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Permit market auctions with allowance reserves

Abstract

This article investigates pollution permit auctions that incorporate allowance reserves. In these auctions the sale of a fixed quantity of permits is supplemented by an additional permit reserve. This reserve automatically releases permits if a sufficiently high price is triggered. The main justifications for implementing an allowance reserve are to reduce price volatility as well as assisting in cost containment. We show—paradoxically—that incorporating an allowance reserve into a permit auction can decrease firms’ payoffs, increase the clearing price, and increase compliance costs. This has implications for all major cap-and-trade markets, including the US Regional Greenhouse Gas Initiative

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