Obbligazione Commonwealth Energy Co. 3% ( US202795JS00 ) in USD

Commonwealth Energy Co.

65.16 USD ▼

Stati Uniti

US202795JS00 ( in USD )

3% per anno ( pagato 2 volte l'anno)

28/02/2050

Prospetto opuscolo dell'obbligazione Commonwealth Edison Co US202795JS00 en USD 3%, scadenza 28/02/2050

2 000 USD

350 000 000 USD

202795JS0

A ( Upper medium grade - Investment-grade )

A1 ( Upper medium grade - Investment-grade )

01/03/2026 ( In 19 giorni )

Commonwealth Edison Company, o ComEd, è la principale azienda di servizi energetici dell'Illinois, fornendo elettricità a oltre 4 milioni di clienti.

The Obbligazione issued by Commonwealth Energy Co. ( United States ) , in USD, with the ISIN code US202795JS00, pays a coupon of 3% per year.
The coupons are paid 2 times per year and the Obbligazione maturity is 28/02/2050

The Obbligazione issued by Commonwealth Energy Co. ( United States ) , in USD, with the ISIN code US202795JS00, was rated A1 ( Upper medium grade - Investment-grade ) by Moody's credit rating agency.

The Obbligazione issued by Commonwealth Energy Co. ( United States ) , in USD, with the ISIN code US202795JS00, was rated A ( Upper medium grade - Investment-grade ) by Standard & Poor's ( S&P ) credit rating agency.

424B2 1 exc3723581-424b2.htm PROSPECTUS FILED PURSUANT TO RULE 424(B)(2)
CALCULATION OF REGISTRATION FEE
Maximum
Amount of
Aggregate
Registration
Title of Each Class of Securities to be Registered
Offering Price Fee(1)(2)
Debt Securities
(First Mortgage 2.200% Bonds, Series 128, Due March 1, 2030)
$ 348,936,000
$ 45,291.89
Debt Securities
(First Mortgage 3.000% Bonds, Series 129, Due March 1, 2050)
649,103,000
84,253.57
Total
$ 998,039,000
$129,545.46
____________________
(1)
Calculated in accordance with Rule 457(r) under the Securities Act of 1933, as amended.

(2)
This "Calculation of Registration Fee" table shall be deemed to update the "Calculation of Registration Fee" table in the Registration
Statement on Form S-3 (No. 333-233543-02), filed by Commonwealth Edison Company on August 30, 2019, in accordance with Rules
456(b) and 457(r) under the Securities Act of 1933, as amended.
Filed Pursuant to Rule 424(b)(2)
Registration Statement No. 333-233543-02
PROSPECTUS SUPPLEMENT
(To Prospectus dated August 30, 2019)
$1,000,000,000
Commonwealth Edison Company
$350,000,000 First Mortgage 2.200% Bonds, Series 128 due 2030
$650,000,000 First Mortgage 3.000% Bonds, Series 129 due 2050
____________________
The Series 128 bonds and the Series 129 bonds will bear interest at the rate of 2.200% and 3.000%, respectively, per year. We will pay interest
on the bonds on March 1 and September 1 of each year, beginning on September 1, 2020. The Series 128 bonds and Series 129 bonds will mature
on March 1, 2030 and March 1, 2050, respectively. We refer to the Series 128 bonds and the Series 129 bonds collectively as the bonds.
We may redeem some or all of the bonds at any time at the redemption prices described under "Description of the Bonds and Mortgage
Redemption at Our Option" in this prospectus supplement.
The bonds will be secured equally with all other bonds outstanding or hereafter issued under our Mortgage. There is no sinking fund for the
bonds.
The bonds are a new issue of securities with no established trading market. We do not intend to apply for listing of the bonds on any securities
exchange.
____________________
Please see "Risk Factors" on page S-6 of this prospectus supplement for a discussion of factors you should consider in connection with
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a purchase of the bonds.
Proceeds to ComEd
Price to Public (1) Underwriting Discount Before Expenses (1)
Per Series 128 Bond
99.696%
0.650%
99.046%
Total for Series 128 Bonds
$ 348,936,000
$
2,275,000
$
346,661,000
Per Series 129 Bond
99.862%
0.875%
98.987%
Total for Series 129 Bonds
$ 649,103,000
$
5,687,500
$
643,415,500
____________________
(1) Plus accrued interest from February 25, 2020, if settlement occurs after that date.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the bonds or
determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.
The bonds are expected to be delivered in book-entry only form through the facilities of The Depository Trust Company, including
Clearstream Banking, S.A. and/or Eurostream Bank S.A./N.V., against payment in New York, New York on or about February 25, 2020.
Joint Book-Running Managers
BNP PARIBAS
BofA Securities
Citigroup
MUFG
Credit Agricole CIB
PNC Capital Markets LLC
SMBC Nikko
Senior Co-Managers
Loop Capital Markets
Siebert Williams Shank
Co-Managers
AmeriVet Securities Inc.
Apto Partners, LLC
Huntington Capital Markets Penserra Securities LLC
R. Seelaus & Co., LLC
The date of this prospectus supplement is February 18, 2020.
We urge you to carefully read this prospectus supplement and the accompanying prospectus, which describe the terms of the offering
of the bonds, before you make your investment decision. This prospectus supplement, the accompanying prospectus and any related free
writing prospectus required to be filed with the Securities and Exchange Commission (SEC) that we prepare or authorize contain and
incorporate by reference information that you should consider when making your investment decisions. We have not, and the underwriters
have not, authorized anyone else to provide you with different information. If anyone provides you with different or inconsistent
information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these bonds in any jurisdiction
where the offer or sale is not permitted. You should not assume that the information appearing in this prospectus supplement, the
accompanying prospectus and any related free writing prospectus is accurate as of any date other than the date on the front of those
documents or that the information incorporated by reference is accurate as of any date other than the date that the document
incorporated by reference was filed with the SEC. Our business, financial condition, results of operations and prospects may have changed
since those respective dates.
TABLE OF CONTENTS
Prospectus Supplement
Page
ABOUT THIS PROSPECTUS SUPPLEMENT
S-1
FORWARD-LOOKING STATEMENTS
S-1
COMMONWEALTH EDISON COMPANY
S-3
SUMMARY FINANCIAL INFORMATION
S-3
RISK FACTORS
S-6
USE OF PROCEEDS
S-6
CAPITALIZATION
S-6
DESCRIPTION OF THE BONDS AND MORTGAGE
S-7
MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
S-16
UNDERWRITING
S-20
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LEGAL MATTERS
S-24
EXPERTS
S-24
WHERE YOU CAN FIND MORE INFORMATION
S-24
DOCUMENTS INCORPORATED BY REFERENCE
S-24

Prospectus

Page
ABOUT THIS PROSPECTUS
1
FORWARD-LOOKING STATEMENTS
2
RISK FACTORS
2
EXELON CORPORATION
3
EXELON GENERATION COMPANY, LLC
3
COMMONWEALTH EDISON COMPANY
3
PECO ENERGY COMPANY
3
BALTIMORE GAS AND ELECTRIC COMPANY
3
POTOMAC ELECTRIC POWER COMPANY
4
DELMARVA POWER & LIGHT COMPANY
4
ATLANTIC CITY ELECTRIC COMPANY
4
USE OF PROCEEDS
4
DESCRIPTION OF SECURITIES
4
PLAN OF DISTRIBUTION
5
LEGAL MATTERS
7
EXPERTS
7
WHERE YOU CAN FIND MORE INFORMATION
7
DOCUMENTS INCORPORATED BY REFERENCE
7
S-i
ABOUT THIS PROSPECTUS SUPPLEMENT
This prospectus supplement and the accompanying prospectus contain information about Commonwealth Edison Company and about the
bonds. This prospectus supplement and the accompanying prospectus also refer to information contained in other documents that we file with the
SEC. To the extent the information in this prospectus supplement is inconsistent with information in the accompanying prospectus, you should rely
on this prospectus supplement.
Notice to Prospective Investors in the European Economic Area and the United Kingdom
This prospectus supplement and the accompanying prospectus are not prospectuses for the purposes of the Prospectus Regulation (as defined
herein). This prospectus supplement and the accompanying prospectus have been prepared on the basis that any offer of bonds in any Member
State of the European Economic Area (the "EEA") or in the United Kingdom (each, a "Relevant State") will only be made to a legal entity that is a
qualified investor under the Prospectus Regulation ("Qualified Investors"). Accordingly, any person making or intending to make an offer in that
Relevant State of bonds that are the subject of the offering contemplated in this prospectus supplement and the accompanying prospectus may only
do so with respect to Qualified Investors. Neither Commonwealth Edison Company nor the underwriters have authorized, nor do they authorize,
the making of any offer of bonds other than to Qualified Investors. The expression "Prospectus Regulation" means Regulation (EU) 2017/1129.
PROHIBITION OF SALES TO EEA AND UK RETAIL INVESTORS The bonds are not intended to be offered, sold or otherwise made
available to and should not be offered, sold or otherwise made available to any retail investor in the EEA or in the United Kingdom. For these
purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive
2014/65/EU, as amended ("MiFID II"); or (ii) a customer within the meaning of Directive (EU) 2016/97 (the "Insurance Distribution Directive"),
where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as
defined in the Prospectus Regulation. Consequently, no key information document required by Regulation (EU) No 1286/2014, as amended (the
"PRIIPs Regulation") for offering or selling the bonds or otherwise making them available to retail investors in the EEA or in the United Kingdom
has been prepared and therefore offering or selling the bonds or otherwise making them available to any retail investor in the EEA or in the United
Kingdom may be unlawful under the PRIIPs Regulation.
Notice to Prospective Investors in the United Kingdom
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The communication of this prospectus supplement, the accompanying prospectus and any other document or materials relating to the issue of
the bonds offered hereby is not being made, and such documents and/or materials have not been approved, by an authorized person for the
purposes of section 21 of the United Kingdom's Financial Services and Markets Act 2000, as amended (the "FSMA"). Accordingly, such
documents and/or materials are not being distributed to, and must not be passed on to, the general public in the United Kingdom. The
communication of such documents and/or materials as a financial promotion is only being made to those persons in the United Kingdom who have
professional experience in matters relating to investments and who fall within the definition of investment professionals (as defined in Article
19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Financial Promotion Order")), or who
fall within Article 49(2)(a) to (d) of the Financial Promotion Order, or who are any other persons to whom it may otherwise lawfully be made
under the Financial Promotion Order (all such persons together being referred to as "relevant persons"). In the United Kingdom, the bonds offered
hereby are only available to, and any investment or investment activity to which this prospectus supplement and the accompanying prospectus
relate will be engaged in only with, relevant persons. Any person in the United Kingdom that is not a relevant person should not act or rely on this
prospectus supplement or the accompanying prospectus or any of their contents.
The accompanying prospectus also includes information about Exelon Corporation (Exelon) and our affiliates Exelon Generation Company,
LLC (Generation), PECO Energy Company (PECO), Baltimore Gas and Electric Company (BGE), Potomac Electric Power Company (Pepco),
Delmarva Power & Light Company (DPL) and Atlantic City Electric Company (ACE) and their securities, which does not apply to us or the
bonds. Commonwealth Edison Company is a subsidiary of Exelon. The bonds are solely our obligations and not obligations of Exelon or of any of
our affiliates.
Unless the context otherwise indicates, when we refer to "ComEd," "the Company," "we," "our" or "us" in this prospectus supplement, we
mean Commonwealth Edison Company and unless the context otherwise indicates, does not include any of our subsidiaries or affiliates.
FORWARD-LOOKING STATEMENTS
Certain of the matters discussed in this prospectus supplement, the accompanying prospectus and the documents incorporated or deemed
incorporated by reference as described under the heading "Where You Can Find More Information" are 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 the forward-looking statements include: (a) any risk
S-1
factors discussed in this prospectus supplement and the accompanying prospectus; (b) those factors discussed in the following sections of ComEd's
2019 Annual Report on Form 10-K: ITEM 1A. Risk Factors, ITEM 7. Management's Discussion and Analysis of Financial Condition and Results
of Operations and ITEM 8. Financial Statements and Supplementary Data: Note 18; and (c) other factors discussed herein and in other filings with
the SEC by ComEd, as applicable. You are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the
date on the front of this prospectus supplement or, as the case may be, as of the date on which we make any subsequent forward-looking statement
that is deemed incorporated by reference. We do not undertake any obligation to update or revise any forward-looking statement to reflect events
or circumstances after the date as of which any such forward-looking statement is made.
S-2
COMMONWEALTH EDISON COMPANY
ComEd is engaged principally in the purchase and regulated retail sale of electricity and the provision of distribution and transmission services
to a diverse base of residential, commercial and industrial customers in northern Illinois. ComEd is a public utility under the Illinois Public
Utilities Act subject to regulation by the Illinois Commerce Commission (ICC) related to distribution rates and service, the issuance of securities
and certain other aspects of ComEd's business. ComEd is a public utility under the Federal Power Act subject to regulation by the Federal Energy
Regulatory Commission (FERC) related to transmission rates and certain other aspects of ComEd's business. Specific operations of ComEd are
also subject to the jurisdiction of various other Federal, state, regional and local agencies. Additionally, ComEd is subject to mandatory reliability
standards set by the North American Electric Reliability Corporation (NERC).
ComEd's retail service territory has an area of approximately 11,400 square miles and an estimated population of 9.6 million. The service
territory includes the City of Chicago, an area of about 225 square miles with an estimated population of 2.7 million. ComEd has approximately
4.1 million customers.
ComEd was organized in the State of Illinois in 1913 as a result of the merger of Cosmopolitan Electric Company into the original corporation
named Commonwealth Edison Company, which was incorporated in 1907. ComEd's principal executive offices are located at 440 South LaSalle
Street, Suite 3300, Chicago, Illinois 60605, and its telephone number is 312-394-4321.
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SUMMARY FINANCIAL INFORMATION
We have provided the following summary financial information for your reference. We have derived the summary information presented here
from the financial statements we have incorporated by reference into this prospectus supplement and the accompanying prospectus. You should
read the summary information together with our historical consolidated financial statements and the related notes incorporated by reference in this
prospectus supplement and the accompanying prospectus. See "Where You Can Find More Information" in this prospectus supplement.
Year Ended December 31,

2019

2018

2017
($ in millions)
Income Statement Data
Operating revenues
$ 5,747
$
5,882
$ 5,536
Operating income
1,171
1,146
1,323
Net income
688
664
567

Cash Flow Data
Cash interest paid, net of amount capitalized
$
343
$
332
$
307
Capital expenditures (a)
(1,915)
(2,126)
(2,250)
Net cash flows provided by operating activities
1,703
1,749
1,527
Net cash flows used in investing activities
(1,886)
(2,097)
(2,230)
Net cash flows provided by financing activities
256
534
789

As of December 31,
2019
2018
2017
($ in millions)
Balance Sheet Data
Property, plant and equipment, net
$
23,107
$
22,058
$
20,723
Regulatory assets, including current portion
1,761
1,600
1,279
Goodwill
2,625
2,625
2,625
Total assets
32,765
31,213
29,726
Regulatory liabilities, including current portion
6,742
6,343
6,577
Long-term debt, including debt due within one year
8,491
8,101
7,601
Long-term debt to financing trust
205
205
205
Total liabilities
22,088
20,966
20,184
Total shareholders' equity
10,677
10,247
9,542
____________________
(a) These amounts include investment in plant and plant removals, net.
S-3
Notes to Summary Financial Information
Several of our more significant rate-related matters are summarized below:
? Energy Distribution Formula Rate.

Pursuant to the Illinois Energy Infrastructure Modernization Act and the Illinois Future Energy Jobs Act (FEJA), our electric distribution
rates are established through a performance-based formula, which sunsets at the end of 2022. We are required to file an annual update to our
electric distribution formula rate on or before May 1st, with resulting rates effective in January of the following year. Our annual electric
distribution formula rate update is based on prior year actual costs and current year projected capital additions (initial year revenue
requirement). The update also reconciles any differences between the revenue requirement in effect for the prior year and actual costs
incurred from the year (annual reconciliation).
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Our approved revenue requirement for 2018 reflected a decrease of $58 million for the initial year revenue requirement for 2018 and an
increase of $34 million related to the annual reconciliation for 2017. The revenue requirement for 2018 and the annual reconciliation for
2017 provided for a weighted average debt and equity return on distribution rate base of 6.52% inclusive of an allowed ROE of 8.69%,
reflecting the average rate on 30-year treasury notes plus 580 basis points.
Our approved revenue requirement for 2019 reflected an increase of $51 million for the initial year revenue requirement for 2019 and a
decrease of $68 million related to the annual reconciliation for 2018. The revenue requirement for 2019 and the annual reconciliation for
2018 provided for a weighted average debt and equity return on distribution rate base of 6.51% inclusive of an allowed ROE of 8.91%,
reflecting the average rate on 30-year treasury notes plus 580 basis points.
During the first quarter of 2018, we revised our electric distribution formula rate to implement revenue decoupling provisions provided for
under FEJA. As a result of this revision, our electric distribution formula rate revenues are not impacted by abnormal weather, usage per
customer or numbers of customers. We began reflecting the impacts of this change in our operating revenues and electric distribution
formula rate regulatory asset in the first quarter of 2017.

? Cumulative Persisting Annual Energy Efficiency Megawatt-hour (MWh) Savings Goals.

FEJA allows us to defer energy efficiency costs (except for any voltage optimization costs which are recovered through our electric
distribution formula rate) as a separate regulatory asset that is recovered through an energy efficiency formula rate over the weighted
average useful life, as approved by the ICC, of the related energy efficiency measures. We earn a return on the energy efficiency regulatory
asset at a rate equal to our weighted average cost of capital, which is based on a year-end capital structure and calculated using the same
methodology applicable to our electric distribution formula rate. Beginning January 1, 2018 through December 31, 2030, the return on
equity that we earn on our energy efficiency regulatory asset is subject to a maximum downward or upward adjustment of 200 basis points if
our cumulative persisting annual MWh savings falls short of or exceeds specified percentage benchmarks of our annual incremental savings
goal. We are required to file an update to our energy efficiency formula rate on or before June 1st each year, with resulting rates effective in
January of the following year. The annual update is based on projected current year energy efficiency costs, PJM capacity revenues, and the
projected year-end regulatory asset balance less any related deferred income taxes (initial year revenue requirement). The update also
reconciles any differences between the revenue requirement in effect for the prior year and actual costs incurred from the year (annual
reconciliation). The approved energy efficiency formula rate also provides for revenue decoupling provisions similar to those in our electric
distribution formula rate.
On November 26, 2019, the ICC approved our energy efficiency formula rate update, which became effective on January 1, 2020 and
reflected an increase of $50 million in our revenue requirement. The approved revenue requirement reflected an increase of $53 million for
the initial revenue requirement for 2020 and a decrease of $3 million related to the annual reconciliation for 2018. The revenue requirement
for 2020 provides for a weighted average debt and equity return on the energy efficiency regulatory asset and rate base of 6.51% inclusive of
an allowed ROE of 8.91%, reflecting the average rate on 30-year treasury notes plus 580 basis points.
For the energy efficiency formula, we record a regulatory asset or liability and corresponding increase or decrease to operating revenues for
any differences between the revenue requirement in effect and our best estimate of the revenue requirement expected to be approved by the
ICC for that year's reconciliation. For the other rate riders established under FEJA, we record a regulatory asset or liability for any
differences between revenues and incurred expenses.

? Transmission Formula Rate

Our transmission rates are established based on a FERC-approved formula. We are required to file an annual update to the FERC-approved
formula on or before May 15, with the resulting rates effective on June 1 of the same year. The annual formula rate update is based on prior
year actual costs and current year projected capital additions (initial year revenue
S-4
requirement). The update also reconciles any differences between the revenue requirement in effect beginning June 1 of the prior year and
actual costs incurred for that year (annual reconciliation).
We filed our annual transmission formula rate update for 2019, which reflected an increase of $21 million for the initial revenue
requirement for 2019 and a decrease of $16 million related to the annual reconciliation for 2018. The revenue requirement for 2019 and the
annual reconciliation for 2018 provides for a weighted average debt and equity return on transmission rate base of 8.21% inclusive of an
allowed ROE of 11.50%. As part of the FERC-approved settlement of our 2007 transmission rate case, the rate of return on common equity
is 11.50%, inclusive of a 50-basis-point incentive adder for being a member of a regional transmission organization, and the common equity
component of the ratio used to calculate the weighted average debt and equity return for the transmission formula rate is currently capped at
55%. The updated transmission rate is effective June 2019.
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? Grand Jury Subpoenas and other Government Requests for Information.

Exelon and ComEd received a grand jury subpoena in the second quarter of 2019 from the U.S. Attorney's Office for the Northern District
of Illinois requiring production of information concerning their lobbying activities in the State of Illinois. On October 4, 2019, Exelon and
ComEd received a second grand jury subpoena from the U.S. Attorney's Office for the Northern District of Illinois requiring production of
records of any communications with certain individuals and entities. On October 22, 2019, the SEC notified Exelon and ComEd that it has
also opened an investigation into their lobbying activities. Exelon and ComEd have cooperated fully and intend to continue to cooperate
fully and expeditiously with the U.S. Attorney's Office and the SEC. Exelon and ComEd cannot predict the outcome of the U.S. Attorney's
Office or the SEC investigations, which could subject Exelon and ComEd to criminal or civil penalties, sanctions or other remedial
measures. Any of the foregoing, as well as the appearance of non-compliance with anti-corruption and anti-bribery laws, could have an
adverse impact on Exelon's and ComEd's reputation or relationship with regulatory and legislative authorities, customers and other
stakeholders, as well as their consolidated financial statements. No loss contingency has been reflected in Exelon's and ComEd's
consolidated financial statements as this contingency is neither probable nor reasonably estimable at this time. Management is currently
unable to estimate a range of reasonably possible loss as the matters undergoing investigation are subject to change.
Subsequent to Exelon announcing the receipt of the subpoenas, a putative class action lawsuit has been filed against Exelon and certain
officers of Exelon and ComEd alleging misrepresentations or omissions by Exelon purporting to relate to matters that are the subject of the
subpoenas and the SEC investigation. Exelon believes that these claims lack merit and intends to defend against them, and though the costs
or any loss associated with the lawsuit cannot be reasonably estimated at this time, Exelon does not believe that the lawsuit will have a
material adverse impact on Exelon's or ComEd's financial statements.
See Notes 3 and 18 of the Combined Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended
December 31, 2019 for additional information regarding the matters discussed above and other regulatory proceedings.
S-5
RISK FACTORS
Your investment in the bonds will involve certain risks. You should carefully consider the following discussion and the risks described under
"Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2019, incorporated by reference in this prospectus
supplement and the accompanying prospectus, the factors listed under "Forward-Looking Statements" in this prospectus supplement and the other
information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus before making a decision to
invest in the bonds. See "Where You Can Find More Information" in this prospectus supplement.
There is no assurance that a public market will develop for the bonds.
The bonds are a new issue of securities with no established trading market. We do not intend to apply for listing of the bonds on any securities
exchange. We can give no assurances concerning the liquidity of any market that may develop for the bonds offered hereby, the ability of any
investor to sell any of the bonds, or the price at which investors would be able to sell them. If a market for the bonds does not develop, investors
may be unable to resell the bonds for an extended period of time, if at all. If a market for the bonds does develop, it may not continue or it may not
be sufficiently liquid to allow holders to resell any of their bonds. Consequently, investors may not be able to liquidate their investments readily,
and lenders may not readily accept the bonds as collateral for loans.
USE OF PROCEEDS
We expect to receive net proceeds from the issuance and sale of the bonds of approximately $985,676,500, after deducting the underwriting
discount and other estimated fees and expenses payable by us. We intend to use the net proceeds to repay outstanding commercial paper obligations
and for general corporate purposes. As of February 13, 2020, we had $292 million of outstanding commercial paper obligations, which had a
maturity of one day and a weighted average annual interest rate of 1.70%. If we do not use the net proceeds immediately, we may temporarily
invest them in short-term, interest-bearing obligations.
CAPITALIZATION
The following table sets forth our consolidated capitalization as of December 31, 2019, and as adjusted to give effect to the issuance and sale
of the bonds and the application of the net proceeds from this offering as set forth under "Use of Proceeds" in this prospectus supplement. This
table is qualified in its entirety by, and should be considered in conjunction with, the more detailed information incorporated by reference or
provided in this prospectus supplement or in the accompanying prospectus.
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As of December 31, 2019
Actual
As Adjusted
($ in millions)
(unaudited)
Commercial Paper (a)
$
130
$
--
Long-term debt:
First Mortgage Bonds, including $500 million of current maturities
8,491
9,491
Long-term debt to financing trust
205
205
Other long-term debt (b)
(19)
(27)
Total shareholders' equity
10,677
10,677
Total capitalization, including short-term borrowings and $500 million of current maturities
$
19,484
$
20,346
____________________
(a) As described under "Use of Proceeds" above, we had $292 million of outstanding commercial paper as of February 13, 2020, all of which will
be retired using the proceeds from the bonds.

(b) Includes $(35) million of unamortized debt discount.
S-6
DESCRIPTION OF THE BONDS AND MORTGAGE
The bonds will be issued under our Mortgage dated July 1, 1923 (Mortgage), as amended and supplemented and as further supplemented by a
supplemental indenture creating the bonds. The bonds will bear interest at the rates per annum and will be due and payable on the dates set forth on
the cover page of this prospectus supplement. We are issuing the bonds on the basis of net property additions. See "Property Additions/Bondable
Bond Retirements" below for the meaning of the term "net property additions."
We refer to this Mortgage in this prospectus supplement as the "Mortgage" and to BNY Mellon Trust Company of Illinois as the "Mortgage
Trustee." The terms "lien of Mortgage," "mortgage date of acquisition," "permitted lien," "prior lien," "prior lien bonds," "property additions,"
"bondable bond retirements," and "utilized under the Mortgage" are used in this prospectus supplement with the meanings given to those terms in
the Mortgage.
The Mortgage contains provisions under which substantially all of the properties of our electric utility subsidiary, Commonwealth Edison
Company of Indiana, Inc., or the Indiana Company, might be subjected to the lien of the Mortgage, if we should so determine, as additional
security for our bonds, whereupon that subsidiary would become a "mortgaged subsidiary," as defined in the Mortgage. Since we have not as yet
made any determination as to causing the Indiana Company to become a mortgaged subsidiary, those provisions of the Mortgage that are
summarized below that discuss a mortgaged subsidiary as well as us, relate to us only.
We have summarized selected provisions of the Mortgage below. However, because this summary is not complete, it is subject to and is
qualified in its entirety by reference to the Mortgage. We suggest that you read the complete text of the Mortgage, a copy of which we have
incorporated by reference as an exhibit to the registration statement of which this prospectus supplement and the accompanying prospectus are a
part.
Securities Offered
The Series 128 bonds and the Series 129 bonds will initially be limited in aggregate principal amount to $350,000,000 and $650,000,000,
respectively. Subject to the limitations described in this prospectus supplement, we may issue additional mortgage bonds under our Mortgage with
the same priority as the bonds offered by this prospectus supplement, including mortgage bonds having the same series designation and terms
(except for the public offering price, the issue date and, if applicable, the first interest payment date) as the bonds offered by this prospectus
supplement, without the approval of the holders of the outstanding mortgage bonds issued under our Mortgage, including the bonds offered by this
prospectus supplement. The bonds will be secured equally with all other bonds outstanding or hereafter issued under our Mortgage.
Principal, Maturity and Interest
The Series 128 bonds and the Series 129 bonds will initially be limited in aggregate principal amount to $350,000,000 and $650,000,000,
respectively. The bonds will be issued in book-entry form only in minimum denominations of $2,000 and integral multiples of $1,000 in excess
thereof.
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The Series 128 bonds and the Series 129 bonds will mature on March 1, 2030 and March 1, 2050, respectively. Interest will be payable on the
bonds semi-annually on March 1 and September 1 of each year, beginning on September 1, 2020, until the principal is paid or made available for
payment. Interest on the bonds will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date
of issuance. Payment of interest on the bonds will be made to the person in whose name those bonds are registered at the close of business on the
record date for the relevant interest payment date, which shall be February 15 and August 15 for the interest payment dates on March 1 and
September 1, respectively. Default interest will be paid in the same manner to holders as of a special record date established in accordance with the
Mortgage.
Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. If any date on which interest is payable on the
bonds is not a business day, then payment of the interest payable on that date will be made on the next succeeding day which is a business day (and
without any interest or other payment in respect of any delay), with the same force and effect as if made on such date.
For so long as the bonds are issued in book-entry form, payments of principal and interest will be made in immediately available funds by wire
transfer to DTC or its nominee. If the bonds are issued in certificated form to a holder other than DTC, payments of principal and interest will be
made by check mailed to that holder at that holder's registered address. Payment of principal of the bonds in certificated form will be made against
surrender of those bonds at the office or agency of our company in the City of Chicago, Illinois and an office or agency in the Borough of
Manhattan, City of New York, New York.
S-7
Redemption at Our Option
At any time prior to December 1, 2029 (three months prior to the maturity date of the Series 128 bonds), or prior to September 1, 2049 (six
month prior to the maturity date of the Series 129 bonds), we may, at our option, redeem the bonds in whole or in part at any time at a redemption
price equal to the greater of:
? 100% of the principal amount of the bonds to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, or

? as determined by the Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest on the
bonds to be redeemed that would be due if such bonds matured on December 1, 2029, in the case of the Series 128 bonds, or September 1,
2049, in the case of the Series 129 bonds, but for the redemption (not including any portion of payments of interest accrued as of the
redemption date) discounted to the redemption date on a semi-annual basis at the Adjusted Treasury Rate plus 12.5 basis points, in the case
of the Series 128 bonds, or 15 basis points, in the case of the Series 129 bonds, plus in each case accrued and unpaid interest to the
redemption date.
At any time on or after December 1, 2029 (three months prior to the maturity date of the Series 128 bonds), or on and after September 1, 2049
(six month prior to the maturity date of the Series 129 bonds), we may, at our option, redeem the bonds in whole or in part at any time at a
redemption price equal to 100% of the principal amount of those bonds to be redeemed, plus accrued and unpaid interest to, but excluding, the
redemption date.
The redemption price will be calculated assuming a 360-day year consisting of twelve 30-day months.
We will send notice of any redemption at least 30 days, but not more than 45 days before the redemption date to each registered holder of the
bonds to be redeemed.
Unless we default in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the bonds or portions
of the bonds called for redemption.
"Adjusted Treasury Rate" means, with respect to any redemption date, the rate per year equal to the semi-annual equivalent yield to maturity
of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to
the Comparable Treasury Price for the redemption date.
"Business Day" means any day that is not a day on which banking institutions in New York City are authorized or required by law or regulation
to close.
"Comparable Treasury Issue" means the United States Treasury security selected by the Quotation Agent as having a maturity comparable to
the remaining term of the Series 128 bonds or Series 129 bonds, as applicable, to be redeemed (assuming, for this purpose, that the Series 128
bonds matured on December 1, 2029, and the Series 129 bonds matured on September 1, 2049) that would be used, at the time of selection and in
accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of
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those bonds.
"Comparable Treasury Price" means, with respect to any redemption date:
? the average of the Reference Treasury Dealer Quotations for that redemption date, after excluding the highest and lowest of the Reference
Treasury Dealer Quotations; or

? if the Quotation Agent obtains fewer than three Reference Treasury Dealer Quotations, the average of all Reference Treasury Dealer
Quotations so received.
"Quotation Agent" means the Reference Treasury Dealer appointed by us.
"Reference Treasury Dealer" means (1) each of (a) BNP Paribas Securities Corp., (b) BofA Securities, Inc., (c) Citigroup Global Markets Inc.
and (d) a Primary Treasury Dealer selected by MUFG Securities Americas Inc., and in each case their respective successors and affiliates, unless
any of them ceases to be a primary U.S. Government securities dealer in the United States of America ("Primary Treasury Dealer"), in which case
the Company shall substitute another Primary Treasury Dealer; and (2) any other Primary Treasury Dealer selected by the Company.
"Reference Treasury Dealer Quotations" means, with respect to each Reference Treasury Dealer and any redemption date, the average, as
determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its
principal amount) quoted in writing to the Quotation Agent by that Reference Treasury Dealer at 3:30 p.m., New York City time, on the third
Business Day preceding that redemption date.
S-8
Book-Entry System
We will issue each series of bonds in the form of one or more global bonds in fully registered form initially in the name of Cede & Co., as
nominee of DTC, or such other name as may be requested by an authorized representative of DTC. The global bonds will be deposited with DTC
and may not be transferred except as a whole by DTC to a nominee of DTC or by a nominee of DTC to DTC or another nominee of DTC or by
DTC or any nominee to a successor of DTC or a nominee of such successor.
DTC, the world's largest securities depository, is a limited-purpose trust company organized under the New York Banking Law, a "banking
organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the
meaning of the New York Uniform Commercial Code, and a "clearing agency" registered pursuant to the provisions of Section 17A of the
Securities Exchange Act of 1934, as amended (Exchange Act). DTC holds and provides asset servicing for (over 3.5 million issues of) U.S. and
non-U.S. equity, corporate and municipal debt issues, and money market instruments (from over 100 countries) that DTC's participants (direct
participants) deposit with DTC. DTC also facilitates the post-trade settlement among direct participants of sales and other securities transactions in
deposited securities through electronic computerized book-entry transfers and pledges between direct participants' accounts. This eliminates the
need for physical movement of securities certificates. Direct participants include both U.S. and non-U.S. securities brokers and dealers, banks,
trust companies, clearing corporations, and certain other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing
Corporation (DTCC). DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation,
all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available
to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, and clearing corporations that clear through or
maintain a custodial relationship with a direct participant, either directly or indirectly (indirect participants). The rules applicable to DTC and its
direct and indirect participants are on file with the SEC. More information about DTC can be found at www.dtcc.com. We do not intend this
internet address to be an active link or to otherwise incorporate the content of the website into this prospectus supplement.
Clearstream advises that it is incorporated under the laws of Luxembourg as a bank. Clearstream holds securities for its customers and
facilitates the clearance and settlement of securities transactions between its customers through electronic book-entry transfers between their
accounts. Clearstream provides to its customers among other things, services for safekeeping, administration, clearance and settlement of
internationally traded securities and securities lending and borrowing. Clearstream interfaces with domestic securities markets in over 30 countries
through established depository and custodial relationships. As a bank, Clearstream is subject to regulation by the Luxembourg Commission for the
Supervision of the Financial Sector, also known as the Commission de Surveillance du Secteur Financier. Its customers are recognized financial
institutions around the world, including underwriters, securities brokers and dealers, banks, trust companies, clearing corporations and certain other
organizations. Its customers in the United States are limited to securities brokers and dealers and banks. Indirect access to Clearstream is also
available to other institutions such as banks, brokers, dealers and trust companies that clear through or maintain a custodial relationship with the
customer.
Euroclear advises that it was created in 1968 to hold securities for its participants and to clear and settle transactions between Euroclear
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