Germany will assume more than €600 million ($629 million) of debt that its development bank had extended to Northvolt for the construction of a battery plant in the country.
The federal government will reimburse lender KfW for the value of a convertible bond and related costs, although the total losses are yet to be determined.
Northvolt, Europe's battery start-up, filed for Chapter 11 bankruptcy last month after failing to secure short-term funding and facing production challenges.
The company needs to raise between $1 billion and $1.2 billion to restore its business and compete against Asian battery manufacturers.