Bottom Line on Cost Containment

The document outlines various design features of cap-and-trade programs intended to manage compliance costs and price volatility. It details the roles of compliance period lengths, carbon offsets, banking and borrowing of allowances, and price-stabilization tools such as price floors, price caps, and allowance auction reserves. The text emphasizes the balance between reducing economic burdens for companies and maintaining the environmental integrity of emissions caps.

• Compliance costs can be reduced by implementing longer compliance periods, which mitigate the effects of fuel price fluctuations, weather events, and business cycles. In the United States, two or three-year periods are standard, though the Regional Greenhouse Gas Initiative (RGGI) may extend this to four years if prices remain high.
• Banking and borrowing provide flexibility for firms to manage emissions reductions. Banking allows firms to save spare allowances for future use, which can lower overall costs and temper price swings. Borrowing allows firms to exceed current caps in exchange for future reductions, but it is viewed cautiously due to risks of default and potential lobbying for weaker future targets; consequently, it has been excluded from the EU ETS, RGGI, and U.S. SO2 and NOx programs.
• To prevent carbon prices from falling too low and stalling low-carbon investment, programs may use price floors in auctions, reduce the quantity of offsets, or constrain borrowing. Conversely, high prices can be managed via price triggers, price caps (safety valves), or allowance auction reserves. The Midwestern Accord utilizes a price collar and a cost containment pool where 2 percent of allowances are set aside annually for auction if prices spike.
• Carbon offsets allow regulated companies to purchase emissions reductions from non-regulated sectors, which can be cheaper than internal reductions. To ensure that emissions reductions still occur within the capped sectors, programs typically limit the number of offsets allowed for compliance.

APA

World Resources Institute (n.d.). Bottom Line on Cost Containment. https://www.wri.org/research/bottom-line-cost-containment

Chicago

World Resources Institute. Bottom Line on Cost Containment. n.d. https://www.wri.org/research/bottom-line-cost-containment.

Wikipedia

{{cite report |author=World Resources Institute |title=Bottom Line on Cost Containment |url=https://www.wri.org/research/bottom-line-cost-containment |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{worldresourcesinstitutendbottom, author = {{World Resources Institute}}, title = {{Bottom Line on Cost Containment}}, institution = {World Resources Institute}, url = {https://www.wri.org/research/bottom-line-cost-containment}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }