Atlantic Power Corporation Announces Closing of Public Offering of Extendible Convertible Unsecured Subordinated Debentures on a

Atlantic Power Corporation Announces Closing of Public Offering of Extendible 
Convertible Unsecured Subordinated Debentures on a Bought Deal Basis 
BOSTON, Dec. 11, 2012 /CNW/ - Atlantic Power Corporation (NYSE: AT) (TSX: ATP) 
(the "Company" or "Atlantic Power") announced today the closing of its 
underwritten public offering, on a bought deal basis, in each of the provinces 
and territories of Canada, except the Province of Quebec (the "Offering"), of 
C$100 million aggregate principal amount of series D extendible convertible 
unsecured subordinated debentures (the "Debentures") at a public offering 
price of C$1,000 per Debenture. 
The Company intends to use the net proceeds from the Offering to fund the 
acquisition of all of the outstanding shares of capital stock of Ridgeline 
Energy Holdings, Inc. (the "Acquisition") and to fund certain working capital 
commitments and acquisition expenses related to Ridgeline Energy Holdings, Inc. 
The Debentures will have an initial maturity date of March 31, 2013 which will 
automatically be extended to December 31, 2019 upon the closing of the 
Acquisition. If the Acquisition does not close by March 31, 2013 (the "Initial 
Maturity Date") or is earlier terminated, the Company will be required to 
repay the Debentures within three business days of the Initial Maturity Date. 
The Debentures will bear interest at a rate of 6.00% per year, and will be 
convertible into common shares of the Company ("Common Shares") at an initial 
conversion price of C$14.50 per Common Share, being a ratio of approximately 
68.9655 Common Shares per C$1,000 principal amount of Debentures (subject to 
customary adjustments). The Company received net proceeds from the Offering, 
after deducting the underwriting fee and expenses related to the Offering, of 
approximately C$95.5 million. TD Securities and BMO Capital Markets acted as 
joint bookrunners with respect to the Offering. 
The Debentures were distributed pursuant to a prospectus supplement dated 
December 3, 2012 to the Company's short form base shelf prospectus dated 
August 17, 2012 in each of the provinces and territories of Canada, other than 
the Province of Quebec, and pursuant to a shelf registration statement on Form 
S-3 filed with the United States Securities and Exchange Commission (the 
"SEC") and related prospectus supplement. A copy of the Canadian prospectus 
supplement and accompanying short form base shelf prospectus relating to the 
Offering may be obtained upon request by contacting TD Securities Inc., Attn: 
Symcor, NPM (Email:, Tel: (289) 360-2009) or BMO Capital 
Markets, Attn: Mississauga Distribution Centre C/O The Data Group of Companies 
(Email:, Tel: (905) 696-8884 x4222); and a copy of the 
U.S. prospectus supplement relating to the offering of Debentures may be 
obtained upon request from TD Securities (USA) LLC, Attn: David Chepauskas (31 
West 52nd St., New York, NY 10019, Tel: (212) 827-7392) or BMO Capital 
Markets, Attn: Equity Syndicate (3 Times Square, 27th Floor, New York, NY 
10036, Tel: (800) 414-3627, Email: 
About Atlantic Power 
Atlantic Power is a leading publicly traded, power generation and 
infrastructure company with a well-diversified portfolio of assets in the 
United States and Canada. The Company's power generation projects sell 
electricity to utilities and other large commercial customers under long-term 
power purchase agreements, which seek to minimize exposure to changes in 
commodity prices. The net generating capacity of the Company's projects is 
approximately 2,117 MW, consisting of interests in 30 operational power 
generation projects across 11 states and 2 provinces and also an 84-mile, 500 
kilovolt electric transmission line located in California. In addition, the 
Company has an approximately 300 MW wind project under construction in 
Oklahoma, which is expected to achieve commercial operation later this year 
and a 53 MW biomass project under construction in Georgia, which is expected 
to achieve commercial operation in the first quarter of 2013. Atlantic Power 
also owns a majority interest in Rollcast Energy, a biomass power plant 
developer in Charlotte, NC. Atlantic Power is incorporated in British 
Columbia, headquartered in Boston and has offices in Chicago, Toronto, 
Vancouver and San Diego. 
The Company's corporate strategy is to increase the value of the Company 
through accretive acquisitions in North American markets while generating 
stable, contracted cash flows from its existing assets to sustain its dividend 
payout to shareholders. The Company's dividend is currently paid monthly at an 
annual rate of Cdn$1.15 per share. 
Atlantic Power has a market capitalization of approximately $1.3 billion and 
trades on the New York Stock Exchange under the symbol AT and on the Toronto 
Stock Exchange under the symbol ATP. For more information, please visit the 
Company's website at or contact: 
Atlantic Power Corporation Amanda Wagemaker, Investor Relations (617) 977-2700 
Forward-Looking Statements 
This news release may include "forward-looking statements" within the meaning 
of the U.S. federal securities laws and "forward-looking information", as such 
term is used in Canadian securities laws (referred to as "forward-looking 
statements"). These forward-looking statements can generally be identified by 
the use of the words "outlook," "objective," "may," "will," "should," "could," 
"would," "plan," "potential," "estimate," "project," "continue," "believe," 
"intend," "anticipate," "expect," "target" or the negatives of these words and 
phrases or similar expressions that are predictions of or indicate future 
events or trends and which do not relate solely to present or historical 
matters. In particular, Atlantic Power's intentions regarding the use of the 
proceeds from the Offering as described above constitute forward-looking 
statements. Forward-looking statements reflect Atlantic Power's current 
expectations regarding future events and speak only as of the date of this 
news release. These forward-looking statements are based on a number of 
assumptions which may prove to be incorrect. The intended use of proceeds from 
the Offering may change from that described herein. The completion of the 
Acquisition is subject to, among other things, customary closing conditions, 
including payment of the total consideration and the receipt of all necessary 
regulatory approvals. Forward-looking statements involve significant risks and 
uncertainties, should not be read as guarantees of future performance or 
results, and will not necessarily be accurate indications of whether or not or 
the times at or by which such performance or results will be achieved. A 
number of factors could cause actual results to differ materially from the 
results discussed in the forward-looking statements, including, but not 
limited to, the factors discussed under "Risk factors" in the filings Atlantic 
Power makes from time to time with the SEC and Canadian securities regulators 
and as set forth in the Canadian and U.S. prospectus supplements and 
accompanying prospectuses. Atlantic Power's business is both competitive and 
subject to various risks. Although the forward-looking statements contained in 
this news release are based upon what Atlantic Power believes to be reasonable 
assumptions, investors cannot be assured that actual results will be 
consistent with these forward-looking statements, and the differences may be 
material. Therefore, investors are urged not to place undue reliance on 
Atlantic Power's forward-looking statements. These forward-looking statements 
are made as of the date of this news release and, except as expressly required 
by applicable law, Atlantic Power assumes no obligation to update or revise 
them to reflect new events or circumstances. 
PRN Photo Desk, 
SOURCE: Atlantic Power Corporation 
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CO: Atlantic Power Corporation
ST: Massachusetts
-0- Dec/11/2012 13:57 GMT
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