Hydrogen Production from renewable sources?

② Cost. At present, the mainstream method for obtaining hydrogen is industrial by-product hydrogen, because it is simple to obtain, and the cost is low, only need to purify the gas, but the capacity is limited. For renewable hydrogen production to be applied on a large scale, its cost must be comparable to or lower than the current cheaper natural gas reforming hydrogen production.

③ Scale. The hydrogen production method should be reproducible and have the conditions for large-scale production. If you want to use hydrogen energy as a means of peak regulation of the grid, then the hydrogen production capacity can at least reach the level of absorbing excess solar, wind and other intermittent renewable energy sources.

④ High efficiency. Hydrogen production methods need to consider the issue of efficiency, hydrogen production efficiency is too low will not only lead to waste a lot of primary renewable energy, in a certain amount of hydrogen production projects will also need more construction resources, thus hindering scale.

⑤ Do not occupy a certain amount of necessary resources. In the future, the social energy system will be built around electrification, and if hydrogen energy is used as the carrier of energy and the way of energy storage to cooperate with renewable energy, there will be a process of electricity to hydrogen and hydrogen to electricity. At this time, hydrogen production can only be used as a regulatory means to deal with intermittent and surplus renewable energy, store the surplus intermittent energy, and finally convert hydrogen energy into electricity when there is a shortage, and stable renewable energy will not be the energy source target for hydrogen production.

From the above points of view, under the current conditions, wind power and photovoltaic power generation hydrogen production is the best renewable energy hydrogen production method, and there have been successful demonstration examples at home and abroad. Hydrogen production from other renewable energy sources is more or less faced with large-scale, low efficiency problems, and does not have application prospects. However, hydrogen production from wind power and photovoltaic power generation is also facing cost problems, but the cost can be reduced through technological progress.