Offshore green hydrogen production in the German Bight may affect the North Sea’s marine environment, according to a new study by German research institute Helmholtz-Zentrum Hereon that highlights how waste heat from electrolysis could alter local water temperatures and sea stratification.

It is understood that almost 80% of the energy used worldwide currently comes from fossil fuels such as oil, coal, and gas, and as part of the energy transition, these are to be increasingly replaced by environmentally friendly energy sources such as climate-neutral hydrogen.