
Maine’s largest geothermal installation began this week at the Portland International Jetport, funded through a $2.5 million grant from the Federal Aviation Administration.
The project is scheduled to be completed in October 2010 and be operational in July 2011. The company behind the project is Norfolk Ram Group LLC, a Plymouth-based environmental engineering firm.
The airport estimates that its oil consumption will be reduced by more than 100,000 gallons per year, reducing energy costs by an estimated 80 percent. The project ultimately will save more than $10 million in oil usage costs during the life of the system, and will pay for itself in three years, according to the airport.
The installation will consist of a total of 120 boreholes, 500 feet deep, adding up to more than 60,000-feet of ground loop coil. The Voluntary Airport Low Emissions program of the FAA is funding the project.
The installation is part of a $75 million terminal expansion project at the airport.
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