JCPenney saved over 47 million kWh and $5 million with variable frequency drive retrofits of rooftop units across 131 stores. The case study describes the decision process and results of this successful program.
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Presentation at CxEnergy 2014 conference by Hanson, Inc. the commissioning agent for Sandy Grove Middle School. Sandy Grove, in Lumber Bridge, NC, is the first Zero Energy school built with a public-private partnership in the U.S.. Presentation includes technologies used, benefits of Zero Energy, common issues with the technologies they used, and lessons learned.
This 150,000 SF, LEED Gold, Net Zero facility was built on a 17.5 acre site in the city of Irving, Texas. Project cost was $29,610,423, and construction commenced on May 14, 2010. The project opened its doors for school on August 24, 2011. The building is structural steel frame with a brick and metal panel veneer. There are large expanses of windows for daylight harvesting. There are two stories consisting of classrooms, library, cafeteria, auditorium, and gymnasium. The structure fits on a very tight site with building orientation critical to energy conservation; native landscaping and pervious paving round out the exterior. The school uses extensive shading to minimize solar heat gain and incorporates wind turbines as a part of its onsite renewable energy generation portfolio.
Sandy Grove Middle School is designed to be the nation's first leased public school designed as a zero energy & LEED Platinum building. The building incorporates energy efficiency features such as high-efficiency HVAC systems, advanced envelope strategies, LED interior and exterior lighting, and renewable energy generation provided by roof-mounted PV panels. The building was constructed by a public-private partnership: a private company (First Floor K-12) financed and owns the building, while the local school district (Hoke County Schools) leases the school.