Wind energy company First Wind has signed an agreement with New Brunswick Power to sell all of the energy produced by its Mars Hill wind farm in Maine, US.

This four-year deal replaces a power purchase ageement (PPA) set to expire in December 2011.

The prior PPA entailed the electricity being sold to New Brunswick Power and then to ISO-New England.

The 42MW Mars Hill energy project, which was commissioned in March 2007, features 28 wind turbines each with a generating capacity of 1.5MW.

First Wind currently owns and operates three wind energy projects in Maine – the Mars Hill project and the 57MW Stetson Wind I and 26MW Stetson Wind II projects.