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Field Demonstrations of Energy Efficient Technologies Conducted by NREL for the U.S. Navy Yielding Valuable Results in Hawaii and Guam

Photo of a Navy ship off the coast of Hawaii

A two-year project between the National Renewable Energy Laboratory (NREL) and the U.S. Navy's Naval Facilities Engineering Command to demonstrate energy efficiency technologies at bases in Hawaii and Guam resulted in the identification of several promising options for reducing energy use and costs. The projects validate the performance of energy improvement technologies such as advanced plug load controls, whole-house energy efficient retrofits, and energy management systems, and provide credible performance data to help guide energy-related decisions.

One example that is yielding valuable results is whole-house energy efficiency retrofits in military housing on Naval Base Guam. The retrofit technologies—including heat pump water heaters and high-efficiency air conditioners coupled with programmable thermostats and low-flow shower heads—showed promising cost and energy savings, with an estimated annual savings of 4,000 kilowatt-hours (kWh) in air-conditioning use and 1,400 kWh in water heating use per home. As a result of the findings, Naval Base Guam has made heat pump water heaters and high-efficiency air conditioners the new equipment standard.

The NREL-Navy collaboration began in August 2011 as part of a project focused on identifying underutilized commercial technologies that could help meet the Navy's ambitious energy goals of producing at least 50% of shore-based energy from alternative sources. In addition, reducing energy costs, decreasing reliance on foreign oil and increasing energy security is part of the DOD mission.

Additional Information

Learn more about NREL's Department of Defense Energy Programs.