Site items in: Content by Author Stephen H. Crolius

Safe and Effective?  New Study Evaluates Ammonia as a Marine Fuel
Article

In mid-June the Dutch naval architecture firm C-Job released "Safe and effective application of ammonia as a marine fuel," a thesis written by the firm’s Lead Naval Architect Niels de Vries for the Marine Technology Master of Science program at the Delft University of Technology in the Netherlands. While the thesis delivers an extensive assessment of ammonia's potential effectiveness as a marine fuel, it breaks new ground in its consideration of ammonia's safety in this context.

Japan, U.S., E.U. Agree to Cooperate on Hydrogen
Article

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 Evolving Context of Ammonia-Coal Co-Firing
Article

Co-firing ammonia in a coal-fueled boiler, a concept under active development in Japan, received positive notice in the International Energy Agency’s recently published report, The Future of Hydrogen. So far serious scrutiny of the co-firing concept is limited to Japan.  In the fullness of time, the demand side of the concept may take root in other countries.  The supply side, however, could have near-term global relevance. 

An Open Letter to the International Energy Agency
Article

To the Authors of The Future of Hydrogen: First I would like to thank you for an excellent report.  I have devoted two Ammonia Energy posts to The Future of Hydrogen.  If you read them, you will see that my appraisal is overwhelmingly positive.  But I am writing this letter because I take issue with your characterization of ammonia's hazard profile. I hereby submit that your discussion in this regard is inaccurate and unhelpful.   

Ammonia Figures Prominently in IEA Hydrogen Report
Article

Two weeks ago the International Energy Agency released The Future of Hydrogen, a 203-page report that “provides an extensive and independent assessment of hydrogen that lays out where things stand now; the ways in which hydrogen can help to achieve a clean, secure and affordable energy future; and how we can go about realising its potential.” In this, the second part of a two-part article, the report's extensive treatment of ammonia is considered.

IEA Releases Forward-Looking Hydrogen Report
Article

Last week the International Energy Agency released The Future of Hydrogen, a 203-page report that “provides an extensive and independent assessment of hydrogen that lays out where things stand now; the ways in which hydrogen can help to achieve a clean, secure and affordable energy future; and how we can go about realising its potential.” In this, the first part of a two-part article, the report's overall strengths are considered.  The second part will focus on the report's discussion of ammonia as a contributor to the emerging hydrogen economy.

New Coalition Plans to Build Offshore Green Fueling Hubs
Article

Last week Wärtsilä, the Finnish engine and energy equipment manufacturer, unveiled a concept for producing and distributing low-carbon maritime fuels from purpose-built facilities in the waters off northern Europe.  Dubbed Zero Emission Energy Distribution at Sea (ZEEDS), the initiative is intended to help meet the International Maritime Organization’s target of halving the shipping sector's carbon dioxide emissions by 2050.  And although Wärtsilä’s press release on June 3 mentions only “clean fuels,” the headline used by logistics-sector publisher Freight Week for their June 5 story is “Offshore fuel hubs to supply green ammonia for zero-emission future.”

AFC Energy Completes Ammonia-to-Power Trials
Article

AFC Energy PLC, the British fuel cell company, announced on May 20 the successful conclusion of “ammonia to power (‘A2P’) fuel cell generator trials.”  The result is “proof of concept” for a system consisting of an "off the shelf" ammonia cracker and a proprietary alkaline fuel cell that can readily utilize hydrogen with residual quantities of uncracked ammonia.  The achievement positions AFC “to conclude work on the business case and engineering of an integrated, scalable ammonia fuelled clean power generator.”

Study Models NH3 Economics from Variable Energy Resources
Article

Last week IEA Consultant Julien Armijo and IEA Senior Analyst Cédric Philibert submitted their study Flexible Production of Green Hydrogen and Ammonia from Variable Solar and Wind Energy:  Case Study of Chile and Argentina to the International Journal of Hydrogen Energy and concurrently posted it on ResearchGate.  The study addresses one of the key questions of the energy transition: what are the economics of producing hydrogen, or a hydrogen carrier such as ammonia, at sites with excellent renewable energy resources?  The answer, framed in terms of the cost-competitiveness in local markets of green ammonia vs. conventionally produced brown ammonia, casts an encouraging light on the eventual prospects for international trade in green ammonia as an energy commodity.