EV Supply Chain > Gigafactories > Battery Cell Gigafactories > SK On Seosan Cell Plant
SK On Seosan Cell Plant
[Last updated: Apr 2026]
This battery cell gigafactory is part of the advanced manufacturing and industrial electrification ecosystem.
| OEM/owner: | SK On |
| Facility: | Seosan Cell Plant |
| Location: | Seosan South Chungcheong |
| Country: | South Korea |
| Tier level: | 1 |
| Capacity: | 20 GWh |
| Cell chemistry: | NMC |
| Format: | Pouch Cells |
| Other product: | Battery |
| Status: | Operational |
| Opened: | 2013 |
| Investment: | $1.50B USD |
| Anchor customer: | Hyundai / Kia / Ford |
| Other customer: | Geo risk: | LOW |
Supply chain notes:
SK On primary Korean cell production; NMC pouch; Hyundai E-GMP and Ford Mustang Mach-E supply..
Semiconductor relevant notes:
Hyundai 800V SiC traction; Ford EV SiC module demand.
Location map - Driving directions
EV battery cell gigafactories are large-scale industrial production facilities that include cell manufacturing, automation, and high-throughput logistics. These facilities impose significant electrical load, thermal management, and site electrification requirements, and serve as anchor nodes within regional supply chains and energy infrastructure.