Hydrogen energy systems (HES) are increasingly recognized as pivotal in cutting global carbon dioxide (CO2) emissions, especially in transportation, power generation, and industrial sectors. This paper offers a comprehensive review of HES, emphasizing their diverse applications and economic...

Usage of hydrogen energy is low - just over one in ten has used it - but awareness is high at 82%. Approximately one in ten have never heard of hydrogen energy. The overall image of hydrogen is positive in terms of environmental impact compared to fossil and nuclear energy, although gasoline and...

Low carbon hydrogen (whether based on renewable or nuclear electricity, or fossil fuels with carbon capture) is a means to decarbonise sectors of the economy which are hard to electrify. Its business model is heavily dependent on government intervention (e.g. mandatory targets, subsidies,...

Global efforts to keep the rise in average temperatures within 1.5 degree Celsius are falling short. To achieve this goal, more extensive decarbonization measures are necessary across all sectors of the economy. Clean hydrogen is hydrogen that is produced using methods that result in limited or...

The energy transition is driving governments and industries to adopt various measures to reduce their climate impacts while maintaining the stability of their economy. Hydrogen technologies are one of the central topics in the energy transition. Different nations have different stances on it....