Reports

California’s climate emissions are falling, but cap-and-trade is not the cause
New data show that California’s greenhouse gas emissions covered by the state’s cap-and-trade system declined sharply in 2016, good news for state climate policy. However, the progress is almost entirely in the electricity sector.

The role of cap-and-trade in meeting California’s 2030 climate target
Comment on the relationship between the 2030 Scoping Plan and the cap-and-trade AB 398 implementation process.

California’s progress towards its 2020 climate target
In a talk at Stanford’s Energy Seminar, we assess the experience of California’s climate policies to date for the economy as a whole and in two key sectors, electricity and transportation

Managing uncertainty and risk in California’s proposed Scoping Plan Update
The California Air Resources Board’s plans for cutting greenhouse gas emissions face three major sources of uncertainty and risk: from vehicles, hydrofluorocarbons, and uncertainty in its business-as-usual projection.

Comment on CARB’s 2030 Target Scoping Plan Update Discussion Draft
Cullenward and Wara submitted a letter to CARB to comment on technical inadequacies, unbalanced evaluation of carbon taxes, and other shortcomings in the 2030 Scoping Plan Discussion Draft

Greenhouse gas accounting and market design for electricity market regionalization
Comment letter to the California Independent System Operator (CAISO) on regional greenhouse gas accounting and market design related to connecting California’s electricity market with neighboring markets

Transparency, policy specificity, and energy forecasting uncertainty in ARB’s Scoping Plan
Comment letter to the California Air Resources Board (CARB) regarding transparency, policy specificity, and energy forecasting uncertainty in the draft 2030 Scoping Plan analysis

State constitutional limitations on the future of California’s carbon market
We suggest options for modifying a post-2020 version of California’s cap-and-trade system to fit within the constraints of two major tax regulations, Propositions 13 and 26.

Attributing greenhouse gas emissions in a regional wholesale energy market
Comment letter to the California Independent System Operator and California Air Resources Board regarding attribution of greenhouse gas emissions

Regional integration of California’s electricity markets and greenhouse gas compliance
Comment for the California Independent System Operator (CAISO) on California’s evolving climate policy portfolio and critical market design questions