This document outlines Boston's climate action plan to reduce greenhouse gas emissions and transition to renewable energy. It discusses how Boston has ranked as one of the most sustainable cities in the US. The plan focuses on community engagement, leading by example in city buildings, promoting green building standards, leveraging partnerships, and connecting climate action to economic development. The goal is to serve 150,000 households through the RenewBoston energy efficiency program by 2020 to achieve $2 billion in net savings and transition Boston's economy towards clean technology.