Ground Renewable Expeditionary Energy Network System
New lightweight, solar-powered systems are bringing energy to Marines in the field.
The Ground Renewable Expeditionary Energy Network System (GREENS) is powered by the sun. It is a 300-watt, photovoltaic/battery power system that provides continuous power to Marines in the field.
GREENS fills the gap between what a large power generator and a battery can provide. In addition to renewable energy, GREENS also can be combined with generators and vehicle power to provide an intelligent small-scale energy management system. Increased use of renewable energy sources such as GREENS in the battlefield decreases the need for vulnerable fuel convoys and saves lives.
The Naval Surface Warfare Center Carderock Division developed and tested the original GREENS prototype systems. GREENS underwent continuous power testing in 2009-10 in temperatures that exceeded 116 degrees Fahrenheit. Performance exceeded expectations, prompting rapid development and accelerated procurement of the final design by Marine Corps Systems Command.
Beginning in 2011, Composite Technology Development, Inc., under the Navy Small Business Innovation Research program, helped improve the system’s deployability by combining an innovative packable framework array and lightweight, efficient solar technology. The new solar panels reduced panel system weight and volume by as much as 75 percent.
This second-generation Ground Renewable Expeditionary Energy Network System was displayed at a symposium at Marine Corps Base Camp Pendleton, California, in May 2016.
(U.S. Marine Corps photo by Lance Cpl. Caitlin Bevel)