The RETI 2.0 Western Outreach project solicited information from Western stakeholders on renewable energy and transmission issues that could contribute to meeting California’s 50% renewable portfolio standard (RPS) and greenhouse gas (GHG) reduction goals. Two workshops were held to solicit stakeholder input; a Northwest-focused workshop in Portland on August 12, 2016, and a Southwest-focused workshop in Las Vegas on September 1, 2016. This final report summarizes the feedback from stakeholders and synthesizes relevant findings on western renewable energy markets, future renewable development, the western transmission grid, and proposed transmission expansion projects.