AT Atlantic Power Corporation

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):  February 3, 2015

ATLANTIC POWER CORPORATION

(Exact name of registrant as specified in its charter)

(617) 977-2400

(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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 5.02.                                        Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

(b)  Departure of Certain Officers

On February 3, 2015, Atlantic Power Corporation (the “Company”) and Edward Hall, the Company’s Executive Vice President — Chief Operating Officer, reached a mutual agreement for Mr. Hall’s departure from the Company effective February 3, 2015.

The Company expects to enter into a separation agreement with Mr. Hall once the terms of such agreement are finalized and will file a Current Report on Form 8-K to report any additional information required by Item 5.02 of Form 8-K within four business days after such information is determined or becomes available.

Item 7.01.                                        Regulation FD Disclosure.

On February 3, 2015, the Company issued a press release, which is attached hereto as Exhibit 99.1.

The information in this Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that Section, nor shall such information be deemed to be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in that filing.

Item 9.01.                                        Financial Statements and Exhibits.

(d)  Exhibits

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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.

EXHIBIT INDEX

3

Exhibit 99.1

Atlantic Power Corporation Announces the Departure of Edward Hall

BOSTON, MASSACHUSETTS, February 3, 2015 /PRNewswire/ — Atlantic Power Corporation (NYSE: AT) (TSX: ATP) (“Atlantic Power” or the “Company”) today announced the departure from the Company of its Chief Operating Officer, Ned Hall.  “We thank Ned for his service and wish him well as he moves forward in his outstanding career,” said Jim Moore, the Company’s CEO.  “We will not replace the COO position. We have named our VP of Asset Management, Dan Rorabaugh, as the Senior Vice President of Asset Management,” said Moore.  He also noted, “Dan has a wealth of experience including senior executive positions at leading independent power companies and we are lucky to have him leading our power plant operations.”

About Atlantic Power

Atlantic Power owns and operates a diverse fleet of power generation assets in the United States and Canada.  Atlantic Power’s power generation projects sell electricity to utilities and other large commercial customers largely under long-term power purchase agreements, which seek to minimize exposure to changes in commodity prices.  Its power generation projects have an aggregate gross electric generation capacity of approximately 2,945 MW in which its aggregate ownership interest is approximately 2,024 MW.  Its current portfolio consists of interests in twenty-eight operational power generation projects across eleven states in the United States and two provinces in Canada.

Atlantic Power 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 www.atlanticpower.com or contact:  Atlantic Power Corporation, Amanda Wagemaker, Investor Relations (617) 977-2700, info@atlanticpower.com.  Copies of financial data and other publicly filed documents are filed on SEDAR at www.sedar.com or on EDGAR at www.sec.gov/edgar.shtml under “Atlantic Power” or on Atlantic Power’s website.