BESS simulation
Generation-side charge (発電側課金)
Charged since April 2024 on what a plant or battery feeds into the grid: per kW of grid-connection capacity per month, plus per kWh (storage is exempt from the kWh part). The same rates apply at every voltage; location discounts are not shown.
Generation-side (kW) (JPY/kW/mo)
Effective-date history. Each line holds its published rate until the next entered version; draft values have not yet been checked against the source page.Generation-side (kWh) (JPY/kWh)
Effective-date history. Each line holds its published rate until the next entered version; draft values have not yet been checked against the source page.Current rates by area
In force on 2026-11-11, with the next published change. Drafts are read from the tariff PDFs and not yet checked against the page.
| Area | Generation-side (kW) (JPY/kW/mo) | Generation-side (kWh) (JPY/kWh) | From | Next change | Status | Source |
|---|---|---|---|---|---|---|
| Hokkaido | 137.50 | 0.43 | 2026-11-01 | — | draft | hepco.co.jp · p. 76 |
| Tohoku | 109.37 | 0.33 | 2026-11-01 | — | draft | nw.tohoku-epco.co.jp · p. 61 |
| Tokyo | Not entered yet: the simulation uses METI's national average. | |||||
| Chubu | 95.61 | 0.31 | 2026-11-01 | — | draft | powergrid.chuden.co.jp · p. 112 |
| Hokuriku | 93.47 | 0.28 | 2026-10-01 | — | draft | rikuden.co.jp · p. 87 |
| Kansai | 116.23 | 0.37 | 2026-11-01 | — | draft | kansai-td.co.jp · p. 89 |
| Chugoku | 89.00 | 0.28 | 2026-11-01 | — | draft | energia.co.jp · p. 98 |
| Shikoku | 92.73 | 0.25 | 2026-10-01 | — | draft | yonden.co.jp · p. 69 |
| Kyushu | 98.56 | 0.26 | 2026-11-01 | — | draft | kyuden.co.jp · p. 104 |
| Okinawa | Not entered yet: the simulation uses METI's national average. | |||||
History
Every version, newest first. A new version is listed whenever the tariff was re-issued, even if a rate did not change.
| Area | From | Until | Generation-side (kW) (JPY/kW/mo) | Generation-side (kWh) (JPY/kWh) | Change (Generation-side (kW)) | Status | Source |
|---|---|---|---|---|---|---|---|
| Kyushu | 2026-11-01 | — | 98.56 | 0.26 | +15.8% | draft | kyuden.co.jp · p. 104 |
| Kyushu | 2026-10-01 | 2026-11-01 | 85.10 | 0.23 | — | draft | kyuden.co.jp · p. 104 |
| Kyushu | 2026-04-01 | 2026-10-01 | 85.10 | 0.23 | — | draft | kyuden.co.jp · p. 103 |
| Kyushu | 2025-04-01 | 2026-04-01 | — | 0.23 | — | draft | kyuden.co.jp · p. 103 |
| Kyushu | 2024-10-01 | 2025-04-01 | — | 0.23 | — | draft | kyuden.co.jp · p. 103 |
| Kyushu | 2024-04-01 | 2024-10-01 | — | 0.23 | — | draft | kyuden.co.jp · p. 95 |
| Shikoku | 2026-10-01 | — | 92.73 | 0.25 | — | draft | yonden.co.jp · p. 69 |
| Chugoku | 2026-11-01 | — | 89.00 | 0.28 | +4.7% | draft | energia.co.jp · p. 98 |
| Chugoku | 2026-10-01 | 2026-11-01 | 85.02 | 0.28 | — | draft | energia.co.jp · p. 98 |
| Chugoku | 2026-04-01 | 2026-10-01 | 85.02 | 0.28 | — | draft | energia.co.jp · p. 98 |
| Kansai | 2026-11-01 | — | 116.23 | 0.37 | +18.6% | draft | kansai-td.co.jp · p. 89 |
| Kansai | 2026-10-01 | 2026-11-01 | 97.98 | 0.32 | — | draft | kansai-td.co.jp · p. 89 |
| Kansai | 2026-04-01 | 2026-10-01 | 97.98 | 0.32 | — | draft | kansai-td.co.jp · p. 89 |
| Kansai | 2025-04-01 | 2026-04-01 | 97.98 | 0.32 | — | draft | kansai-td.co.jp · p. 88 |
| Kansai | 2024-10-01 | 2025-04-01 | 97.98 | 0.32 | — | draft | kansai-td.co.jp · p. 88 |
| Kansai | 2024-04-01 | 2024-10-01 | 97.98 | 0.32 | — | draft | kansai-td.co.jp · p. 79 |
| Hokuriku | 2026-10-01 | — | 93.47 | 0.28 | — | draft | rikuden.co.jp · p. 87 |
| Chubu | 2026-11-01 | — | 95.61 | 0.31 | +18.9% | draft | powergrid.chuden.co.jp · p. 112 |
| Chubu | 2026-10-01 | 2026-11-01 | 80.42 | 0.26 | — | draft | powergrid.chuden.co.jp · p. 112 |
| Tohoku | 2026-11-01 | — | 109.37 | 0.33 | +17.6% | draft | nw.tohoku-epco.co.jp · p. 61 |
| Tohoku | 2026-10-01 | 2026-11-01 | 93.04 | 0.29 | — | draft | nw.tohoku-epco.co.jp · p. 61 |
| Tohoku | 2026-04-01 | 2026-10-01 | 93.04 | 0.29 | — | draft | nw.tohoku-epco.co.jp · p. 61 |
| Hokkaido | 2026-11-01 | — | 137.50 | 0.43 | +25.0% | draft | hepco.co.jp · p. 76 |
| Hokkaido | 2026-10-01 | 2026-11-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 76 |
| Hokkaido | 2026-04-01 | 2026-10-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 75 |
| Hokkaido | 2025-10-01 | 2026-04-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 74 |
| Hokkaido | 2025-04-01 | 2025-10-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 74 |
| Hokkaido | 2024-10-01 | 2025-04-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 74 |
| Hokkaido | 2024-04-01 | 2024-10-01 | 110.00 | 0.35 | — | draft | hepco.co.jp · p. 68 |