The Holy Cross Project Visitor Center has 28 PV panels (Evergreen ES-190W), which produce 190 watts of electricity each, for a total of 5.3 Kilowatts. The modules cover 458 sq. ft. of the metal roof. The Holy Cross Project system does not have a battery; it feeds directly into the power grid via the inverter (Xantrex GT5). The Visitor Center is 87% more energy-efficient than the average home, as a result the solar system is able to produce 100% of the energy used in the home.
More about the Holy Cross Project: We built five LEED Platinum homes, all with solar power systems, and we will soon begin construction on a community center, followed by a multi-family housing unit. The Visitor Center is regularly open to the public for tours on Mondays and Fridays 11:00-4:00 and Saturdays 10:00-1:00.