A market projected to grow nearly ninefold in a decade, from $1.01 billion this year to $8.81 billion by 2036 at a 24.2% compound annual rate, would ordinarily read as an unambiguous investment signal. For hydrogen electrolyzers, the number deserves closer scrutiny than the headline allows, because it arrives at a moment when the gap between installed manufacturing capacity and actual project deployment has become the defining feature of the industry, not a footnote to it.
The disconnect is starkest in China, where alkaline electrolyzer manufacturing capacity is on track to reach 43.77 gigawatts annually by mid-2026, alongside 2.7 gigawatts of proton exchange membrane capacity. As recently as 2024, that same manufacturing base was running at roughly 39 gigawatts a year against domestic procurement of only about 693 megawatts over ten months, a supply base operating at a fraction of a percent of its theoretical output. That gap explains why Chinese alkaline system pricing has fallen to roughly $1.0 million per megawatt against $2.0 million to $2.5 million for Western equivalents, with stack costs specifically falling from $0.36 million per megawatt in 2021 to $0.13 million by 2024.
That price trajectory complicates the revenue math behind any electrolyzer market forecast built primarily on unit growth. If average selling prices keep compressing at the rate the last five years have shown, shipped capacity has to expand considerably faster than 24.2% annually just to deliver 24.2% revenue growth. The market’s own segmentation, with alkaline systems holding 47.0% share on the strength of lower installation cost, is consistent with the Chinese cost story, but it also means the largest product category is the one experiencing the steepest deflation.
The pressure on incumbent equipment makers is not hypothetical. Nel ASA, named among the market’s leading companies in most electrolyzer forecasts, halted stack production at its recently modernized Herøya facility this year, a decision tied directly to competitive pressure from Chinese suppliers. Electrolyzer manufacturers outside China are broadly facing revenue reductions, and in some cases bankruptcy or acquisition, even as China’s share of global manufacturing capability trends toward 70% to 75%. A market growing at a healthy CAGR while its non-Chinese suppliers shed capacity is not a contradiction, but it does mean the value captured by Western and Japanese manufacturers named in most industry rankings may not track the topline figure at all.
Demand-side conditions add a second layer of skepticism. Roughly 50 hydrogen projects globally have been publicly canceled amid a combination of high costs and slower-than-expected offtake, with green hydrogen production in Europe still running $4.50 to $6.00 per kilogram against $1.50 to $2.50 for conventional grey hydrogen. By the end of 2024, more than a fifth of announced EU green hydrogen projects, representing close to 29 gigawatts of planned electrolyzer capacity, had already been shelved, scaled back, or delayed, and global withdrawals of low-emissions hydrogen capacity ran past 4.9 million tonnes in the twelve months to the end of 2025. A December 2024 cancellation of a more than 1 gigawatt electrolyzer order by a single developer stands as a clear marker that equipment supply has been running ahead of bankable projects, not the reverse.
The United States figure in the country-level breakdown, a 20.9% CAGR through 2036, warrants particular caution given the policy backdrop. The Clean Hydrogen Production Tax Credit’s eligibility window was sharply compressed under the 2025 reconciliation law, restricting the credit to facilities that begin construction before 2028, with developers now needing to place projects in service before the credit lapses or pivot to the investment tax credit route instead. The credit’s curtailment has already been tied to a cascade of stalled final investment decisions among major developers. A near-21% compound growth rate for US electrolyzer demand assumes a policy environment considerably more stable than the one currently in force.
The installation-type data, with on-site systems capturing 58.0% share, reflects a genuine structural constraint rather than a preference: hydrogen transport and storage infrastructure remains underbuilt almost everywhere, forcing producers toward co-located generation regardless of whether that is the most efficient configuration at scale. The same logic explains why ammonia production, at roughly 26.0% of end-use demand, has become the anchor application, since fertilizer plants can absorb output on-site without pipeline dependency. But ammonia and steel offtake have not been immune to the broader retrenchment either; downstream industrial buyers, including several steelmakers, have suspended hydrogen-linked projects over the past year on the same cost and supply uncertainty affecting production-side developers, which limits how much of the manufacturing capacity buildout actually clears into commissioned demand.
Forecast dispersion across the research industry itself is instructive. At least one other recent estimate pegs the broader electrolyzer market at $11.30 billion already in 2025, reaching $95.10 billion by 2035 at a 23.74% CAGR, an order of magnitude above the figures at hand for a comparable time horizon. Similar compound growth rates producing terminal values that differ by roughly tenfold is less a matter of methodology than of how each model treats the overcapacity question: whether it tracks manufacturing shipments at collapsing Chinese price points, bankable installed capacity net of cancellations, or some blend of the two. Buyers of any single electrolyzer forecast would do well to ask which of those three markets is actually being sized before treating the CAGR as a planning input.
