Battery storage by prefecture

Where Japan's grid-scale battery projects are, summarised by prefecture. Free to use; project names and sites stay in the registry.

Map of disclosed capacity

Disclosed capacity (MW)025100250500+Projects, but no MW reported yetNo projectsSelect a prefecture to open its projects.

Hokkaido北海道

Stage mix (projects)OperatingConstructionPlannedMW reported for 31 of 31 projectsOpen projects →

OperatingConstructionPlanned

Prefecture	Projects	MW	MWh
Hokkaido	31	745	2,369
Shizuoka	23	473	1,527
Fukushima	12	426	1,681
Fukuoka	31	381	1,537
Oita	12	253	912
Shiga	10	198	793
Okayama	11	197	760
Tochigi	18	172	683
Hyogo	13	157	624
Yamagata	4	154	634
Kumamoto	19	135	498
Nagano	15	118	431
Saitama	27	117	434
Osaka	3	112	427
Kanagawa	5	111	479
Miyagi	10	82	275
Ibaraki	6	79	274
Niigata	7	77	342
Gunma	20	68	271
Kyoto	10	67	278
Yamaguchi	9	62	203
Mie	12	61	248
Wakayama	6	58	153
Hiroshima	6	55	196
Toyama	2	52	223
Fukui	2	52	208
Miyazaki	9	46	186
Gifu	13	44	177
Nagasaki	5	37	152
Kagoshima	9	31	122
Saga	10	30	118
Chiba	13	22	82
Aichi	11	21	84
Iwate	4	20	83
Shimane	8	18	73
Tottori	7	14	58
Ehime	1	12	36
Okinawa	1	10	15
Tokushima	4	8	20
Akita	3	6	24
Aomori	2	4	16
Ishikawa	2	4	12
Tokyo	1	2	8
Yamanashi	1	2	8
Kagawa	1	2	8
Prefecture not yet known	16	257	852
Japan	445	5,053	18,593

Totals count every published project in the registry. MW and MWh add up only the projects that report them, so they are lower bounds.
A project listed under several prefectures is counted once, on its own line, so the map adds up to the national total.