<Li> The first 5,000 - square - foot (460 m) zero - energy design home was built in 1979 with support from President Carter's new United States Department of Energy . It relied heavily on passive solar building design for space heat, water heat and space cooling . It heated and cooled itself effectively in a climate where the summer peak temperature was 110 degrees Fahrenheit, and the winter low temperature was − 10 F. It did not use active solar systems . It is a double envelope house that uses a gravity - fed natural convection air flow design to circulate passive solar heat from 1,000 square feet (93 m) of south - facing glass on its greenhouse through a thermal buffer zone in the winter . A swimming pool in the greenhouse provided thermal mass for winter heat storage . In the summer, air from two 24 - inch (610 mm) 100 - foot - long (30 m) underground earth tubes is used to cool the thermal buffer zone and exhaust heat through 7200 cfm of outer - envelope roof vents . </Li> <Dl> <Dt> Oregon </Dt> </Dl> <Ul> <Li> Net Zero Energy Building Certification launched in 2011, with an international following . The first project, Painters Hall, is Pringle Creek's Community Center, café, office, art gallery, and event venue . Originally built in the 1930s, Painters Hall was renovated to LEED Platinum Net Zero energy building standards in 2010, demonstrating the potential of converting existing building stock into high ‐ performance, sustainable building sites . Painters Hall features simple low - ‐ cost solutions for energy reduction, such as natural daylighting and passive cooling lighting, that save money and increase comfort . A district ground - source geothermal loop serves the building's GSHP for highly efficient heating and air conditioning . Excess generation from the 20.2 kW rooftop solar array offsets pumping for the neighborhoods geo loop system . Open to the public, Painters Hall is a hub for gatherings of friends, neighbors, and visitors at the heart of a neighborhood designed around nature and community . </Li> </Ul> <Li> Net Zero Energy Building Certification launched in 2011, with an international following . The first project, Painters Hall, is Pringle Creek's Community Center, café, office, art gallery, and event venue . Originally built in the 1930s, Painters Hall was renovated to LEED Platinum Net Zero energy building standards in 2010, demonstrating the potential of converting existing building stock into high ‐ performance, sustainable building sites . Painters Hall features simple low - ‐ cost solutions for energy reduction, such as natural daylighting and passive cooling lighting, that save money and increase comfort . A district ground - source geothermal loop serves the building's GSHP for highly efficient heating and air conditioning . Excess generation from the 20.2 kW rooftop solar array offsets pumping for the neighborhoods geo loop system . Open to the public, Painters Hall is a hub for gatherings of friends, neighbors, and visitors at the heart of a neighborhood designed around nature and community . </Li>

What should an organization do to allow itself to use the term zero carbon