US Department of Energy

For producers to qualify for 45V tax credits, the US Treasury has proposed a set of new rules for renewable hydrogen that closely align with EU standards. The three pillars approach already adopted by the EU is proposed, as is the use of Argonne National Laboratory’s GREET model for lifecycle emissions analysis.

The US Department of Energy has launched a new scheme to help “catalyze durable, bankable demand” for clean hydrogen & ammonia production. A request for information notice seeks feedback on potential demand-side measures the US government could implement to complement the regional Hydrogen Hubs program.

The Biden administration has launched a $7 billion funding program to create regional clean hydrogen hubs across the US. Between six and ten applications will be selected, drawing on a diverse range of geographical locations, technology pathways and end-use applications. Alongside the funding announcement, the Department of Energy launched a draft of a new national hydrogen roadmap, outlining the key opportunities on offer for the emerging US clean hydrogen industry.

This week: Mitsui & Co., CF Industries team up to explore blue ammonia opportunities (and to link up US and Japan), CCS hydrogen in Pennsylvania, and the Infrastructure Bill.

Welcome to the Ammonia Wrap: a summary of all the latest announcements, news items and publications about ammonia energy. This week: commercialised ammonia gas turbines, TDK and GenCell join forces, another GW of green ammonia production, small-scale green ammonia in rural Japan, hydroelectric ammonia in Laos, Viking Energy vessel updates, new partnerships for Haldor Topsoe and "any-fuel" high-temp PEM fuel cells.

On June 18, Japan, the United States, and the European Union released a joint statement on “future cooperation in hydrogen and fuel cell technologies.”  Represented, respectively, by the Ministry of Energy, Trade, and Industry (METI), the Department of Energy (DoE), and the Directorate-General for Energy (ENER), the jurisdictions pledged “to accelerate the development of sustainable hydrogen and fuel cell technologies in the world.”  A central point of agreement in the statement is “the importance of reducing the cost of hydrogen.”

The U.S. Department of Energy H2@Scale program’s November 2017 workshop in California included mention of ammonia as a constituent of a future hydrogen economy. It also highlighted the relevance ammonia energy could have in California. California stands out globally as a large economy that is strongly committed to development of a hydrogen economy. The state’s strategy for hydrogen-powered transportation involves reducing the production cost of renewable hydrogen and the capital and operating costs of hydrogen fueling stations. It does not explicitly address the cost of intermediate hydrogen logistics. The question of cost is of utmost importance because California has so far put $120 million of public funds into hydrogen fueling stations and intends to invest an additional $20 million per year through 2022. The state’s aspiration is to move to a point where hydrogen that is used as a motor fuel is free of public subsidy. So it clearly behooves the state to investigate how ammonia could be used as a cost-reducing energy carrier. Toyota is active in California’s hydrogen movement and has announced plans to build a renewable hydrogen plant that will use cow manure as a feedstock. A project with a different conception, one that draws upon the solar and wind resources of the Mojave Desert to produce renewable hydrogen and logistically advantaged ammonia, would align better with the state’s sustainability objectives.

Last week, in Part 1 of this series on electrochemical ammonia synthesis technologies, I quoted a recent article by researchers at MIT that identified avenues for future research and development. One option was a biomimicry approach, learning from "enzymatic catalysts, such as nitrogenases," which can "either be incorporated into or provide inspiration for the design of electrocatalytic processes." The nitrogenase enzyme, nature's ammonia synthesis technology, was developed in an iterative innovation process, otherwise known as evolution, that took hundreds of millions of years to reach this level of efficiency. According to one group of electrochemists, who presented their results at the recent NH3 Energy+ conference, nitrogenase produces ammonia in nature with an enviable 75% process efficiency - so it's no surprise that they are basing their industrial technology on it.

At the recent NH3 Energy+ Topical Conference, Grigorii Soloveichik described the future of ammonia synthesis technologies as a two-way choice: Improvement of Haber-Bosch or Electrochemical Synthesis. Two such Haber-Bosch improvement projects, which received ARPA-E-funding under Soloveichik's program direction, also presented papers at the conference. They each take different approaches to the same problem: how to adapt the high-pressure, high-temperature, constant-state Haber-Bosch process to small-scale, intermittent renewable power inputs. One uses adsorption, the other uses absorption, but both remove ammonia from the synthesis loop, avoiding one of Haber-Bosch's major limiting factors: separation of the product ammonia.

In the race to place the automotive sector on a sustainable footing, the field is dominated by just two horses: battery-electricity and hydrogen fuel cells.  The economic implementation of BEVs is already well underway, with motor companies on track in 2017 to sell more than a million vehicles globally for the first time.  The economic implementation of FCVs is also in progress, albeit at a much earlier stage, and has the backing of major motor companies and public-sector agencies.  Given the huge leads enjoyed by electricity and hydrogen, ammonia is scarcely seen as a contending fuel.  Earlier this month, though, the U.S. Department of Energy’s ARPA-E unit published an interview with two of its program managers that has an intriguing implication: the race is far from over and ammonia may yet break to the front of the pack.

In the last 12 months ... The research community has made great progress toward solving the "selectivity challenge" in electrochemical ammonia synthesis. Although, rather than an actual solution, mostly what we have is a range of sophisticated work-arounds that succeed in making this problem moot.

In the last 12 months ... Ammonia energy has gained recognition from the United States Department of Energy, in both bottom-up and top-down programs. This establishes ammonia energy in the world’s largest economy as a legitimate target for both public- and private-sector investment.

The U.S. Department of Energy’s ARPA-E REFUEL Program, whose continued existence seemed to be in doubt two months ago, now appears to be back on track.  Invitations were sent a week ago for the ARPA-E REFUEL Program Kickoff, an event that was originally scheduled for April 25 and 26 in Houston.  It is now scheduled to take place in Denver on August 16, 17, and 18.  Attendance will be by invitation only.

At ARPA-E's recent Energy Innovation Summit in Washington, DC, Program Director Grigorii Soloveichik presented his vision for the future of transportation: hybrid electric vehicles that combine the advantages of both plug-in battery and fuel cell technologies. This "optimal solution" will require a new generation of fuel cell that is "fast, furious, and flexible." Fast, in terms of start-up / shut-down time. Furious, in terms of energy density. And flexible, in terms of fuel choice - specifically sustainable liquid fuels, like ammonia.

The US Department of Energy (DOE) is currently supporting six fundamental research projects that will develop "novel catalysts and mechanisms for nitrogen activation," which it hopes will lead to future sustainable ammonia synthesis technologies. These projects, announced in August 2016 and administered by the Office of Basic Energy Sciences, aim "to investigate some of the outstanding scientific questions in the synthesis of ammonia (NH₃) from nitrogen (N₂) using processes that do not generate greenhouse gases."

Six of the projects designated for funding by the ARPA-E REFUEL announcement on December 15 involve technologies on the use side of the ammonia energy space. Three focus on generating hydrogen from ammonia. Two focus on fuel cells that convert ammonia to electricity. One project involves both ammonia synthesis and use.

Earlier this year, the US Department of Energy (DOE) hosted a day-long meeting "to explore the scientific challenges associated with discovering alternative, sustainable processes for ammonia production." The report that came out of this roundtable discussion presents the participants' views on "the current state-of-the-art and the potential challenges and research opportunities ... for heterogeneous catalysis and homogeneous and enzyme catalysis."

The ammonia energy community has an opportunity to provide input to the United States Department of Energy (USDOE) as it defines priority areas for its new "H2 @ Scale" initiative. The USDOE posted a Request for Information (RFI) on September 9. Interested parties are invited to comment on all aspects of the H2 @ Scale concept. The deadline for comments is November 4. A link to the RFI is provided below.