Lilium: an electric air-taxi pioneer that needed more money than investors would give
Lilium developed an electric jet that could take off vertically, for regional air-taxi flights. Development and certification costs ran into billions; after Germany declined to back a loan, it filed for insolvency in 2024, and a rescue deal collapsed in early 2025.
- Primary cause: Ran out of runway
- Technology didn't deliver
- Founded
- 2015
- Ended
- 2025
- Headquarters
- Germany
- Sector
- Mobility & EV
- Capital raised
- $1B+ before its 2021 SPAC
- Peak valuation
- ~$3.3B (2021 SPAC)
What happened
Filed for insolvency in October 2024, then again in February 2025 after a rescue investment failed to arrive.
What Lilium was
Founded in Munich in 2015 by Daniel Wiegand and colleagues, Lilium designed an aircraft powered by dozens of small electric ducted fans. It went public via SPAC in 2021 and announced provisional orders from airlines and operators.
Building and certifying a new kind of aircraft proved enormously expensive. In October 2024 Lilium filed for insolvency after the German government declined a loan guarantee. A planned €200 million rescue by an investor consortium never arrived, and it filed again in February 2025.
Why it failed
- 1
Certification costs and timelines
A new aircraft must meet strict safety rules, a process that takes years and vast sums before any revenue arrives.
- 2
Ambitious engineering choices
Lilium's ducted-fan jet was more technically ambitious than some rivals' designs, raising development risk and cost.
- 3
Dependence on new capital in a tough market
When SPAC-era enthusiasm faded and government support didn't materialize, Lilium couldn't fund its way to certification.
The product lesson
For deep-tech hardware, the capital plan is as important as the engineering plan. Match technical ambition to how much money you can realistically raise before revenue, and know which milestones unlock each next round.
Early warning sign to watch for
Reaching first revenue requires more capital than the company has ever raised, and depends on government support.
Compiled from public reporting, court records, and company statements. Figures are approximate. Where legal proceedings are mentioned, convictions are described as convictions and charges as allegations. Corrections welcome at hello@productmanagement.space.