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Green hydrogen from biogas

Green hydrogen from biogas

electricity costs
Levelized Cost of Electricity (Cent/kWh)

Hydrogen is considered the ideal raw material for a sustainable energy market transformation. However, some questions still await answers. Where will we get our hydrogen? Will we use the gray, blue, turquoise or green variant in the distant and not-so-distant future? Green hydrogen is produced using renewable energy sources and often generated via water electrolysis.

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NewBusFuel – economically sustainable hydrogen supply

NewBusFuel – economically sustainable hydrogen supply

bus-station

Hydrogen refueling station with on-site electrolyzer, © WSW, Hydrogenics

Fuel cell buses have many advantages over their diesel counterparts, making them an attractive option for mass transit companies. A few examples are the complete absence of local emissions, the greater flexibility in choosing a primary energy carrier and, depending on the source of the hydrogen and the use of renewables, considerable potential for reducing carbon dioxide levels. (more…)

H2 Production by Water Electrolysis – Trends

H2 Production by Water Electrolysis – Trends

NEL

Alkaline electrolyzer at Akzo Nobel, © NEL

Splitting water into hydrogen and oxygen with the help of electrical energy is commonly known as water electrolysis. This process matches the oxyhydrogen experiments one may remember from the classroom, albeit in reverse. If the anode and cathode in an electrolyzer cell are separated by a semipermeable membrane or a diaphragm, the gases produced by the process can be directed out of the cell individually. (more…)

Power-to-Liquids Takes Off

Power-to-Liquids Takes Off

PtL_jet_fuel

PtL jet fuel from renewable sources, © UBA, [2]

The aviation industry is aiming for carbon-neutral growth starting in 2020 and a CO2 reduction of 50 per cent by 2050 compared to 2005 [1]. There are currently two options under discussion to achieve these goals: Emission certificates and biofuels. Both are not immune to criticism because of their direct and indirect impact on the environment. (more…)

Meta-Study: Hydrogen Is Competitive

Meta-Study: Hydrogen Is Competitive

CoverRenewably sourced hydrogen has recently gained considerable importance in several economic sectors at once. The automotive and fuel industry sees it primarily as a way to power fuel cell vehicles, whereas its main use in the natural gas industry is for grid feed-in. The diversity of applications means that different industries will employ different technological and economic strategies for utilizing hydrogen. To compare strategies and examine the combined utilization potential, the National Organization Hydrogen and Fuel Cell Technology (NOW) and the German Technical and Scientific Association for Gas and Water (DVGW) decided to join forces (more…)