As the world pays more and more attention to reducing emissions and mitigating climate change, analysts believe that the most abundant element in the universe—hydrogen—has the potential to become a mainstream energy technology and a key clean fuel source in the future that could help reduce greenhouse gas emissions.
In some industries, including oil refining, ammonia production, and methanol production, hydrogen is already widely used.
There are currently two ways of producing hydrogen: one from natural gas and the other by electrolysis from renewable sources.
Producing hydrogen from natural gas is costly. Production of scales also produces CO2 emissions estimated by some accounts as equivalent to those of the United Kingdom and Indonesia combined per year. If this is the case, then it is more cost-effective to use natural gas as a direct energy sources rather than use it produce hydrogen.
The second method of production is by electrolysis from renewable energy sources. This is a more costly method than from natural gas. Moreover, it needs investments worth billions of dollars to build the necessary infrastructure to scale up the zero-emission hydrogen production.
Still, hydrogen is widely used in some industries, including oil refining, ammonia production, and methanol production.
Other potential use is hydrogen fuel cells (FCVs) as an alternative to internal combustion engines (ICEs) in global transport.
And even with the advances made in hydrogen technology over the past 20 years, there are still many challenges to be overcome before hydrogen FCVs can compete in the market with current motor technology.
However, the most significant challenge is the cost and durability of the fuel cell system.
Another challenge is that the numbers of FCVs sold and out on roads worldwide is quite small. Only 1,074 fuel cell vehicles were sold in the US during 2016. The numbers for Europe are even much smaller.
Experts estimate it will take 40 years or more before hydrogen has any meaningful impact on gasoline consumption or global warming.
Still, the vision of a hydrogen economy is currently being kept alive with Iceland already leading the way to become the world’s first fully-operational hydrogen economy. Icelanders even dream of exporting hydrogen and creating a booming new industry (though first they will have to figure out a way to get it there). Visions don’t come cheap. (For more information on Iceland’s hydrogen vision, please refer to my research paper titled: ”How Viable is the Hydrogen Economy: The Case of Iceland” which I gave at the 28th USAEE/IAEE North American Energy Conference in December 3-5, 2008 in New Orleans, Louisiana, USA).
The vision of a hydrogen economy in Iceland as spelled out by Professor Bragi Arnason, nicknamed ‘Professor Hydrogen’ by the Newsweek Magazine, is to take all of Iceland’s cars and fishing trawlers and gradually replace their gas combustion engines with electric motors run on FCVs. Meanwhile, harness Iceland’s abundant geothermal and hydro-energy resources to begin producing hydrogen gas on a mass scale.
Iceland is a model in the making. With a population of only 290,000 people and with its abundant hydro-energy and its huge geothermal energy, Iceland has already started the transformation into a hydrogen economy. For a number of years, public transport buses in Reykjavik, the capital, have already been running on FCVs. The next step is the introduction of FCVs for private transport. Eventually the entire Icelandic fishing fleet will be gradually powered by FCVs. The question is when and at what cost.
Dr Mamdouh G Salameh
International Oil Economist
Visiting Professor of Energy Economics at ESCP Europe Business School, London