Pattern Energy Group, which owns and operates eight wind power projects in the US, Canada and Chile, filed on Friday with the SEC to raise up to $345 million in an initial public offering. The San Francisco, CA-based company, which was founded in 2009 and booked $154 million in sales for the 12 months ended June 30, 2013, has yet to announce a ticker or an exchange, and is planning on dual listing in both the US and Canada. Pattern Energy Group initially filed confidentially on November 13, 2012. BMO Capital Markets, RBC Capital Markets and Morgan Stanley are the joint bookrunners on the deal. No pricing terms were disclosed.