Daily Energy Blog

Around the world, there’s a strong push to put aviation on a more sustainable footing and reduce the industry’s greenhouse gas (GHG) footprint. Increasing the production of sustainable aviation fuel (SAF) — a close cousin of renewable diesel (RD) — is key to this effort. But while the economic case for producing RD in the U.S. has been compelling for some time thanks to government subsidies, the returns on investment for producing SAF appear more dubious, despite a seemingly generous production tax credit for SAF in the Inflation Reduction Act (IRA). As we discuss in today’s RBN blog, the incentive for making jet fuel is likely too small — and too short-lived — to overcome the higher cost of production for SAF compared to RD, and additional incentives may be needed to spur meaningful increases in SAF production.

Clean ammonia, produced by reacting either “blue” or “green” hydrogen with nitrogen, is emerging as one of the most highly touted low-carbon energy sources of the future, thanks largely to massive tax incentives provided by the Inflation Reduction Act (IRA). Skeptics may question the extent to which clean ammonia — and clean hydrogen, on which it’s based — can realistically take market share from natural gas and coal as leading power-plant fuels over the next 20 to 30 years, but there’s a lot to be said for them and, as wind- and solar-power developers have already come to appreciate, billions of dollars in governmental support can do wonders. In today’s RBN blog, we continue our look at the growing list of U.S. clean ammonia projects now under development.

There’s been a lot written about the federal government’s plan to provide billions of dollars in financial support to create a limited number of regional hydrogen hubs but not a lot of insight about how those hub proposals are being crafted to meet the Department of Energy’s (DOE) selection criteria. The details and strategies behind those plans have been hard to come by because few of the initial concept papers were made public while others remain a mystery, even months after the first informal winnowing of candidates. One exception is the Leading in Gulf Coast Hydrogen Transition (LIGH₂T) hub proposal being prepared by a consortium that includes a large group of states, some key commercial partners, several universities and the National Energy Technology Laboratory (NETL). In today’s RBN blog, we look at what we know about the LIGH₂T proposal, which will submit a full application by the April 7 deadline, and how it addresses three key factors likely to play a role in the selection process.

As the push for decarbonization in the transportation sector gathers momentum, electrofuels — also known as eFuels, which are produced by using electricity to combine the hydrogen molecules from water with the carbon from carbon dioxide (CO₂) — are beginning to attract attention as an alternative fuel with three important selling points in today’s environment. First, eFuels are available now and can be made with current technology, although there is a lot of room for future improvements and growth. Second, because they are considered drop-in replacements, they are essentially indistinguishable from the fossil-based conventional fuels in use today, which means they can be used without any changes to the existing energy infrastructure. Third, they can capitalize on a rapidly growing set of hydrogen and CO₂ suppliers eager to secure a diversified set of offtakers. In today’s RBN blog, we look at HIF Global’s approach to eFuels production, its demonstration plant in Chile and its big plans for Texas and beyond.

The lack of successful projects has long been a thorn in the side of the carbon-capture industry, with a few high-profile cases falling short of expectations for a variety of economic and technological reasons. When looking for a prime example of how a highly touted (and taxpayer-supported) project can still fall short, the Petra Nova facility southwest of Houston, which completed its three-year demonstration period shortly before being shut in 2020, often comes to mind. But now it’s just a few months away from getting another shot, courtesy of its new owner and recovering oil prices. In today’s RBN blog, we look at the impending restart of the Petra Nova project, how falling oil prices overshadowed its technical successes, and its importance to the carbon-capture industry.

When carbon dioxide (CO₂) is captured and stored deep underground, a process known as carbon capture and sequestration (CCS), it’s supposed to remain there permanently. Although much of today’s emphasis is on moving carbon-capture projects from aspirational to operational, there are long-term challenges to making sure those emissions stay put away for good, even if the odds of a significant leakage are considered remote. In today’s RBN blog, we look at the common risk factors for carbon-capture projects, explain why a site’s post-injection care-and-monitoring period can last for several decades, and detail the leakage risks that project planners must be prepared to handle.

Pretty much everywhere you look, there’s a focus on decarbonizing the global economy, and a lot of those discussions start with the transportation sector. It generated 27% of U.S. greenhouse gas (GHG) emissions in 2020, putting it at the top of the list, just ahead of power generation and industrial production; combined, the three sectors account for more than three-quarters of the nation’s GHG emissions. For personal transportation, most of the attention has been on electric vehicles (EVs), but since the commercial transportation sector is largely powered by diesel and jet fuel, the push for decarbonization in trucking, air travel, and shipping has largely focused on ways to produce alternative fuels that reduce GHGs. Among those are ultra-low-carbon fuels called electrofuels, also referred to as eFuels, synthetic fuels, or Power-to-Liquids (PtL). In today’s RBN blog, we explain what eFuels are and how they compare to other alternatives, how they are produced, and what opportunity there might be to make a dent in the consumption of traditional transportation fuels.