Pattern Energy Announces Closing of Public Offering

SAN FRANCISCO, CALIFORNIA--(Marketwired - May 14, 2014) - Pattern Energy Group Inc. (the "Company" or "Pattern Energy") (NASDAQ:PEGI)(TSX:PEG) today announced that it has closed the previously announced underwritten public offering of its Class A common stock. In total, 21,117,171 shares of its Class A common stock were sold, including 2,754,413 shares upon exercise in full of the underwriters' over-allotment option, at a price of US$27.75 per share, for total gross proceeds of US$586 million.

The Company sold 10,810,810 shares of Class A common stock for total gross proceeds of US$300 million and the selling shareholder, Pattern Energy Group LP (the "Selling Shareholder" or "Pattern Development"), sold 10,306,361 shares of Class A common stock for total gross proceeds of US$286 million.

The Company intends to use the proceeds of its portion of the offering for working capital and general corporate purposes, including the acquisition of the Panhandle 1 wind power project from Pattern Development and potentially including certain other wind power projects.

The offering was sold through an underwriting group led by BMO Capital Markets, Morgan Stanley & Co. LLC and RBC Capital Markets.

A registration statement relating to these securities has been filed with and declared effective by the Securities and Exchange Commission. The offering was made in Canada under a supplement to the Company's base shelf prospectus filed with Canadian securities regulatory authorities. Copies of the final prospectus and/or Canadian base shelf prospectus and supplement relating to the offering may be obtained from BMO Capital Markets, Attn: Equity Syndicate Department, 3 Times Square, New York, NY 10036, or by telephone at (800) 414-3627 or by email at bmoprospectus@bmo.com; Morgan Stanley & Co. LLC, Attn: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, or by telephone at (866) 718-1649 or by email at prospectus@morganstanley.com; or RBC Capital Markets, LLC, Three World Financial Center, 200 Vesey Street, 8th Floor, New York, NY 10281, Attn: Equity Syndicate, or by telephone at (877) 822-4089 or by email at syndicateops@rbccm.com.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor will there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Pattern Energy

Pattern Energy Group Inc. is an independent power company listed on the NASDAQ and Toronto Stock Exchange, including the pending acquisitions of the Panhandle 1 and Panhandle 2 projects, which the company has agreed to acquire from Pattern Energy Group LP, Pattern Energy owns interests in eleven wind power projects located in the United States, Canada and Chile that use proven, best-in-class technology and have a total owned capacity of 1,434 MW. Pattern Energy's wind power projects generate stable long-term cash flows in attractive markets and provide a solid foundation for the continued growth of the business.

Cautionary Statement Concerning Forward-Looking Statements

Certain statements contained in this press release constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and "forward-looking information" within the meaning of Canadian securities laws, including statements regarding the proposed public offering, acquisitions and use of proceeds. These forward-looking statements represent the Company's expectations or beliefs concerning future events, and it is possible that the results described in this press release will not be achieved. These forward-looking statements are subject to risks, uncertainties and other factors, many of which are outside of the Company's control, which could cause actual results to differ materially from the results discussed in the forward-looking statements.

Any forward-looking statement speaks only as of the date on which it is made, and, except as required by law, the Company does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. New factors emerge from time to time, and it is not possible for the Company to predict all such factors. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in the prospectus filed with the SEC and applicable Canadian securities regulatory authorities and incorporated by reference therein from the Company's annual report on Form 10-K. The risk factors and other factors noted in the prospectus could cause actual events or the Company's actual results to differ materially from those contained in any forward-looking statement.