Sunfire, the German electrolyser maker, announced two financings on the same day in March 2024. One was a Series E equity round. The other was a loan from the European Investment Bank. Behind both sat a third source of money the company had already lined up months earlier: a government grant for the factories it wants to build. Read separately, each looks like a funding round. Read together, they look like a blueprint.
Key takeaways
- Sunfire raised $233.28 million in a Series E equity financing round from a syndicate of investors, announced on 5 March 2024, with J.P. Morgan SE acting as exclusive placement agent.
- The European Investment Bank provided Sunfire with a term loan of up to $108.5 million, announced on 5 March 2024 alongside the Series E equity round.
- Sunfire received a grant notification of $183.16 million in August 2023 under the EU's Important Projects of Common European Interest (IPCEI) programme, with 70 percent funded by the German federal government and 30 percent by German states.
- Sunfire plans to invest about $400 million in electrolyser production facilities in Saxony and North Rhine-Westphalia, with capacity to produce 500 MW of high-temperature and 1 GW of alkaline electrolysers.
- Enerdatics records 63 hydrogen financings in Europe announced between January 2023 and December 2024, of which 37 are government grants, 16 equity raises, 8 debt financings and 2 bonds.
Who put money into Sunfire?
Three types of capital came in, each with a different job. The equity round brought in new investors LGT Private Banking, GIC, Ahren Innovation Capital and Carbon Equity. Existing shareholders include Lightrock, Planet First Partners, Carbon Direct Capital, the Amazon Climate Pledge Fund and Blue Earth Capital.
The EIB loan adds debt on top. A term loan is a fixed amount repaid over an agreed period, and the EIB is the European Union's lending institution. Leap records the facility as up to $108.5 million.
The grant came first. In August 2023 Sunfire received notification of a $183.16 million grant under IPCEI, the EU framework that allows member states to subsidise projects considered strategically important across Europe. The equity and loan records describe Sunfire as having access to about $200 million of previously approved grant funding, a little above the amount on the grant record itself.
What is the money meant to build?
Factories, not hydrogen plants. Sunfire makes electrolysers, the machines that split water into hydrogen and oxygen using electricity. It works in two technologies: pressurised alkaline electrolysis and high-temperature solid oxide electrolysis.
The funds are earmarked to industrialise both. Sunfire plans to invest about $400 million in production facilities in Saxony and North Rhine-Westphalia, with capacity for 500 MW of high-temperature and 1 GW of alkaline electrolysers. The equity and loan records also name accelerating the development of the solid oxide electrolyser specifically.
Put the pieces side by side and the logic is clear. The grant covers a little under half of the planned factory investment. The equity round and the EIB loan together add about $341.8 million. Including the grant, Sunfire's three sources total about $525 million, more than the factory plan alone. That is consistent with the wider use of proceeds in the records, which also covers growth plans and development of the solid oxide technology.
Why does the grant come before the private money?
Because public money de-risks the private money that follows. A factory for a technology whose order book is still forming is a hard sell to investors. A grant that pays for a large share of the plant changes the arithmetic. It reduces how much equity has to be put at risk and gives a lender like the EIB more comfort that the factory will actually be built.
Germany has its own reason to pay. The production facilities support the country's National Hydrogen Strategy goal of at least 10 GW of electrolysis capacity by 2030.
Enerdatics' data shows how heavily European hydrogen finance leans on public money. Of the 63 hydrogen financings in Europe that Leap records between January 2023 and December 2024, 37 are government grants, against 16 equity raises, 8 debt financings and 2 bonds. Among electrolyser manufacturers, Sunfire's $233.28 million Series E sits second only to the $571.6 million raised by thyssenkrupp nucera in July 2023, and well ahead of the $44.8 million Stargate Hydrogen raised in Estonia in May 2024. Its $183.16 million factory grant is also the largest in the set for an electrolyser production facility, ahead of Topsoe's $102.4 million for a solid oxide factory in Denmark and thyssenkrupp nucera's $38.8 million for a 300 MW electrolyser production plant in Germany.
What does the deal signal for Europe's electrolyser makers?
It signals what a funding model for European electrolyser manufacturing can look like: a three-part stack of grant first, then equity, then development-bank debt. Sunfire is a clean example because all three pieces are visible and arrived within about six months of each other.
It also signals where the private risk sits. The equity investors in Sunfire's round include GIC, a private bank and several climate-focused funds, alongside Amazon's corporate climate fund. They are backing a manufacturer, not a project, which means their return depends on whether European demand for electrolysers grows fast enough to fill the new factories. The thyssenkrupp nucera listing raised less than its original target eight months earlier, a sign that public investors were weighing the same question.
The demand side is still thin. Most of the grants in Leap's European set go to hydrogen production projects that have yet to reach construction, and one of the largest projects in the set, H2 Green Steel's plant in Sweden, relied on guarantees to carry part of the risk in its senior loans. Sunfire now has the money to build factories. The open question is how quickly the orders arrive to run them.
Frequently asked questions
How much did Sunfire raise in March 2024? Sunfire raised $233.28 million in a Series E equity round and secured a term loan of up to $108.5 million from the European Investment Bank, both announced on 5 March 2024, for a combined total of about $341.8 million.
Who invested in Sunfire's Series E round? New investors were LGT Private Banking, GIC, Ahren Innovation Capital and Carbon Equity. Existing shareholders include Lightrock, Planet First Partners, Carbon Direct Capital, the Amazon Climate Pledge Fund and Blue Earth Capital.
What will Sunfire use the money for? Sunfire will use the funds to industrialise its solid oxide and alkaline electrolyser technologies, including production facilities in Saxony and North Rhine-Westphalia with capacity for 500 MW of high-temperature and 1 GW of alkaline electrolysers.
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