octane

There’s always a risk when you take a new approach to doing or making something that your expectations won’t pan out — that something you hadn’t figured on happens and messes things up. But oh, the satisfaction that comes when the stars align exactly as you foresaw. The folks who developed Project Traveler, a recently completed Houston-area plant that produces high-value, octane-boosting alkylate from ethylene, isobutane and other widely available and low-cost feedstocks, know that good feeling, as we discuss in today’s RBN blog on the project’s economics. 

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.

Since 2019, more than 1.3 MMb/d of U.S. refinery capacity has been either shut down for economic reasons or converted to renewable diesel production. The decline in the nation’s ability to produce gasoline and diesel hampered the refining sector’s response to the post-COVID demand recovery and exacerbated the big run-up in motor fuel prices that followed Russia’s invasion of Ukraine last February. Now, there may be a new threat to U.S. refining, namely the possibility that a proposed Environmental Protection Agency (EPA) rule on hydrofluoric-acid-based alkylation could, over time, spur an even larger round of refinery closures. In today’s RBN blog, we continue our look at alkylate — a critically important part of the U.S. gasoline pool — the prospective regulation and its possible effects.

Alkylate is an important and valuable part of the U.S. gasoline pool, prized for its high octane, low volatility and low sulfur content. There are two primary catalysts that refiners can opt to use in the production of alkylate: hydrofluoric acid, or HF, and sulfuric acid, or H₂SO_4.  Each is quite popular, with HF and sulfuric acid technologies each representing about half of domestic alkylation capacity — and with those shares varying significantly on a regional basis. While refiners have been safely operating both types of “alky” units for many decades, HF alkylation for some time has been in the crosshairs of the Environmental Protection Agency, which recently proposed that refiners be required to undertake extensive evaluations of potentially safer alternative technologies. It’s hard to know for sure, but if EPA’s proposed rule is made final it could ultimately force many refineries to make very costly changes — into the hundreds of million dollars per unit — or maybe even shut down entirely. In today’s RBN blog, we look at alkylate, how it’s made, and the potentially profound effects of the impending regulation.

In these uncertain times, with the energy transition in flux and a recession looming, it takes moxie for a company to make a major capital investment in an energy-related project, especially one that could arguably be called the first of its kind. But that’s what’s happening at a site along the Houston Ship Channel (HSC) in Pasadena, TX, where Next Wave Energy Partners, which is now completing an ethylene-to-alkylate plant, is planning an adjoining ethanol-to-ethylene facility that will enable the company to produce bioethylene, renewable alkylate and/or sustainable aviation fuel (SAF), depending on market demand, production economics and other factors. In today’s RBN blog, we discuss the ins and outs of Next Wave’s Project Lightning.

Over the past five years, the price differential between regular and premium gasoline has been widening steadily.  According to the Energy Information Administration (EIA), as of July 2017 the premium -vs.-regular differential reached $0.53/gallon — more than double the differential in 2012. This has produced cringe-worthy experiences at the pump for consumers requiring the premium grade and an incentive for refiners to optimize the gasoline pool.  Consequently, refiners have been making operational adjustments and capital investments to squeeze additional high-octane components out of their feedstocks. Today we examine the premium-regular gasoline differential, provide a primer on gasoline blendstocks and octane levels, and discuss some contributing factors to the widening divide between the pump prices of 87- and 93-octane gasoline.