The timeline charts solid-state battery progress from TRL5 lab demos in 2024 to TRL7 prototypes by Toyota and QuantumScape in 2027, TRL9 scale-up readiness in 2030, and commercial deployment exceeding 500 Wh/kg by 2035. It highlights the promise of advancing from lab validation to high-energy-density reality.
Solid-State Batteries – Promise and Reality
2024: TRL5 Lab Demos Lab demonstrations of solid-state batteries reach Technology Readiness Level 5. 2027: TRL7 Prototypes Toyota and QuantumScape prototypes validate performance in real-world conditions. 2030: TRL9 Scale-Up Full-scale production readiness achieved for solid-state battery manufacturing. 2035: >500 Wh/kg Commercial Commercial deployment exceeds 500 Wh/kg energy density milestone.
Source: Toyota, QuantumScape