		27			31
Gain on buyout of contract and sale of assets		(17	)		—
Stock based compensation		6			6
Minority interest		8			19
Deferred income taxes and investment tax credits		31			(158	)
Equity in income from partnerships and unconsolidated subsidiaries		(2	)		(16	)
Income from leveraged leases		(13	)		(16	)
Regulatory assets		77			173
Regulatory liabilities		186			152
Levelized rent expense		(48	)		(49	)
Derivative assets		(96	)		(105	)
Derivative liabilities		(162	)		(201	)
Other assets		(20	)		(14	)
Other liabilities		92			226
Margin and collateral deposits – net of collateral received		(21	)		(7	)
Receivables and accrued unbilled revenue		22			77
Inventory and other current assets		(35	)		(90	)
Book overdraft		(20	)		24
Accrued interest and taxes		133			266
Accounts payable and other current liabilities		(215	)		(238	)
Distributions and dividends from unconsolidated entities		(2	)		(1	)
Operating cash flows from discontinued operations		(5	)		3
Net cash provided by operating activities		573			733
Cash flows from financing activities:
Long-term debt issued		677			30
Long-term debt issuance costs		(9	)		(1	)
Long-term debt repaid		(7	)		(95	)
Bonds repurchased		(212	)		—
Preference stock redeemed		(7	)		—
Rate reduction notes repaid		—			(62	)
Short-term debt financing – net		(100	)		120
Shares purchased for stock-based compensation		(24	)		(106	)
Proceeds from stock option exercises		7			39
Excess tax benefits related to stock option exercises		6			17
Dividends to minority shareholders		(17	)		(24	)
Dividends paid		(99	)		(94	)
Net cash provided (used) by financing activities	$	215		$	(176	)

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Edison International Reports First Quarter 2008 Financial Results

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Edison International

Consolidated Statements of Cash Flows

	Three Months Ended March 31,
In millions	2008			2007
	(Unaudited)
Cash flows from investing activities:
Capital expenditures	$	(705	)	$	(691	)
Purchase of interest of acquired companies		—			(4	)
Proceeds from sale of property and interests in projects		2			—
Proceeds from nuclear decommissioning trust sales		829			1,029
Purchases of nuclear decommissioning trust investments and other		(859	)		(1,062	)
Proceeds from partnerships and unconsolidated subsidiaries, net of investment		9			15
Maturities and sales of short-term investments		47			1,422
Purchase of short-term investments		(1	)		(1,339	)
Restricted cash		2			38
Customer advances for construction and other investments		(8	)		(59	)
Net cash used by investing activities		(684	)		(651	)
Net increase (decrease) in cash and equivalents		104			(94	)
Cash and equivalents, beginning of period		1,441			1,795
Cash and equivalents, end of period	$	1,545		$	1,701

EX-99.2

Exhibit 99.2

Leading the Way in ElectricitySM

First Quarter 2008

Financial Teleconference

May 8, 2008

EDISON INTERNATIONAL®

Leading the Way in ElectricitySM

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. Important factors that could cause different results are discussed under the headings “Risk Factors” and “Management’s Discussion and Analysis” in Edison International’s 2007 Form 10-K and other reports filed with the Securities and Exchange Commission are available on our website: www.edisoninvestor.com. 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.

EDISON INTERNATIONAL®

1

Leading the Way in ElectricitySM

First Quarter Earnings Summary

GAAP

Net Income

($ millions)

Reported EPS

$333

$299

$1.01

$0.91

1Q 07 1Q 08

1Q 07 1Q 08

Core1

Net Income

($ millions)

EPS

$299

$304

$0.90

$0.92

1Q 07 1Q 08

1Q 07 1Q 08

1 GAAP earnings per share refers to basic earnings per share. See slide 3 for reconciliation of core earnings to GAAP earnings. Core earnings is defined as GAAP earnings less discontinued operations and other non-core items.

EDISON INTERNATIONAL®

2

Leading the Way in ElectricitySM First Quarter Financial Results Reconciliation of Core Earnings to GAAP Earnings

Core Earnings 1Q 07 1Q 08 Variance

SCE $ 0.45 $ 0.46 $ 0.01

EMG 0.48 0.49 0.01

EIX parent company (0.03) (0.03) —and other

Core EPS1 $ 0.90 $ 0.92 $ 0.02

Non-core Items

SCE $ 0.10 $ — $ (0.10)

EMG 0.01 (0.01) (0.02)

Total Non-Core $ 0.11 $ (0.01) $ (0.12)

Basic EPS $ 1.01 $ 0.91 $ (0.10)

Diluted EPS $ 1.00 $ 0.91 $ (0.09)

Core Earnings Variances

SCE

Lower net interest expense 0.01

EMG

Midwest Generation

Higher gross margin mainly from higher realized prices, lower 0.12 interest expense and favorable buy-out of a coal contract

EMMT2

Higher income from energy trading 0.03

Homer City

Lower generation and realized prices (0.02)

Edison Capital

Lower gains from Global Infrastructure Funds (0.03)

Income from other projects (0.03) Corporate expense and other items

Higher EME interest expense and higher expenses related to (0.06) growth activities

Non-Core Variances

SCE 1Q 07: Resolution of the tax treatment of certain (0.10) environmental remediation costs EMG 1Q 07: Lakeland distributions $0.01; 1Q 08: Foreign (0.02) exchange losses on contract indemnity ($0.01)

1 See Use of Non-GAAP Financial Measures in appendix. The impact of participating securities is included in EIX parent company and other, and was $(0.01) per share for each of the quarters ended March 31, 2008 and 2007.

2 EMMT overhead is included in Corporate expense and other items.

EDISON INTERNATIONAL®

3

Leading the Way in Electricity SM

Midwest Generation – Operating Performance

1Q 07 vs. 1Q 08

• Generation lower by 2.9% in 1Q 08 largely due to a forced outage at Powerton

• Higher load factor

Operating Statistics 1Q 07 1Q 08

Total Generation (GWh) 8,630 8,383

Equivalent Availability 88.0 % 82.5 %

Capacity Factor 71.2 % 70.3 %

Load Factor 80.9 % 85.3 %

Forced Outage Rate 5.9 % 11.8 %

All-in average realized price increased 7% in 1Q 08 compared to last year

All-in Average Realized Prices1

$/MWh

$60

$40

$20

$0

$52.31

$39.68

$12.63

$56.24

$42.16

$14.08

1Q 07 1Q 08

Average realized gross margin ($/MWh)2 Average fuel and emission costs ($/MWh)

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

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

EDISON INTERNATIONAL®

4

Leading the Way in ElectricitySM

Homer City – Operating Performance

1Q 07 vs. 1Q 08

• Generation lower by 3.1% reflecting higher forced outage rate and lower off-peak demand

Operating Statistics 1Q 07 1Q 08

Total Generation (GWh) 3,293 3,192

Equivalent Availability 86.5 % 87.5 %

Capacity Factor 80.8 % 77.5 %

Load Factor 93.3 % 88.5 %

Forced Outage Rate 5.8 % 9.5 %

All-in average realized price decreased 2% in 1Q 08 compared to last year

All-in Average Realized Prices1

$/MWh

$0

$20

$40

$60

$21.81

$37.91

$59.72

$22.57

$35.85

$58.42

1Q 07 1Q 08

Average realized gross margin ($/MWh)2 Average fuel and emission costs ($/MWh)2

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

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

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EMG Hedge Program Status

Status at March 31, 2008 – No Significant Hedging Activity in 1Q 08

Energy Only Contracts

Remainder of

2008 2009 2010

Midwest Generation

Megawatt Hours 7,746 7,692 3,472

Average Price ($/MWh) $ 60.85 $ 62.38 $ 62.58

Load Requirement Services Contracts

Estimated MWh1 3,689 1,571 —

Average Price ($/MWh)2 $ 64.21 $ 63.65 —

Total estimated GWh hedged 11,436 9,263 3,472

Coal under contract (in millions of tons) 12.3 11.7 11.7

Homer City

Total estimated GWh hedged 5,434 2,867 1,022

Average Price ($/MWh)3 $ 60.84 $ 73.84 $ 77.80

Coal under contract (in millions of tons) 4.3 4.4 0.4

1 The amount of power sold is a portion of the retail load of the purchasing utility and can vary significantly with variations in that retail load. Retail load depends upon a number of factors, including the time of day and year, and the utility’s number of new and continuing customers. Estimated MWh have been forecast based on historical patterns and on assumptions regarding the factors that may affect retail loads in the future. The actual load will vary from that used for the above estimate, and the amount of variation may be material.

2 The average price per MWh, which is subject to a seasonal price adjustment, represents the sale of a bundled product that includes, but is not limited to, energy, capacity and ancillary services. Also, Midwest Generation will incur charges from PJM as a load-serving entity. Thus, the average price per MWh is not comparable to the sale of power under an energy only contract. The average price per MWh represents the sale of the bundled product based on an estimated customer load profile.

3 The average price/MWh for Homer City’s hedge position is based on PJM West Hub prices. As a result of transmission congestion in the PJM, actual energy prices at the Homer City busbar have been lower than those at the PJM West Hub.

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Liquidity Profile

Available Liquidity at March 31, 2008

EIX Parent

Sources ($ in Millions) SCE EMG Co. & Other Total1

Credit Facility $ 2,500 $ 1,100 $ 1,500 $ 5,100

Credit Facility (availability) $ 1,883 $ 937 $ 1,500 $ 4,320

Cash & short term investments2 283 1,222 75 1,580

Available Liquidity $ 2,166 $ 2,159 $ 1,575 $ 5,900

1 Total amounts do not imply any credit support among entities except as specified in each credit facility.

2 SCE amount includes $113 million held by SCE’s consolidated variable interest entities.

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2008 Earnings Guidance

Reconciliation of Core Earnings Guidance to GAAP Earnings Guidance

2008 Guidance Reaffirmed

Core EPS1 2007 Results as of 5/8/2008

Southern California Edison $ 2.07 $ 2.18 — $ 2.28

Edison Mission Group 1.72 1.57 — 1.87

EIX parent company and other (0.10) (0.14)

EIX core earnings per share $ 3.69 $ 3.61 — $ 4.01

Non-Core Items

Southern California Edison 0.10 — —

Edison Mission Group (0.46) — —

Total Non-Core Items $ (0.36) $ — — $ —

EIX GAAP earnings per share $ 3.33 $ 3.61 — $ 4.01

The current outlook for EIX

2008 Core Earnings is around

the high end of the guidance range No change in Key Factors and

Assumptions Provided on February 27, 2008 SCE

11.5% Return on Equity Energy Efficiency potential of $0.08 per share EMG

Forward hedge positions and

prices as of 1/31/08

EMMT pre-tax trading margin

$75M

Lower pre-tax earnings from

EMG’s Sycamore and Watson

projects

Other

Excludes discontinued operations

and non-core items

1 See Use of Non-GAAP Financial Measures in appendix. The impact of participating securities is $(0.04) per share for 2007 results and the expected impact of participating securities is $(0.05) per share for 2008 guidance and are included in EIX parent company and other. GAAP earnings per share refers to basic earnings per share.

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Appendix

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EMG Comparative Operating Statistics

1Q 07 1Q 08 Variance %

Midwest Generation

Generation (in GWh)

Energy Only contracts 6,698 6,538

Load Requirement Services Contracts 1,932 1,845

Total 8,630 8,383 (247) (3)%

Performance

Equivalent Availability Rate (EAF) 88.0% 82.5% -5.5%

Forced Outage Rate (EFOR) 5.9% 11.8% 5.9%

Pricing Information

Average Realized Energy Price ($/MWh)

Energy Only Contracts $ 49.06 $ 53.16 $ 4.10 8%

Load Requirement Services Contracts $ 61.89 $ 62.35 $ 0.46 1%

Average Cost of Fuel ($/MWh) $ 12.63 $ 14.08 $ 1.45 11%

Flat Energy Price - Nihub ($/MWh) $ 44.81 $ 53.38 $ 8.57 19%

Homer City

Generation (in Gwh) 3,293 3,192 (101) (3)%

Performance

Equivalent Availability Rate (EAF) 86.5% 87.5% 1.0%

Forced Outage Rate (EFOR) 5.8% 9.5% 3.7%

Pricing Information

Average Realized Energy Price ($/MWh) $ 57.86 $ 55.94 ($ 1.92) (3)%

Average Cost of Fuel ($/MWh) $ 21.81 $ 22.57 $ 0.76 3%

Flat Energy Price - PJM West Hub ($/MWh) $ 59.86 $ 68.52 $ 8.66 14%

Flat Energy Price - HC Busbar ($/MWh) $ 53.19 $ 60.48 $ 7.29 14%

Flat Energy Price - Basis (PJM West Hub - HC Busbar) $6.67 $8.04 $ 1.37

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EMG Capacity Sales

Status at March 31, 2008 – No New Capacity Auctions in 1Q 08

Apr 1, 2008 — May 31, 2008 Jun 1, 2008 — May 31, 2009 Jun 1, 2009 — May 31, 2010 Jun 1, 2010 — May 31, 2011

Midwest Homer Midwest Homer Midwest Homer Midwest Homer Megawatts except price per MW-day Generation City Generation City Generation City Generation City

Installed Capacity 5,776 1,884 5,776 1,884 5,776 1,884 5,477 1,884

Less: Net capacity held due to load requirement services contracts,1 and retained for outages (2,647) (173) (1,942) (159) (447) (214) (548) (71)

Net Capacity Available for Sale 3,129 1,711 3,834 1,725 5,329 1,670 4,929 1,813

Fixed Price Capacity Sales RPM Auction Process

• Net Capacity Sold3 2,629 786 2,978 820 4,614 1,670 4,929 1,813

• Price per MW-day3 $37.27 $40.80 $123.77 $113.22 $102.04 $191.32 $174.29 $174.29

Non-unit Specific Capacity Sales

• Net Capacity Sold 500 — 880 — 715 — — —

• Price per MW-day (Net) $21.31 $ — $64.35 $ — $71.46 $ — $ — $ —

Variable Capacity Sales Third Party Transaction

• Capacity — 925 — 905 — — — —

• Expected price per MW-day2 $ — $70.37 $ — $63.96 $ — $ — $ — $ —

Total Capacity Sold 3,129 1,711 3,858 1,725 5,329 1,670 4,929 1,813

Average Price per MW-Day $34.72 $56.79 $110.22 $87.38 $97.94 $191.32 $174.29 $174.29

1 Load requirements services contracts include energy, capacity and ancillary services.

2 Actual contract price for Homer City sale is a function of NYISO capacity auction clearing prices. Expected price per MW-day is based on forward over-the-counter NYISO prices on March 31, 2008.

3 During 1Q 08, PJM updated capacity prices for the period June 1, 2008 to May 31, 2009 to reflect the final incremental auction for this planning year. Homer City’s adjusted prices for capacity per megawatt hour is $113.22 compared to the original price of $111.92. In addition, the price was affected by Midwest Generation’s participation in a supplemental RPM auction which resulted in purchasing certain capacity amounts at a price of $10/MW-day, thereby reducing the aggregate forward capacity sales for this period and increasing the effective capacity price to $123.77 at March 31, 2008.

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Washington Natural Gas 70 MW California

Natural Gas 964 MW Natural Gas (Pipeline) 479 MW Arizona Wind (Pipeline) 1,140 MW

Wyoming Wind (UC) 141 MW Utah Wind (Pipeline) 70 MW

Wind (UC) 19 MW Oklahoma Wind 95 MW

Wind (Pipeline) 300 MW Nevada Wind (Pipeline) 515 MW

New Mexico Wind 90 MW Wind (Pipeline) 1,070 MW Texas Wind 161 MW

Wind (UC) 150 MW

Wind (Pipeline) 400 MW

Iowa Wind 145 MW Wind (Pipeline) 200 MW

Minnesota Wind 75 MW

Wind (UC) 70 MW

Wind (Pipeline) 130 MW Nebraska Wind (Pipeline) 80 MW Illinois

Coal 5,471 MW

Natural Gas 305 MW Wind (Pipeline) 520 MW Maryland

Wind (Pipeline) 95 MW Wisconsin

Wind (Pipeline) 100 MW

New York Wind (Pipeline) 140 MW West Virginia Coal 40 MW

Wind (Pipeline) 232 MW Pennsylvania Coal 1,884 MW

Wind (UC) 67 MW

Operating Platform1 MW % Coal 7,395 79

Natural Gas 1,339 14

Wind 566 5 Other 153 2 9,453 100

Wind Development Pipeline2 MW

Under Construction 447

Pipeline 4,992 Turbines (Not Shown) 1,166 Thermal Pipeline3

MW

Natural Gas 479

1 Natural gas includes oil-fired; other includes Doga in Turkey (144 MW) and Huntington biomass (9 MW) which are not shown. Data as of March 31, 2008.

2 Owned or under exclusive agreement. Turbines purchased or committed to support development pipeline. Data as of March 31, 2008.

3 Contract award subject to regulatory approval with planned on-stream date June 2013.

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EMG – First Quarter Adjusted EBITDA

Reconciliation to Net Income ($ Millions) 1Q 07 1Q 08

Net income $ 159 $ 154

Addback (Deduct):

Discontinued operations (3) 5

Income from continuing operations 156 159

Interest expense 91 73

Interest income (30) (11)

Income taxes 77 83

Depreciation and amortization 37 46

EBITDA1 331 350

Production tax credits2 5 9

Adjusted EBITDA1 $ 336 $ 359

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

2 Production tax credits (PTC) are after-tax.

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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 United States and represent the company’s earnings as reported to the Securities and Exchange Commission. Our management uses core earnings and 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 as primary performance measurements when communicating with analysts and investors regarding our earnings results and outlook, as it allows us to more accurately compare the company’s ongoing performance across periods. Core earnings exclude discontinued operations and other non-core items and are reconciled to basic earnings per common share.

EPS by principal operating subsidiary is based on the principal operating subsidiary net income 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. EPS and core EPS by principal operating subsidiary are reconciled to basic earnings per common share.

EBITDA is defined as earnings before interest, income taxes, depreciation and amortization. Adjusted EBITDA includes production tax credits from EMG’s wind projects and excludes amounts from gain on the sale of assets, loss on 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.

A reconciliation of Non-GAAP information to GAAP information, including the impact of participating securities, is included either on the slide where the information appears or on another slide referenced in the presentation.

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