JEPX (Japan Electric Power Exchange) is the primary marketplace for wholesale electricity trading in Japan, providing a transparent and organized platform for spot, forward, and balancing markets. JEPX plays a pivotal role in facilitating efficient price discovery, system balancing, and competition among power generators, retailers, and large consumers. Its market data is a vital resource for industry participants, policymakers, and analysts monitoring electricity supply, demand, and price trends within Japan’s evolving energy landscape.

The JEPX data suite includes live and historical price information, trading volumes, market clearing results, and system demand metrics. Users have access to detailed insights into supply-demand balances, generation mix, and transaction data, enabling robust analysis for risk management, forecasting, and regulatory compliance across the Japanese power market.

JEPX market data is accessible through ICE Connect, which offers users intuitive dashboards, advanced analytics, and customizable reporting tools to monitor price movements and trading activity. For organizations that require direct integration or large-scale data processing, JPEX datasets are also distributed via ICE’s API and bulk file services, making it easy to incorporate up-to-date electricity market intelligence into internal risk management, trading platforms, and research workflows.

Specifications

Geographical Coverage
Asia Pacific
History
Since 2020
Data Frequency
Real-Time Daily
Data Quality
Real-Time | Delayed | Historical
Delivery Mechanism
ICE Connect | ICE Data API

Key Features


  • Comprehensive coverage of Japan’s electricity market, with trading volumes steadily growing to approximately 40% of generation supply since liberalization in 2016.
  • Spot (Day-Ahead) and Intraday prices available for the entire system and nine regional markets including Hokkaido, Tohoku, Tokyo, Chubu, Hokuriku, Kansai, Chugoku, Shikoku, and Kyushu, priced in JPY/KWH.
  • System price representing a single, uniform price across Japan’s electricity market, and location prices specific to individual regions.
  • Market data supporting price discovery, trading strategies, and regional market analysis.
  • Historical and real-time price data enabling risk management, forecasting, and operational decision-making.
  • Data delivery through ICE Connect and ICE XL for interactive visualization and Excel workflows, combined with ICE’s API and bulk file services for seamless enterprise integration.
  • Quality of service: This data set is delivered via our robust API, ensuring seamless integration and real-time access to market data.

Products


ICE Data API

Buy-side and sell-side front offices continue to embrace more data and more technology in order to expand their opportunities and gain an edge over the competition. Enrich front office systems with ICE’s Data API solution, providing intraday access to fixed income pricing, on-demand analytics, reference data and more.

ICE Connect

ICE Connect brings together access to cutting-edge trading tools with real-time cross-asset data, global news, and analytics all on one platform. Whatever your role, our platform can be tailored to your workflow for optimal efficiency.

Interested In learning more about
Japanese Electric Power Exchange (JEPX)?