| # | Plant | Fuel | Country | MW |
|---|---|---|---|---|
| 1 | Kamaishi Works power station | Coal | Japan | 149 |
| 2 | Kakkonda | Geothermal | Japan | 80 |
| 3 | Maeda-Ofunato power station | Biomass | Japan | 75 |
| 4 | Yamada-Cho | Solar | Japan | 33 |
| 5 | Shizukuishi | Solar | Japan | 25 |
| 6 | Matsukawa Geothermal | Geothermal | Japan | 24 |
| 7 | Ichinoseki GPC | Solar | Japan | 22 |
| 8 | Ichinoseki GPSC | Solar | Japan | 21 |
| 9 | Ofunato Solar Power Plant | Solar | Japan | 20 |
| 10 | Oshu | Solar | Japan | 15 |
| 11 | Hiraizumi | Solar | Japan | 13 |
| 12 | Hanaizumi | Solar | Japan | 11 |
| 13 | Higashiyama Solar Power Plant | Solar | Japan | 2 |
| 14 | Matsukawa Solar Power Plant | Solar | Japan | 1 |
Method: ranked from open data — capacity & fuel from WRI Global Power Plant Database (CC BY 4.0); CO₂ measured for US EPA GHGRP / EU ETS records and modelled for Climate TRACE records. Sorted server-side; click any column to re-sort. Company-level data only.
Kamaishi Works power station (Japan) ranks #1 with 149 mw.
This ranking covers 14 power plants in in Iwate, Japan.
1. Kamaishi Works power station (149); 2. Kakkonda (80); 3. Maeda-Ofunato power station (75).