credits

When the price of the Tier 3 sulfur credit hit a new high of $3,600 in October 2023, the tradable sulfur credit for gasoline moved from the background to center stage in refining circles. And while credit prices have retreated slightly to about $3,400, they still represent a nearly 10-fold increase over two years and translate to a Tier 3 compliance cost of almost $3/bbl, raising concerns from refiners in a highly competitive market. In today’s RBN blog, we look at how refiners are adapting and the investments that could reduce the cost of compliance. 

The price of the Tier 3 gasoline sulfur credit hit $3,600 in October, up by a factor of 10 since 2022 and roughly in line with the all-time high reached in 2019. The high price of this important credit is a direct indicator of the true cost of compliance with the Environmental Protection Agency’s (EPA) Tier 3 gasoline sulfur standard and has raised some alarm recently in refining and financial circles. In today’s RBN blog, we give some specific examples of how refiners and investment analysts are reacting. 

If you buy premium gasoline, you’ve probably noticed its price differential versus regular has been increasing in recent years. That is a sign of the rising value of octane, the primary yardstick of gasoline quality and price. In this blog series we’ve examined a new gasoline sulfur specification called Tier 3, which is causing complications for U.S. refiners looking to balance octane and gasoline production while still meeting the regulatory limits on sulfur. In today’s RBN blog, the fourth and final on this topic, we provide an analysis of the obscure Sulfur Credit Averaging, Banking and Trading (ABT) system, which allows refiners to buy credits to stay in compliance with the Tier 3 specs. The price of these credits quintupled in 2022, another sign of a tight octane market that will be attracting increased attention in the months and years ahead.