Status
Operational battery cell plant in Seosan, South Chungcheong, South Korea
SK On battery cell plant in Seosan, South Chungcheong, South Korea. Products: cells. Anchor customer: Hyundai / Kia / Ford.
SK On primary Korean cell production; NMC pouch; Hyundai E-GMP and Ford Mustang Mach-E supply.
Semiconductor interface: Hyundai 800V SiC traction; Ford EV SiC module demand.
Plant record
Plant record
| Owner or operator | SK On |
| Plant | Seosan Cell Plant |
| Location | Seosan, South Chungcheong, South Korea |
| Region | Asia-Pacific |
| Owner home country | South Korea |
| Products | cells |
| Cell format | pouch |
| Cell chemistry | NMC |
| Capacity (GWh per year) | 20 |
| Capacity basis | legacy figure, not re-verified |
| Status | operational |
| Status checked 2025-2026 | no |
| Opened or target year | 2013 |
| Investment | $1.5 billion |
| Anchor customer | Hyundai / Kia / Ford |
| Strategic tier (1 highest) | 1 |
| China supply exposure | low |
| Record updated | 2026-10 |
Official site: skon.com
In context
Where it fits
Listed in Battery Cell Gigafactories.
| Plant | Location | Type | Status |
|---|---|---|---|
| Commerce Georgia Plant (SK On) | Commerce, Georgia, United States | battery cell plant | operational |
| Hungary Cell Plant (SK On) | Komarom, Komarom-Esztergom, Hungary | battery cell plant | operational |
| Hungary Plant 2 (SK On) | Ivancsa, Fejer, Hungary | battery cell plant | operational |
| Tennessee Battery Plant (BlueOval City, ex-BlueOval SK) (SK On) | Stanton, Tennessee, United States | battery cell plant | under construction |
| Plant | Location | Type | Status |
|---|---|---|---|
| Cheonan Cell Plant (Samsung SDI) | Cheonan, South Chungcheong, South Korea | battery cell plant | operational |
| Ochang Cell Plant (LG Energy Solution) | Ochang, North Chungcheong, South Korea | battery cell plant | operational |
Sources
Sources and scope
- Scope
- Seosan Cell Plant (SK On)
- Sources
- ElectronsX gigafactory dataset; company releases and trade press
- Updated
- 2026-10