Curious about Everything

Tag: Hydrogen

Hydrogen a necessary and viable fuel for the future

The Economist » Hydrogen’s moment is here at last

Instead, hydrogen can help in niche markets, involving complex chemical processes and high temperatures that are hard to achieve with electricity. Steel firms, spewing roughly 8% of global emissions, rely on coking coal and blast furnaces that wind power cannot replace but which hydrogen can, using a process known as direct reduction. Hybrit, a Swedish consortium, sold the world’s first green steel made this way in August.

Another niche is commercial transport, particularly for journeys beyond the scope of batteries. Hydrogen lorries can beat battery-powered rivals with faster refuelling, more room for cargo and a longer range. Cummins, an American company, is betting on them. Fuels derived from hydrogen may also be useful in aviation and shipping. Alstom, a French firm, is running hydrogen-powered locomotives on European tracks.

Last, hydrogen can be used as a material to store and transport energy in bulk. Renewable grids struggle when the wind dies or it is dark. Batteries can help, but if renewable power is converted to hydrogen, it can be stored cheaply for long periods and converted to electricity on demand. A power plant in Utah plans to store the gas in caverns to supply California. Sunny and windy places that lack transmission links can export clean energy as hydrogen. Australia, Chile and Morocco hope to “ship sunshine” to the world.

More »

Green hydrogen — a clean fuel produced from water using renewables — will be comparable in cost and likely cheaper than blue hydrogen which is produced by burning fossil fuel by 2030

Justin Mikulka, Desmog »

“The True Cost of Solar Hydrogen,” the report from a European research team led by the European Technology and Innovation Platform for Photovoltaics, was published September 7 in the journal Solar RRL and concludes that “during this decade, solar hydrogen will be globally a less expensive fuel compared with hydrogen produced from natural gas with CCS [blue hydrogen].” (CCS is carbon capture and storage.)

This is a much different scenario than the argument being made by supporters of blue hydrogen, such as the gas industry and others who are claiming that within a decade green hydrogen will still be at least double the cost of blue hydrogen.

While there is some question about how dirty blue hydrogen is and will be — due to its reliance on gas, a fossil fuel, and carbon capture technology to reduce emissions from its production — no one is arguing that it will ever be cleaner than green hydrogen. Green hydrogen is clean now, whereas blue hydrogen advocates promise that this fuel may be less dirty at some point in the future, but even then, will never have zero emissions.

More »

© 2021 Joe Public

Theme by Anders NorenUp ↑