When excess electricity from renewable energy sources is converted into hydrogen in power-to-gas plants, “green hydrogen” is produced. It is an environmentally friendly energy source and raw material that is easy to transport and store.
green hydrogen (H2)
Green hydrogen is produced from renewable energy sources
Green hydrogen stabilises the electricity and heat supply
Renewably-produced hydrogen can be converted into heat or electricity and used flexibly for domestic energy and electricity supply. In this way, it ensures that renewable energies are always available in sufficient quantities in the event of weather-related power fluctuations.
Green hydrogen is versatile and can be used innovatively
Hydrogen is the most widespread element on earth and has great innovative potential. It can be used as a fuel or coolant, and to generate electricity and heat, but can also be used as a raw material in industry. Electrolysis technologies are already on the threshold of the growth and profit phase, and fuel-cell systems are already being used successfully today. However, for hydrogen from power-to-gas plants to be successfully marketed economically, a technology-open legal framework needs to be established in Germany.
Green hydrogen reduces CO₂ emissions
Currently, 96 % of hydrogen is produced on a fossil basis. The conventional production method produces climate-damaging carbon dioxide that escapes into the atmosphere. In the power-to-gas method, however, water is broken down into hydrogen and oxygen by electrolysis. While further use is made of the hydrogen, the by-product oxygen can either be used for other applications or simply released into the environment.