<Li> The Putney School's net zero Field House was opened October 10, 2009 . In use for over a year, as of December 2010, the Field House used 48,374 kWh and produced a total of 51,371 kWh during the first 12 months of operation, thus performing at slightly better than net - zero . Also in December, the building won an AIA - Vermont Honor Award . </Li> <Li> The Charlotte Vermont House designed by Pill - Maharam Architects is a verified net zero energy house completed in 2007 . The project won the Northeast Sustainable Energy Association's Net Zero Energy award in 2009 . </Li>

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