The Energy Services Coalition Chapter Playbook is a living document updated regularly and represents an ongoing process of collecting examples of successes and challenges emerging from state programs and state ESC Chapters. The Playbook outlines approaches from around the country of how to operate a successful state ESC Chapter in support of a statewide GESPC public program and to increase GESPC activity in a state. This document is an update of the Version One compendium that was posted to the ESC website in May 2016.