1

ComEd Electric Distribution Rate Case

June 30, 2010

Exhibit 99.2

2

Forward-Looking Statements

This presentation includes forward-looking statements within the meaning of the

Private Securities Litigation Reform Act of 1995, that are subject to risks and

uncertainties. The factors that could cause actual results to differ materially from these

forward-looking statements include those discussed herein as well as those discussed

in (1) Exelon’s 2009 Annual Report on Form 10-K in (a) ITEM 1A. Risk Factors, (b)

ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of

Operations and (c) ITEM 8. Financial Statements and Supplementary Data: Note 18;

(2) Exelon’s First Quarter 2010 Quarterly Report on Form 10-Q in (a) Part II, Other

Information, ITEM 1A.  Risk Factors, (b) Part 1, Financial Information, ITEM 2.

Management’s Discussion and Analysis of Financial Condition and Results of

Operations and (c) Part I, Financial Information, ITEM 1. Financial Statements: Note

12 and (3) other factors discussed in filings with the Securities and Exchange

Commission (SEC) by Exelon Corporation and Commonwealth Edison Company

(Companies). Readers are cautioned not to place undue reliance on these forward-

looking statements, which apply only as of the date of this presentation. None of the

Companies undertakes any obligation to publicly release any revision to its forward-

looking statements to reflect events or circumstances after the date of this

presentation.

3

Delivery Service

Rate Case Filing Summary

$396

Total

($2,337

million

revenue

requirement)

(6)

$45

Other adjustments

(5)

$22

Bad debt costs (resets base level of bad debt to 2009 test year)

$55

Pension

and

Post-retirement

health

care

expenses

(4)

$95

Capital Structure

(3)

: ROE –

11.50% /

Common

Equity

–

47.33%

/

ROR

–

8.99%

$179

(2)

Rate Base: $7,717 million

(1)

Requested Revenue 

Increase

($ in millions)

Primary drivers of rate request are new plant investment, pension/retiree

health care and cost of capital

(1)

Filed

June

30,

2010

based

on

2009

test

year,

including

pro

forma

capital

additions

through

June

2011,

and

certain

other

2010

pro

forma

adjustments.

(2)

Includes increased depreciation expense.

(3)

Requested capital structure does not include goodwill; ICC docket 07-0566 allowed 10.3% ROE, 45.04% equity ratio and 8.36% ROR.

ROE includes 0.40% adder for energy efficiency incentive.

(4)

Reflects 2010 expense levels, compared to 2007 expense levels allowed in last rate case.

(5)

Includes reductions to O&M and taxes other than income, offset by wage increases, normalization of storm costs and the Illinois Electric

Distribution Tax, other O&M increases, and decreases in load.

(6)

Net of Other Revenues.

Note:  ROE = Return on Equity, ROR = Return on Rate Base.

4

Alternative Regulation (Alt Reg) Proposal

•

ComEd plans to make a companion Alt Reg filing proposing to recover the costs of smart

grid and other projects outside of the traditional rate case process

–

9-month statutory process

•

The

proposal

includes

a

“flow-through

mechanism”

to

recover

capital

carrying

costs

and

incremental O&M, as incurred

•

Costs and investments will be rolled in to future rate cases, when they occur

•

Assured

savings

to

customers

–

$2

million

on

capped

O&M

costs

for

program

costs

(excluding CARE)

•

Includes

an

incentive/penalty

mechanism

for

performance

above

or

under

budget

Alt Reg Proposal is permitted under ICC section 9-244

$30

$15

Man-hole refurbishment and cable replacement

-

$10

Expanded funding for low income CARE programs

$5

-

Electric Vehicle Fleet Purchase

$55

$40

-

$10

-

$20

Accelerated Smart Grid Deployment

•

190,000 additional AMI Meters and Outage Management

System Interface

•

Accelerated deployment of Distribution Automation

•

Customer Applications

Capital

O&M

$ millions

5

Residential Rate Design –

Straight Fixed/Variable Proposal

•

Filing includes a proposal to gradually move more of residential

delivery bill to the fixed

customer charge, rather than usage-based kwh component through three step phase-in

Current rate design:  37% fixed / 63% variable split

Proposed:  60%/40% split in June 2011; 70%/30% in June 2012, and

80%/20% in June 2013

•

Mitigates impact of weather and load fluctuations due to weather

and economy

•

Rate design reflects current cost structure and sends appropriate price signals

–

Fixed costs to be collected via fixed charges (i.e. Customer Charge, Meter Charge)

–

Variable costs to be collected via variable charges (i.e. per kWh)

•

Eliminates economic disincentive to promote energy efficiency

Proposed Straight Fixed/Variable rate design is consistent with ICC

orders in other recent cases

6

3.82

4.73

7.44

7.03

0.73

0.73

0.65

0.60

Residential Rate Impacts 2010 to 2011

(1)

(1)

Reflects change in distribution rates only.  Assumes Energy, Transmission and all other components remain constant as of June 2010,

except as noted above.

(2)

"All Other" includes impact of riders that are applicable to residential bills.

Unit rates: cents / kWh

All Other

(2)

Transmission

Energy

Distribution

Approximately

4% increase

July 1, 2010

July 1, 2011

Transmission: Subject to FERC

formula rate annual update.

Comments

Energy: Reflects reduced PJM capacity

price that PJM has published for the

June

2011

–

May

2012

planning

period.  Energy component may vary.

Distribution: As proposed.

12.63

13.09

Note:  Amounts may not add due to rounding.

Proposed residential rate impact of 7% will be mitigated by impact

of lower capacity prices resulting in an increase of 4%

7

Delivery Service Rate Case Filing –

Tentative Schedule

•

Delivery

Service

Rate

Case

Filed

–

June

30,

2010

•

Alt

Reg

Proposal

Filed

–

August

/

September

2010

•

Intervenor

and

Rebuttal

Testimony

–

4Q

2010

•

Hearings

–

December

2010

/

January

2011

•

Administrative

Law

Judge

Order

–

February

2011

•

Final

Order

Expected

–

May

2011

•

New

Rates

Effective

–

June

2011

Note:

Dates

are

based

on

typical

approach

to

rate

cases

but

the

Illinois

Commerce

Commission

(ICC)

will

set

the

actual

schedule,

which

is

expected

in

3Q

2010.