This session will look how cities and states are using stretch codes to more rapidly transform local building stock to higher energy efficiency levels, sometimes even driving toward zero energy outcomes. Stretch codes are emerging as a go-to policy lever for cities such as Boulder, Santa Monica, Vancouver, BC, Palo Alto, Washington, DC and states such as New York, Massachusetts and Vermont. Presenters will set the stage for how jurisdictions are using stretch codes to accelerate changing practice and describe options developed for a 20% and 40% (better than ASHRAE 90.1-2015) model stretch code. Attendees will hear from jurisdictions planning for and implementing stretch codes and learn about zEPI Jurisdictional Scores, which will be the basis next year (2018) for the ACEEE State Energy Efficiency Scorecards. The zEPI Jurisdictional Scores are a new metric for ranking cities or entire states based on their adopted energy policy, and taking into account statewide energy codes and local stretch codes.