Isar Aerospace closes €270M Series D to scale Spectrum rocket production
German launch startup Isar Aerospace has closed a €270M Series D round to scale production of its Spectrum rocket and expand its launch infrastructure. New investors Island Green Capital and Molten Ventures joined existing backers HV Capital, Lakestar, and UVC Partners. UVC Partners committed €38M across its growth funds and a dedicated special purpose vehicle set up with KfW Capital, the German state-owned development bank's venture arm.
The Munich-based company, founded in 2018 by alumni of the Technical University of Munich's WARR student rocketry team, plans to use the capital to ramp up serial production at its new facility in Parsdorf, near Munich. The factory — Europe's largest integrated launch vehicle plant — is designed to produce up to 40 Spectrum rockets per year.
Isar Aerospace already has a launch pad in Norway and plans to build a second site at Spaceport Nova Scotia, Canada.
Europe conducted fewer than 10 orbital launches in 2025, roughly one-twentieth of the US total. That gap has become a strategic concern as geopolitics reshapes how European governments think about space access.
Defence and government demand has grown significantly over the past 12 months as a share of Isar Aerospace's customer base. "Space is no longer a frontier; it is the infrastructure of national power," said co-founder and chief executive officer Daniel Metzler.
The involvement of KfW Capital through the Germany Fund underscores how public-sector capital is flowing into the sector. Christian Röhle, co-head of investment management at KfW Capital, called sovereign access to space "of high strategic importance for the competitiveness of Germany and Europe."
Isar Aerospace has yet to reach orbit. Scaling from prototype to serial production of 40 rockets a year is an enormous engineering and operational challenge. The company also faces competition from other European launch ventures and must prove it can deliver on schedule — something the space industry is notorious for missing.
Dependence on government and defence contracts, while lucrative, could also tie the company's fortunes to shifting political priorities.
Isar Aerospace has reached late growth stage without yet achieving orbit — an unusual position that underscores how deeply European strategic anxiety about launch independence is shaping capital allocation. The round's structure is telling: rather than a single lead cheque from a US crossover fund, it was assembled from multiple European investors, with KfW Capital's Scale-up Direct Mandate providing a public-private bridge specifically designed to keep homegrown deeptech funded on the continent.
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