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The paper argues that fragmentation of trade-related climate measures (TrCMs) creates significant regulatory burdens, particularly for small and medium-sized enterprises in smaller economies. It distinguishes 'interoperability'—the ability to pass useful information between systems—from 'harmonization,' suggesting that focusing on the former allows governments to reduce trade barriers while preserving policy space. The author proposes several strategies to achieve this, including alignment with international standards like ISO 14067 and IPCC guidelines, adopting flexible information systems, focusing on high-impact sectoral products (e.g., steel, aluminium, and concrete), and utilizing a structured 'top-down' approach to collaboration based on a hierarchy of regulatory objectives and principles.

Following 2019 legislation to decarbonize Colorado's electricity sector, the Public Utilities Commission (PUC) must investigate whether transitioning to performance-based regulation (PBR) is 'net beneficial'. The briefing suggests that the PUC should utilize scenario analysis and collaborative stakeholder processes, drawing on examples from Hawaii, Minnesota, and Oregon to align utility incentives with goals such as emissions reductions and cost-efficiency.

The document analyzes how a U.S. federal cap-and-trade system can address 'early action'—emissions reductions occurring before the program's start. It argues that awarding credits from 'under the cap' preserves environmental integrity, whereas credits 'above the cap' risk inflating permissible emissions. The paper details the challenges of verifying reductions for voluntary direct, indirect, and offset actors, particularly regarding additionality and leakage. It also proposes mechanisms for transitioning existing regional programs, such as the Regional Greenhouse Gas Initiative (RGGI), into a federal system using dollar-for-dollar allowance exchanges to prevent price volatility.