The advantages of green hydrogen
Globally, 196 nations have committed themselves to achieving the Paris Agreement Climate Goal, which calls for a maximum rise of 2°C in global temperature. In order to reach this elementary goal we have to reduce our fuel related greenhouse gas emissions. Green hydrogen, which is produced from renewable energy, is a carbon-free and will play a critical role in curbing climate change. Hydrogen is the solution to decarbonize hard-to-abate sectors. Industries such as transport, construction, infrastructure, agriculture consume energy in quantities that exceed what batteries can provide.
Hydrogen (H₂) is an excellent energy carrier. It has a high energy content per unit weight. It therefore has a significantly higher energy storage capacity compared to batteries. And it does not contain any rare earth materials. Hydrogen can be stored for longer periods without significant degradation, whereas batteries experience capacity fade over time.
Hydrogen is also very versatile. It can be used in various applications. It can be burned to generate heat, be combusted in internal combustion engines to generate power, or feed fuel cells to generate electricity. Green hydrogen is especially useful in industries that are difficult to electrify, such as long-distance trucks, buses, and heavy-duty equipment. These are industries that will not be able to use battery-only solutions, due to the charging speed or weight of the batteries. Refueling hydrogen is faster than recharging batteries. It takes minutes to refuel a hydrogen-powered vehicle, while recharging batteries may take hours, especially for high-capacity applications. This advantage makes hydrogen more suitable for applications that require quick refueling or where downtime is not feasible.