Fusebox

Founded in 2013, Fusebox is a private company headquartered in Tallinn, Estonia with approximately 51-200 employees specializing in Energy Storage.

Fusebox is an operations backbone for energy flexibility management. The company provides Fusebox OS, a hardware-agnostic, modular operating system designed to control, aggregate, and scale distributed energy resources (DERs) and virtual power plants (VPPs) across multiple markets. The platform unifies energy control, portfolio orchestration, and market workflows without requiring replacement of existing hardware or systems. Fusebox OS enables operators to manage diverse assets including solar PV, wind, battery storage, and flexible loads through standardized real-time control and TSO-compliant bidding. The company operates through 9 TSO integrations across 14 European countries.