ProofPrice

What do the official wholesale electricity prices say for Japan in Japan?

Wholesale electricity prices in Japan, from Japan Electric Power Exchange. Figures as of 29 October 2026. Wholesale day-ahead electricity in Japan on 2026-10-29: median 29.29 yen/kWh, typical half-hours between 10.61 and 35.87 yen/kWh (system price). Not a household price. Based on 48 records from Japan Electric Power Exchange (JEPX) (2026-10-29 to 2026-10-29). Confidence: medium.

Prices recorded in official records of completed sales. Asking prices are never used.

JP¥29.29 per kWh, median

Wholesale day-ahead electricity in Japan on 2026-10-29: median 29.29 yen/kWh, typical half-hours between 10.61 and 35.87 yen/kWh (system price). Not a household price. Based on 48 records from Japan Electric Power Exchange (JEPX) (2026-10-29 to 2026-10-29). Confidence: medium.

Period
2026-10-29 to 2026-10-29
Kind of figure
The median of recorded prices, with the typical range from the 10th to the 90th percentile.
Typical range (10th to 90th percentile)
JP¥10.61 to JP¥35.87
Records behind it
48
Confidence
medium

Source: Japan Electric Power Exchange. Licence: JEPX 'Disclaimer and copyright' page. Live answer: /api/v1/wholesale-power?country=JP

Where this comes from

Source
JEPX day-ahead spot market price, published by Japan Electric Power Exchange (JEPX)
Licence
JEPX 'Disclaimer and copyright' page: copyright in the site content belongs to JEPX and 'when you use it, state the source' (当ウェブサイトに掲載されている内容に関する著作権は本所にあります。利用する場合は、出所を明示した上でご利用下さい。). No named open licence and no commercial wording, so this source is served free of charge only.
Attribution
出所：一般社団法人日本卸電力取引所（JEPX） / Source: Japan Electric Power Exchange (JEPX), day-ahead spot market results, https://www.jepx.jp. Medians, ranges and counts are own calculations by ProofPrice from the published prices; JEPX is not responsible for them.
Figures as of
. This page is rebuilt when the daily price library is deployed.
How fresh the source is
JEPX rewrites its file every day; ProofPrice copies it once a day and answers with the newest complete delivery day it holds (usually yesterday, Japan time)
Limits
Wholesale exchange prices in yen per kWh, not retail: a household or business bill adds grid fees, levies, taxes and supplier margin. Day-ahead spot only (not intraday or futures). The record count is half-hours (48 a day), not separate trades. Prices are copied from JEPX's file once a day; JEPX may change or withdraw published data without notice and gives no accuracy guarantee.
Rule
A figure built from records is shown only when at least 5 records sit behind it; official statistics are shown as such, with their reference period. See how we earn trust and the method.

Ask your AI

Add the ProofPrice MCP server (https://proofprice.com/api/mcp) to your AI app, then paste this. Not connected yet? See how to connect.

Using the ProofPrice MCP server (pricepaid_wholesale_power_prices): What do the official wholesale electricity prices say for Japan in Japan? Give the figure with its unit, the period it covers, the number of records where the source states one, and cite the source and licence.

Use it in code

More

Information, not a valuation or offer. Ranges describe past recorded prices.