Toyota is developing sulfide all-solid-state batteries for its electric vehicles, with Idemitsu Kosan supplying the solid electrolyte. In January 2026 Idemitsu said it would build a pilot solid-electrolyte plant for Toyota, with production targeted for 2027 to 2028.
At a glance
| Price from | Not public |
| Best for | Drivers waiting for solid-state Toyota and Lexus models |
From Toyota's own website.
What stands out
- Large patent portfolio in solid-state cells
- Secured electrolyte supply through Idemitsu
Worth knowing
- Batteries are for Toyota's own vehicles
- No cars on sale with them yet
How it ranks
Toyota is ranked 2nd of 10 in Best Solid-State Battery Companies (Lister Score 95.9).
#2 in Best Solid-State Battery Companies · Lister Score 95.9
Idemitsu announced a pilot solid-electrolyte plant for Toyota's EV batteries in January 2026..
| Rank | Best Solid-State Battery Companies | Score |
|---|---|---|
| 1 | QuantumScape | 97.0 |
| 2 | Toyota | 95.9 |
| 3 | Samsung SDI | 94.6 |
| 4 | Factorial Energy | 93.3 |
| 5 | Solid Power | 92.0 |
| 6 | ProLogium | 90.6 |
| 7 | CATL | 89.2 |
| 8 | Blue Solutions | 87.8 |
| 9 | Ilika | 86.3 |
| 10 | Ion Storage Systems | 85.0 |
Frequently asked questions
How does Toyota rank on Lister?
Toyota is ranked 2nd of 10 in Best Solid-State Battery Companies (Lister Score 95.9).
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