U.S. Marine Corps Air Ground Combat Center (MCAGCC) in California implemented several energy saving projects. This includes a 7.2 MW dual-fueled cogeneration plant that produces electricity and heat and saves around $5.8 million a year, returning construction costs within four years. Secondly, the Center installed a 1.2 MW photovoltaic solar array which is expected to reduce energy costs by saving $1.1 million a year. Finally, the base upgraded heating, cooling and lighting systems, reducing maintenance calls from 400 a month to an average of two a week. Read more here.