Lempster Wind Farm

East Lempster, New Hampshire

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Iberdrola Renewables / Avangrid

Project Type

Wind Power


Clough Harbor & Associates
Keene, NH

Start / Finish

December 2007 - September 2008

Description / Significance

This project included construction of 5 1/2 miles of access roadway and 12 turbine pads.  Steep terrain at high elevations and access to the job site were the most difficult challenges associated with the project.

This wind farm has the capacity to produce 24 megawatts of electricity from (12) 2-megawatt turbines. The project included 200,000 yards of excavation, 25,000 feet of electrical trenching, earthwork for an operations and maintenance building, and an additional pad for a meteorological tower.  Crews had to crush 50,000 yards of gravel, and install 2,500 feet of reinforced concrete pipe was used for cross culverts along the roadway.