System status

Live, sourced, monitored.

The real public data behind the app — refreshed through the day, watched continuously, and labelled honestly.

All systems operational · updated about 2 hours ago

Per-region freshness

Chubu

updated about 2 hours ago

Chugoku

updated about 2 hours ago

Hokkaido

updated about 2 hours ago

Hokuriku

updated about 2 hours ago

Kansai

updated about 2 hours ago

Kyushu

updated about 2 hours ago

≈ carbon estimated

Okinawa

updated about 2 hours ago

Shikoku

updated about 2 hours ago

Tohoku

updated about 2 hours ago

Tokyo

updated about 2 hours ago

grid regions

30-min

resolution

Carbon + price

per slot

feeds monitored

883

days of history

Sources, continuously monitored

JEPX Day-ahead spot prices

Regional TSOs Generation mix → carbon intensity (9 areas)

e-Stat Household energy benchmarks (CC BY 4.0)

Spot prices (JEPX) 1/1

Carbon · generation mix 10/10

Carbon forecasts 10/10

Fuel-cost adjustments (燃調) 13/13

Household benchmarks 1/1

Supporting feeds 1/1

36 data feeds watched every day and all operational — a broken feed is auto-detected and self-heals; carbon is labelled ≈ where a region publishes no live fuel split (Kyushu).

Recent feed events

12 Jun 2026 · ENEOS fuel adjustment (燃料費調整単価) recovered

12 Jun 2026 · Osaka Gas fuel adjustment (燃料費調整単価) recovered

12 Jun 2026 · Tokyo Gas fuel adjustment (燃料費調整単価) recovered

11 Jun 2026 · Chugoku carbon forecast (eria_yosoku) recovered

11 Jun 2026 · Kansai carbon forecast (eria_yosoku) recovered

Tariff library

plans served

retailers

燃調 tables current

A plan is served only after its rates are verified against the provider's published price table (料金表) — last verification 12 Jun 2026. Fuel-cost adjustments (燃料費調整) are refreshed monthly — current for June 2026; renewable surcharge set for FY2026.

Data: JEPX, the regional transmission operators, and e-Stat (政府統計, CC BY 4.0). This is per-region public data — never per-user; your own usage stays on your device.