The following management's discussion and analysis of financial condition and
results of operations should be read in conjunction with the interim condensed
consolidated financial statements and the related notes thereto included
elsewhere in this Quarterly Report on Form 10-Q. All dollar amounts discussed
below are in millions of U.S. dollars, unless otherwise stated. The interim
financial statements have been prepared in accordance with accounting principles
generally accepted in the United States of America ("GAAP") and in accordance
with the instructions to Form 10-Q related to smaller reporting companies as
promulgated by the SEC. This Item 2 was prepared without regards to potential
effects of the Transaction, except where stated otherwise.



OVERVIEW


Atlantic Power is an independent power producer that owns power generation
assets in eleven states in the United States and two provinces in Canada. Our
power generation projects, which are diversified by geography, fuel type,
dispatch profile and offtaker, sell electricity to utilities and other large
customers predominantly under long-term PPAs, which seek to minimize exposure to
changes in commodity prices. As of March 31, 2021, our portfolio consisted of
twenty-one operating projects with an aggregate electric generating capacity of
approximately 1,723 megawatts ("MW") on a gross ownership basis and
approximately 1,327 MW on a net ownership basis. Sixteen of the projects are
majority-owned by the Company.



We sell the majority of the capacity and energy from our power generation
projects under PPAs to a variety of utilities and other parties. Under the PPAs,
we receive payments for electric energy sold to our customers (known as energy
payments), in addition to payments for electric generation capacity (known as
capacity payments). Our PPAs have expiration dates ranging from September 2021
(Kenilworth) to November 2043 (Allendale). We also sell steam from a number of
our projects to industrial purchasers under steam sales agreements. Sales of
electricity are generally higher during the summer and winter months, when
temperature extremes create demand for either summer cooling or winter heating.



We directly operate and maintain sixteen of our operating power generation projects. We also partner with recognized leaders in the independent power industry to operate and maintain our other projects. Under these operation, maintenance and management agreements, the operator is typically responsible for operations, maintenance and repair services.





Available Information



Access to our Quarterly Reports on Form 10-Q, Annual Reports on Form 10-K,
Current Reports on Form 8-K, and amendments to these reports filed with or
furnished to the Securities and Exchange Commission ("SEC") pursuant to Section
13(a) or 15(d) of the Exchange Act may be obtained free of charge through the
Investors section of our website at
https://investors.atlanticpower.com/corporate-profile as soon as is reasonably
practical after we electronically file or furnish these reports. In addition,
our filings with the SEC may be accessed through the SEC's website at
www.sec.gov and our filings with the Canadian Securities Administrators ("CSA")
may be accessed through the CSA's System for Electronic Document Analysis and
Retrieval ("SEDAR") at www.sedar.com. Except for the documents specifically
incorporated by reference into this Form 10-Q, information contained on our
website or the SEC or CSA websites is not incorporated by reference in the Form
10-Q and should not be considered to be a part of the Form 10-Q. We have
included our website address and that of the SEC and CSA only as inactive
textual references and do not intend them to be active links to such websites.
All statements made in any of our securities filings, including all
forward-looking statements or information, are made as of the date of the
document in which the statement is included, and we do not

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assume or undertake any obligation to update any of those statements or documents unless we are required to do so by applicable law. We are not a foreign private issuer, as defined in Rule 3b-4 under the Exchange Act.





RECENT DEVELOPMENTS


Proposed Transaction with I Squared Capital





On January 14, 2021, Atlantic Power announced that it had entered into a
definitive agreement (as amended on April 1, 2021 and April 29, 2021, and as may
be further amended from time to time, the "Arrangement Agreement") with certain
affiliates of infrastructure funds managed by I Squared Capital Advisors (US)
LLC ("I Squared Capital"), a leading global infrastructure investor (the
"Purchasers"), under which the Company's outstanding common shares and 6.00%
Series E convertible unsecured subordinated debentures due January 31, 2025
("Convertible Debentures"), and the outstanding preferred shares and medium term
notes of certain of its subsidiaries, would be acquired (the "Transaction"). The
total enterprise value of the deal is approximately $961 million and the
Transaction was unanimously approved by Atlantic Power's board of directors. The
parties are currently targeting May 14, 2021 as the closing date for the
Transaction.



In connection with the Transaction, and subject to and conditional to the closing of the Transaction:

? Holders of common shares of Atlantic Power will receive $3.03 per common share

in cash.

Atlantic Power Preferred Equity Ltd.'s ("APPEL's") cumulative redeemable

? preferred shares, Series 1, cumulative rate reset preferred shares, Series 2,

and cumulative floating rate preferred shares, Series 3, will be purchased by

APPEL for Cdn$22.00 per preferred share in cash.

Atlantic Power Limited Partnership's ("APLP's") 5.95% medium term notes due

June 23, 2036 (the "MTNs") will be redeemed for consideration equal to 106.071%

of the principal amount of MTNs held as of the closing of the Transaction, plus

accrued and unpaid interest on the MTNs up to, but excluding, the closing date

? of the Transaction. Holders of MTNs that have delivered a valid consent to the

proposed amendments to the trust indenture governing the MTNs (as described

below) prior to 5:00 p.m. (Toronto time) on March 16, 2021 will also entitled

to a consent fee equal to 0.25% of the principal amount of MTNs held by such

holders in respect of which a consent was delivered, conditional on closing of

the Transaction.

Holders of Atlantic Power's Convertible Debentures who deliver a conversion

notice prior to 4:00 p.m. (Toronto time) on May 11, 2021 (the "Conversion

Deadline") will receive $3.03 per common share issuable on conversion of the

Convertible Debentures in respect of which such conversion notice has been

? delivered (including common shares issuable on account of the Make Whole

Premium (as defined in the Arrangement Agreement), plus accrued and unpaid

interest up to, but excluding, the date of conversion, and all other

Convertible Debentures will be defeased in accordance with the terms of the


   trust indenture governing the Convertible Debentures (the "Debenture
   Indenture") (as described below)




The Arrangement Agreement was amended on April 1, 2021 to provide for certain
administrative and housekeeping amendments to the Arrangement Agreement and to,
among other things, clarify the mechanics surrounding the payment of
consideration payable pursuant to the Transaction. The amendments also added a
step to the Arrangement to, among other things, provide for the creation of a
class of non-voting preferred shares in connection with the Pre-Acquisition
Reorganization (as defined in the Arrangement Agreement). The creation and
issuance of any such shares will not occur until immediately prior to the
effective time of the Arrangement and will only occur if the Purchasers have
irrevocably waived or confirmed in writing the satisfaction of all conditions to
closing in their favor and shall have confirmed in writing that they are
prepared, and able, to promptly and without condition proceed to effect the
Arrangement (as defined in the Arrangement Agreement).



The Arrangement Agreement was further amended on April 29, 2021 to provide for
mutual covenants in connection with the proposed defeasance of the Convertible
Debentures (the "Defeasance"), clarify the mechanics surrounding the payment of
the amounts required to effect the Defeasance, and effect a waiver of certain
conditions precedent in the Arrangement Agreement relating to the approval of
the Transaction by holders of the Convertible Debentures. Notwithstanding the
Defeasance, any holder of Convertible Debentures who converts their Convertible
Debentures during the period beginning 10 trading days (as defined in the
Debenture Indenture) prior to the closing of the Transaction ("Closing") and
ending 30 calendar days following the delivery of the change of control notice
under the Indenture (the "Make Whole Conversion Period") will be entitled to
receive the Make Whole Premium. Assuming that

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the Closing occurs on May 14, 2021 and the change of control notice is delivered
on Closing as is currently anticipated, the Make Whole Conversion Period opened
on April 30, 2021 and will close on June 14, 2021.



In connection with the Defeasance, and if Closing occurs (i) Atlantic Power
expects to de-list its Convertible Debentures from the TSX and its common shares
from the TSX and the NYSE; (ii) Atlantic Power intends to apply to Canadian
securities regulators to cease being a reporting issuer, or to be exempt from
its reporting obligations as a Canadian reporting issuer, and also intends to
file to deregister under the U.S. Securities Exchange Act of 1934; (iii) the
Convertible Debentures will no longer be convertible into common shares and, if
converted after the Conversion Deadline, holders will be entitled to receive a
cash amount equal to Cdn$3.72 in lieu of each Common Share previously issuable
on a conversion (including any common shares otherwise issuable on account of
the Make Whole Premium if converted within the Make Whole Conversion Period),
plus accrued and unpaid interest paid in Canadian dollars up to, but excluding,
the date of conversion; and (iv) except as otherwise provided in the Debenture
Indenture, any Convertible Debentures which remain outstanding following the
expiry of the Make Whole Conversion Period will continue to receive interest at
a rate of 6.00% per annum, payable semi-annually in arrears until, and the
repayment of principal upon, the redemption of the Convertible Debentures.
Following the Defeasance, the Convertible Debentures will be redeemed at par on
January 31, 2023.



The Transaction has received approval from the holders of common shares of the
Company and the holders of preferred shares and medium term notes of certain of
the Company's subsidiaries. The Transaction also has received certain required
regulatory approvals, including an advance ruling certificate from the Canadian
Commissioner of Competition under the Competition Act (Canada) on February 5,
2021, the expiration of the required waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976 on March 9, 2021, the approval of the Federal
Energy Regulatory Commission on April 2, 2021 and the approval in April 2021
from the Federal Communications Commission ("FCC") for the transfer of control
of certain FCC licenses held by the Company or its subsidiaries.



The Transaction remains subject to the satisfaction or waiver of certain third-party consents, and other customary closing conditions.





Oxnard PPA Agreement



On March 31, 2021, we executed an agreement to sell Resource Adequacy (RA)
capacity from the Oxnard plant effective January 1, 2022 through December 31,
2023. Capacity provided under the agreement will be used to satisfy the load
obligations of a community choice aggregator. Under the RA
agreement, Oxnard will receive a fixed monthly capacity payment. The RA
agreement also provides the opportunity for the plant to receive revenue from
the potential sale of energy and ancillary services as well as other
non-capacity revenues.



Sale of North Bay and Kapuskasing





Our North Bay and Kapuskasing projects are each 40 MW natural gas plants located
in the Province of Ontario. These plants are currently being maintained, but do
not operate because they do not have PPAs or a merchant market where operations
would be profitable. On February 23, 2021, we entered into an agreement with SNS
Power Corp. to sell our properties in the City of North Bay, the District of
Nipissing and in Kapuskasing, Ontario for Cdn$3.0 million in cash. We determined
the North Bay and Kapuskasing asset groups met the criteria for held for sale
accounting as of March 31, 2021. See Note 2 - Assets and Liabilities Held for
Sale. We currently expect the sale of the plants to be completed in the second
quarter of 2021 subject to customary due diligence procedures.



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OUR POWER PROJECTS



The table below outlines our portfolio of power generating assets in operation
as of May 6, 2021, including our interest in each facility. Management believes
the portfolio is well diversified in terms of electricity and steam buyers, fuel
type, regulatory jurisdictions and regional power pools, thereby partially
mitigating exposure to market, regulatory or environmental conditions specific
to any single region. Our customers are generally large utilities and other
parties with investment-grade credit ratings, as measured by Standard & Poor's
("S&P"). For customers rated by Moody's, we substitute the corresponding S&P
rating in the table below. Customers that have assigned ratings at the top end
of the range of investment-grade have, in the opinion of the rating agency, the
strongest capability for payment of debt or payment of claims, while customers
at the lower end of the range of investment-grade have weaker capacity. Agency
ratings are subject to change, and there can be no assurance that a rating
agency will continue to rate the customers, and/or maintain their current
ratings. A security rating may be subject to revision or withdrawal at any time
by the rating agency, and each rating should be evaluated independently of any
other rating. We cannot predict the effect that a change in the ratings of the
customers will have on their liquidity or their ability to pay their debts or
other obligations.





                                                                  Economic                                                                                   Customer Credit
       Project             Location         Type         MW       Interest     Net MW           Primary Electric Purchasers           Power Contract

Expiry    Rating (S&P)

Solid Fuel Segment
                            South
Allendale                  Carolina        Biomass        20      100.00 % 

20 South Carolina Public Service Authority November 2043


          A (1)
Cadillac                   Michigan        Biomass        40      100.00 %        40                 Consumers Energy                       June 2028               A-
Calstock                   Ontario         Biomass        35      100.00 %        35     Ontario Electricity Financial Corporation      December 2021 (2)        AA- (1)
Chambers(3)               New Jersey        Coal         262       40.00 %        89            Atlantic City Electric (4)                  March 2024              A-
                                                                                  16                   Chemours Co.                         March 2024              B+
                            North
Craven(3)                  Carolina        Biomass        48       50.00 %        24            Duke Energy Carolinas, LLC                December 2027            BBB+
                            South
Dorchester                 Carolina        Biomass        20      100.00 % 

20 South Carolina Public Service Authority October 2043


          A (1)
Grayling(3)                Michigan        Biomass        37       30.00 %        11                 Consumers Energy                     December 2027             A-
Piedmont                   Georgia         Biomass        55      100.00 %        55                   Georgia Power                      September 2032            A-
                           British
Williams Lake              Columbia        Biomass        66      100.00 %        66                     BC Hydro                         September 2029         AAA (1)

Natural Gas Segment
Frederickson(3)           Washington     Natural Gas     250       50.15 %        50                  Benton Co. PUD                       August 2022           AA- (1)
                                                                                  45                 Grays Harbor PUD                      August 2022            A+ (1)
                                                                                  30                 Franklin Co. PUD                      August 2022            A+ (1)
Kenilworth                New Jersey     Natural Gas      29      100.00 %        29                 Merck & Co., Inc.                    September 2021           AA-
                                                                                                         Merchant                              N/A                  NR
Manchief (5)               Colorado      Natural Gas     300      100.00 %       300        Public Service Company of Colorado              April 2022              A-
Morris (6)                 Illinois      Natural Gas     177      100.00 %       100                     Merchant                              N/A                  NR
                                                                                  77            Equistar Chemicals, LP (7)                December 2034          BBB- (8)
Nipigon                    Ontario       Natural Gas      40      100.00 % 

40 Independent Electricity System Operator December 2022


         AA- (1)
Orlando(3)                 Florida       Natural Gas     129       50.00 %        65             Duke Energy Florida, LLC                 December 2023            BBB+
Oxnard                    California     Natural Gas      49      100.00 % 

49 California Independent System Operator December 2023 (9)

           A+
Tunis                      Ontario       Natural Gas      37      100.00 % 

37 Independent Electricity System Operator October 2033

AA- (1)



Hydroelectric Segment
Curtis Palmer              New York         Hydro         60      100.00 %        60         Niagara Mohawk Power Corporation           December 2027 (10)         BBB+
Koma Kulshan              Washington        Hydro         13      100.00 %        13                Puget Sound Energy                      March 2037             BBB
                           British
Mamquam(11)                Columbia         Hydro         50      100.00 %        50                     BC Hydro                         September 2027         AAA (1)
                           British
Moresby Lake               Columbia         Hydro          6      100.00 %         6                     BC Hydro                          August 2022           AAA (1)

(1) Customer is rated by Moody's but not S&P; therefore, the rating shown in the


    table is the S&P rating that corresponds to the actual Moody's rating.



(2) In May 2020, the PPA with the Ontario Electricity Financial Corporation for

Calstock, which had been scheduled to expire in June 2020, was extended to

December 16, 2020 under existing terms. In December 2020, the Calstock PPA

was extended for one year, also under existing terms, and runs to December


    16, 2021.



(3) Unconsolidated entities for which the results of operations are reflected in


    equity earnings of unconsolidated


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 affiliates.



(4) The base PPA with Atlantic City Electric ("ACE") makes up the majority of the

revenue from the 89 Net MW. For sales of energy and capacity not purchased by

ACE under the base PPA and sold to the spot market, profits are shared with


    ACE under a separate power sales agreement.



(5) In May 2019, we entered into an agreement to sell Manchief to PSCo following

the expiration of the PPA in April 2022 for $45.2 million subject to working


    capital and other customary adjustments.



(6) Equistar has an option to purchase Morris that is exercisable in December


    2027.



(7) Equistar has the right under the PPA to take up to 77 MW, but on average has


    taken approximately 50 MW.



(8) Represents the credit rating of LyondellBasell, the parent company of


    Equistar, as Equistar is not rated.



(9) On August 28, 2020, we executed an agreement to sell RA capacity from the

Oxnard plant effective January 1, 2021 through to December 31, 2021. On March

31, 2021, we executed a new agreement to sell capacity from the Oxnard plant

for an additional two years, effective January 1, 2022 through December 31,


    2023.



(10) The Curtis Palmer PPA expires at the earlier of December 2027 or the

provision of 10,000 GWh of generation. From January 6, 1995 through March

31, 2021, the facility has generated 8,420 GWh under its PPA. Based on

cumulative generation to date and assuming average water conditions going


     forward, we expect the PPA to expire in the first quarter of 2026.



(11) BC Hydro has an option to purchase Mamquam that is exercisable in November


     2021 and every five-year anniversary thereafter.



Non-operating Natural Gas Plants





In August 2018, we terminated discussions with the Navy regarding site control
for our Naval Station, Naval Training Center ("NTC") and North Island projects
located in San Diego, California. We are in the process of decommissioning all
three sites, which is a requirement of our land use agreements with the Navy. We
anticipate decommissioning will be completed in the second quarter of 2021.



Our Kapuskasing and North Bay projects are both 40 MW natural gas plants located
in the Province of Ontario. These plants are currently being maintained, but do
not operate because they do not have PPAs or a merchant market where operations
would be profitable. On February 23, 2021, we entered into an agreement with SNS
Power Corp. to sell our properties in City of North Bay, District of Nipissing
and in Kapuskasing, Ontario for Cdn$3.0 million in cash. We determined the North
Bay and Kapuskasing asset groups met the criteria for held for sale accounting
as of March 31, 2021. See Note 2 - Assets and Liabilities Held for Sale. We
currently expect the sale of the plants to be completed in the second quarter of
2021 subject to customary due diligence procedures.







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  Table of Contents

Consolidated Overview and Results of Operations





Performance highlights



The following table provides a summary of our consolidated results of operations
for the three months ended March 31, 2021 and 2020, which are analyzed in
greater detail below:





                                                                   Three months ended
                                                                       March 31,

(in millions of U.S. dollars, except as otherwise stated)           2021   

     2020

Project revenue                                                  $     72.0    $   72.8
Project income                                                         32.4        24.7

Net (loss) income attributable to Atlantic Power Corporation (0.1)

29.5


Net cash provided by operating activities                               8.4

8.4


Net cash provided by (used in) investing activities                     0.2

(2.6)


Net cash used in financing activities                                (26.0)

(40.1)


(Loss) earnings per share attributable to Atlantic Power
Corporation-basic                                                    (0.00)

0.28


(Loss) earnings per share attributable to Atlantic Power
Corporation-diluted                                                  (0.00)        0.23
Project Adjusted EBITDA(1)                                             48.2        50.8

(1) See reconciliation and definition in Supplementary Non-GAAP Financial


    Information.



Project revenue decreased by $0.8 million to $72.0 million in the three months ended March 31, 2021 from $72.8 million in the three months ended March 31, 2020. The primary drivers of the decrease are as follows:

? Curtis Palmer - lower water flows resulted in a $5.5 million decrease in


   revenue; and



? Dorchester -a maintenance outage in March 2021 resulted in a $0.7 million


   decrease in revenue.



These decreases in project revenue were partially offset by increases in project revenue resulting from:

Cadillac - the project ceased operation after the fire at the project in

? September 2019. The project resumed operations on August 20, 2020 resulting in

a $2.9 million increase in energy and capacity revenue in the current period;

? Morris - a $1.4 million increase in project revenue due to higher fuel prices


   than in 2020; and




? Williams Lake - a $0.9 million increase in revenue primarily due to increased


   generation and the impact of foreign currency translation adjustments.




Consolidated project income increased by $7.7 million to $32.4 million in the
three months ended March 31, 2021 from $24.7 million in the three months ended
March 31, 2020. The primary drivers of the increase are as follows:



? Derivative instruments - the change in the fair value of our derivative

instruments increased $8.8 million from the comparable 2020 period.

The increase in project income was partially offset by a decrease in project income resulting from:

? Project revenue - project revenue decreased $0.8 million as discussed above.






A detailed discussion of project income by segment is provided in Consolidated
Overview and Results of Operations below. The discussion of Project Adjusted
EBITDA by segment begins on page 46.



We have four reportable segments: Solid Fuel, Natural Gas, Hydroelectric and
Corporate. Project income is the primary GAAP measure of our operating results
and is discussed below by reportable segment.

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Three months ended March 31, 2021 compared to the three months ended March 31, 2020

The following table provides our consolidated results of operations:






                                                            Three months ended March 31,
                                                      2021        2020      $ change     % change
Project revenue:
Energy sales                                         $  36.0    $   40.7    $   (4.7)      (11.5) %
Energy capacity revenue                                 29.8        28.0          1.8         6.4 %
Other                                                    6.2         4.1          2.1        51.2 %
                                                        72.0        72.8        (0.8)       (1.1) %
Project expenses:
Fuel                                                    20.7        19.6          1.1         5.6 %
Operations and maintenance                              21.1        20.7          0.4         1.9 %
Depreciation and amortization                           14.3        15.6        (1.3)       (8.3) %
                                                        56.1        55.9          0.2         0.4 %
Project other income (expense):
Change in fair value of derivative instruments           3.2       (5.6)          8.8          NM
Equity in earnings of unconsolidated affiliates         13.4        13.7   

    (0.3)       (2.2) %
Interest expense, net                                  (0.3)       (0.3)            -           -
Other income, net                                        0.2           -          0.2          NM
                                                        16.5         7.8          8.7          NM
Project income                                          32.4        24.7          7.7        31.2 %
Administrative and other expenses:
Administration                                          14.1         6.7          7.4          NM
Interest expense, net                                   11.4        10.8          0.6         5.6 %
Foreign exchange loss (gain)                             3.2      (20.6)         23.8          NM
Other (income) expense, net                            (0.1)         2.6   

(2.7) NM


                                                        28.6       (0.5)         29.1          NM
Income from operations before income taxes               3.8        25.2   

   (21.4)      (84.9) %
Income tax expense                                       2.2         1.5          0.7        46.7 %
Net income                                               1.6        23.7       (22.1)      (93.2) %
Net income (loss) attributable to preferred
shares of a subsidiary company                           1.7       (5.8)          7.5          NM
Net (loss) income attributable to Atlantic Power
Corporation                                          $ (0.1)    $   29.5

$ (29.6) NM

(1) NM is defined as "not meaningful" and includes changes greater than 100%







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