The Environmental Protection Agency honored two Department of Defense facilities for achieving emissions reductions and energy savings with their combined heat and power systems at the 25th Annual IDEA Campus Energy Conference in Arlington, Va. Here are the details.

The Marine Corps Air Ground Combat Center in Twentynine Palms, California, US maintains its electricity and thermal energy needs with a solar combustion turbine generator that produces up to 7.5 MW of electricity and utilizes turbine exhaust to produce hot water that provides heat and domestic hot water to its many buildings.

The system allows the center to use 24 per cent less fuel than a conventional energy supply system and to avoid about 19,700 metric tons of CO2 emissions each year.

Annual energy costs from the use of the cogeneration plant are reduced by $5.8m the EPA reported.

In addition, the base is currently developing a micro-grid that will allow it to maintain power even in the case of grid outages.

At the 82nd Airborne Division Combined Heat and Power Plant at Fort Bragg, North Carolina, 18 per cent less fuel is consumed than a conventional energy supply system, the EPA reports.

The system used is avoiding emissions equal to that from the electricity of more than 1,500 homes each year and is saving the base about $1 million annually.

Powered by a 5 MW combustion turbine-generator, the system produces 27,000 pounds of steam each hour, which is used to provide heat and hot water to 10,000 soldiers, their families, and civilian base employees. An absorption chiller is also utilized, supplying cold water for air conditioning.

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