Systems that use solar energy to produce hydrogen include photodecomposition hydrogen production, solar power generation, and combined water electrolysis hydrogen production systems. Solar hydrogen production has only developed over the past 30 to 40 years. So far, research on solar hydrogen production has mainly focused on the following technologies: thermochemical hydrogen production, photoelectrochemical decomposition hydrogen production, photocatalytic hydrogen production, photosynthesis hydrogen production artificial and biological hydrogen production.
Depends on local market and policy environment, as well as technology maturity and cost.
The profitability of photovoltaic energy production to produce hydrogen mainly depends on the local energy market and thepolitical environment, as well as the maturity and cost of photovoltaic energy production and hydrogen production technology. If the local government has relevant supporting policies, such as subsidies or tax incentives, or the energy market has demand for high-value hydrogen, then photovoltaic power generation to produce hydrogen hydrogen will be more profitable. With the continuous progress and cost reduction of solar panel technology and water electrolysis, the cost of hydrogen production from photovoltaic power generation will gradually decrease, thereby improving its cost-effectiveness.