Singaporean researchers have developed a method to calculate the levelized cost of hydrogen in solar-powered green hydrogen plants and highlighted the need to level the storage cost (LCOH) below $10/kg for green hydrogen to compete with grey, blue and orange hydrogen in the current technology environment.
The scientists said in a recent paper, “Green hydrogen from solar power to carbon dioxide removal: What does it cost?” Energy conversion management, that their model includes solar radiation, physical hydrogen storage, land footprint, carbon intensity of the power grid, and various factors such as project type, size, capital and operating costs, efficiency, and lifetime. They also said that in the current technology environment, LCOH of less than $10/kg is needed for green hydrogen to compete with gray, blue and orange hydrogen.
“The model accounts for the impact of intra-day and inter-day variations in renewable electricity generation by incorporating solar irradiance data with fine precision,” they said, noting that it also allows for import and export of local electricity. grid. “The model has the option of installing batteries for storing and utilizing renewable electrons. Likewise, it is also considering storing hydrogen molecules to manage hydrogen demand.”
“The biggest challenge in the design of this plant is to optimally use the transient and uncertain solar radiation to satisfy the hydrogen demand at the lowest cost,” the researchers emphasized. “With the help of the model, optimal plant planning can be achieved, which produces the cheapest green hydrogen in different geographical and technical-economic conditions.”