However, built into the concept of ZNE is that it is inherently a measure of net energy used over the course of a year, with specific definitions differing on the energy unit measured and whether the calculation is done at the site or the source. [...] In 2011, AEC launched a Verification & Assessment Study of the Ramble apartments to assess the ZNE performance of 24 apartment units and gather energy end-use data in the categories of HVAC, plug loads and lights, and appliances. [...] ©2014 ACEEE Summer Study on Energy Efficiency in Buildings 7-114 This paper is a story about the performance of West Village, in particular the role of resident behavior in the life of a building. [...] The target behaviors in the pledge were selected based on the results of the pilot and anecdotal observation. [...] Lastly, West Village, as a case study, provides feedback to the ZNE community on the feasibility of achieving the state’s goals technically and the role of occupant behavior.