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 32 minutes ago

Per-region freshness

Chubu

updated 32 minutes ago

Chugoku

updated 32 minutes ago

Hokkaido

updated 32 minutes ago

Hokuriku

updated 32 minutes ago

Kansai

updated 32 minutes ago

Kyushu

updated about 13 hours ago

≈ carbon estimated

Okinawa

updated 32 minutes ago

Shikoku

updated 32 minutes ago

Tohoku

updated 32 minutes ago

Tokyo

updated 32 minutes 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.