Panasonic Energy Wakayama Cell Plant: Battery cell plant in Japan

Status

Operational battery cell plant in Wakayama, Japan

Panasonic Energy battery cell plant in Wakayama, Japan. Products: cells. Anchor customer: Toyota / Honda.

Japanese domestic cell production; NCA and NMC for Japanese OEM supply; 2170 format; feeds Toyota and Honda EV programs.

Semiconductor interface: Japanese OEM SiC inverter supply chain; NCA cathode chemistry.

Plant record

Wakayama Cell Plant (Panasonic Energy)
Owner or operator	Panasonic Energy
Plant	Wakayama Cell Plant
Location	Wakayama, Japan
Region	Asia-Pacific
Owner home country	Japan
Products	cells
Cell format	cylindrical 2170
Cell chemistry	NCA, NMC
Capacity (GWh per year)	10
Capacity basis	legacy figure, not re-verified
Status	operational
Status checked 2025-2026	no
Opened or target year	2019
Investment	$1.5 billion
Anchor customer	Toyota / Honda
Strategic tier (1 highest)	1
China supply exposure	low
Record updated	2026-10

In context

Other plants of Panasonic Energy
Plant	Location	Type	Status
Gigafactory Nevada (cells for Tesla) (Panasonic Energy)	Sparks, Nevada, United States	battery cell plant	operational
Hyogo Cell Plant (Panasonic Energy)	Himeji, Hyogo, Japan	battery cell plant	operational
Osaka Cell Plant (Panasonic Energy)	Osaka, Japan	battery cell plant	operational
Tokushima Cell Plant (Panasonic Energy)	Tokushima, Japan	battery cell plant	operational
De Soto Kansas Gigafactory (Panasonic Energy)	De Soto, Kansas, United States	battery cell plant	ramping
Oklahoma Announced Plant (Panasonic Energy)	TBD, Oklahoma, United States	battery cell plant	cancelled

Other battery cell plants in Japan
Plant	Location	Type	Status
Fukuoka Solid-State Pilot (Toyota)	Fukuoka, Japan	battery cell plant	operational
Himeji Cell Plant (Prime Planet Energy & Solutions)	Himeji, Hyogo, Japan	battery cell plant	operational

Sources