Chapter 135 of 2017 (AB 398, E. Garcia) requires our office to annually report on the economic impacts and benefits of California’s statutory greenhouse gas (GHG) emission goals—statewide emissions to 1990 levels by 2020 and to 40 percent below 1990 levels by 2030. This report provides a conceptual overview of the potential economic effects of policies intended to help meet these goals—both positive and negative—as well as identifies some key issues for the Legislature to consider when designing and evaluating state climate policies. In a companion report, Assessing California’s Climate Policies—Transportation, we provide more detailed information and comments on the state’s major policies aimed at reducing emissions from the transportation sector.