China's existing green hydrogen projects are largely concentrated across its north, where abundant wind and solar resources have pushed renewable electricity prices down. "The northern regions have abundant wind and solar resources, so green electricity is cheaper," Liu told NewsChina, noting that electricity accounts for the largest share of green hydrogen production costs. But even so, the economics remain difficult.
According to Liu, producing 1 kilogram of hydrogen through electrolysis requires roughly 45 to 55 kilowatt-hours of electricity. This brings energy costs to more than 20 yuan (US$3) per kilogram, about 60 percent of its total production cost and considerably higher than for gray hydrogen.
At a 2025 Tsinghua University forum on the carbon-neutral economy, Liu Yinghong, deputy general manager of Sinopec's Development Planning Department and New Energy Office, put the cost gap in stark terms.
Coal-based hydrogen costs only about 12 yuan (US$1.80) per kilogram in China, while it costs about 15 yuan (US$2.25) with natural gas. The total cost of green hydrogen is around 22- 32 yuan (US$3.25-4.75) per kilogram, more than twice that of gray hydrogen.
Falling renewable electricity costs offer some hope. In China's northern regions, photovoltaic power generation costs have fallen to around 0.15-0.20 yuan (US$0.02-0.03) per kilowatt-hour. This could bring green hydrogen costs below 15 yuan per kilogram, approaching the cost of gray hydrogen.
That calculation was one reason Sinopec built its first 10,000-ton-scale photovoltaic green hydrogen demonstration project in Kuqa, Northwest China's Xinjiang Uygur Autonomous Region.
The nearly 3 billion yuan (US$450m) project began producing hydrogen in June 2023 and was fully completed two months later. Second only to Saudi Arabia's NEOM Green Hydrogen Project in size, the Kuqa plant is designed to produce 20,000 tons per year. The project sends hydrogen through a pipeline to a refinery about 20 kilometers away, replacing hydrogen previously produced from natural gas.
The project relies on conventional alkaline electrolyzers, a mature tech that splits water into hydrogen and oxygen gases with electricity and an alkaline solution. Though inexpensive, startup and shutdown can take tens of minutes, making it poorly suited to intermittent wind and solar power, Liu Siming explained.
This mismatch leaves electrolyzer capacity underutilized and can drive up production costs. For example, Sinopec's Kuqa project produced a cumulative 14,900 tons of green hydrogen by September 2025, meaning its annual output during that period was only around 30 percent of its designed capacity.
More advanced technologies, such as proton exchange membrane (PEM) electrolyzers, can respond more flexibly to fluctuations in renewable power, with cold startup taking only a few minutes.
However, Zhang Bo, a professor at Shanghai-based Fudan University who specializes in electrocatalysis, told News- China they come at a much higher cost.
PEMs rely heavily on iridium, whose global annual output is only around 7 to 10 tons. "The price is more than 1,600 yuan per gram (US$238), making it more expensive than gold," Zhang said.
Moreover, producing each kilogram of hydrogen requires around 9-10 liters of deionized water, posing an additional challenge in northern and northwestern China, where water resources are scarce. And that is before factoring in depreciation and labor.
For chemical companies, which currently account for the bulk of hydrogen demand, the economics can be even harsher.
Their existing coal-to-hydrogen facilities typically have lifespans of 20 to 30 years, with investments ranging from tens of millions to billions of yuan. Companies are not only reluctant to abandon these facilities before recovering their investments but are also highly sensitive to additional costs. Even a modest increase in the cost of each kilogram of hydrogen can translate into huge annual expenses for plants consuming tens of thousands of tons of hydrogen.