CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the reference to our firm under the caption "Experts" and to the use of our report dated April 30, 2009 (except for Note 2 as to which the date is September 18, 2009 and the adoption of Accounting Standards Codification 810, Consolidation, and related disclosure in Note 3 as to which the date is December 22, 2009) in Amendment No. 3 to the Registration Statement (Form S-1 No. 333-152671) and related Prospectus of First Wind Holdings Inc. dated February 5, 2010.
/s/Ernst & Young LLP
Boston, Massachusetts
February 5, 2010
