JEPX — 日本卸電力取引所 ·
www.jepx.jp/Day-ahead spot (スポット市場) and national intraday (時間前市場) trading results, non-fossil certificate auction results (取引結果 CSV).
Terms: Public market data. JEPX asks that redistribution cite JEPX as the source; commercial reuse of bulk data is subject to JEPX's terms. Figures here are recomputed from the published CSVs; area intraday figures are derived (national spread applied to area day-ahead) and labelled as such. Links go to the JEPX top page only.
OCCTO & the nine general transmission operators (一般送配電事業者) ·
www.occto.or.jp/Area supply-demand actuals (エリア需給実績: demand, solar, wind, curtailment) in the OCCTO publication format.
Terms: Published for public use under each TSO's site terms; attribution to the TSO / OCCTO required.
Interconnector flows, operating capacity, margins and available transfer capacity (連系線潮流実績・空容量).
Terms: Public system information; bulk retrieval follows OCCTO's service terms; attribution required.
インバランス料金公表サイト (OCCTO / TSOs) ·
www.imbalanceprices-cs.jp/Official 30-minute area imbalance prices (shortage / surplus), 14 months of history.
Terms: Public price publication; attribution required.
EPRX — 電力需給調整力取引所 ·
www.eprx.or.jp/Balancing-capacity market results (取引実績) by product, 三次調整力② usage data, resource-type breakdown (電源種別別), ΔkW price caps.
Terms: Public data; commercial use requires an EPRX contract and automated bulk retrieval requires EPRX's prior consent — obtaining consent is the operator's responsibility.
METI — 経済産業省 / 資源エネルギー庁 ·
www.meti.go.jp/Press releases (Atom feed), FIT/FIP reference values, balancing-cost allowance, Strategic Energy Plan assumptions.
Terms: Government information under the METI site policy (reuse with attribution).
EGC — 電力・ガス取引監視等委員会 ·
www.emsc.meti.go.jp/Commission press releases and committee materials (market monitoring, imbalance pricing, retail rules).
Terms: Government information under the commission's site policy (reuse with attribution).
JEPX Pulse content. Charts, cards, derived series (capture rates, spreads, area intraday, BESS models, AI commentary) are produced by JEPX Pulse and may be shared with a link to jepx-pulse.com. They are for information only and are not investment advice; the AI commentary is generated and may contain errors.
Rounding. Prices are shown to 2 decimals (¥/kWh, ¥/ΔkW·30 min); volumes and capacities to 1–3 decimals (MWh, MW, GWh).
Operator controls. Feed refreshes, AI regeneration and reference-data edits are restricted to the site operator (admin key). Saved calculator scenarios belong to the browser that created them.