Demand for solar energy is heating up across the United States, and the nation's military is becoming one of the sector's major customers. The Department of Defense wants renewable energy to make up at least one quarter of its total energy use by 2025, and solar energy is squarely within its sights.   

The Military just recently began construction of a solar power plant at Fort Huachuca in Arizona, where solar panels will be installed over 68 acres, constituting the largest solar array of any military base in the U.S. According to the commanding general of the base, Maj. Gen. Robert Ashley, the project reflects the military's commitment to energy security. 

Whether it be engaged in disaster relief, humanitarian missions or in military operations, the military needs reliable energy that is "off the grid," since public electrical utilities are vulnerable to adverse weather conditions and potential sabotage. The military also needs to be ready for possible disruptions to the oil supply, which could cripple it and the nation's economy.  

Such risks to national security are turning the armed forces into a vast laboratory for the development of solar technology and the creation of "net-zero" environments, where energy consumption equals the energy created on-site. The military already used solar arrays at fixed-site locations in Afghanistan.  

By moving to solar power, the military could also avoid the high costs of transporting gasoline to remote areas of the world.  In the past, moving gasoline to bases in Afghanistan could cost up to $400 per gallon.