❓ What is changing?
Between September 25 and 29, 2026, Japan's Ministry of Economy, Trade and Industry (METI) accepted filings from nine designated retail electricity companies to revise their specified retail supply terms. The nine are Hokkaido Electric Power, Tohoku Electric Power, TEPCO Energy Partner, Chubu Electric Power Miraiz, Kansai Electric Power, Chugoku Electric Power, Shikoku Electric Power, Kyushu Electric Power and Okinawa Electric Power. Specified retail supply terms are the rules covering the so-called regulated rate menus that have continued since before full retail liberalization; they are filed under Article 19, paragraph 4 of the pre-amendment Electricity Business Act, which remains effective through the supplementary provisions of Act No. 72 of 2014. The revisions follow changes to the wheeling service terms filed by nine general transmission and distribution utilities on August 24 and September 11, 2026. When the cost of using the grid that delivers power to homes is revised, that revision flows through to retail pricing, and this filing is the retail-side step in that sequence. METI also notes that Chubu Electric Power Miraiz and Kansai Electric Power set their rates after correcting costs that had been miscalculated in terms filed on February 6, 2024. Along with the filings, documents on company-set standards under the rate calculation rules and on how consumption tax amounts are displayed and billed were published.
💡 Key points to know
1First check your meter-reading slip, invoice or online account for the company name and plan name (for example Juryo Dento B) you are contracted under
2Compare the unit prices you pay now against the specified retail supply terms and rate tables published on each company's official website
3METI's page publishes each of the nine companies' filings as attachments, along with filings of company-set standards under the rate calculation rules
4A document explaining how consumption tax amounts are displayed and billed is published at the same time, so tax-inclusive pricing can be checked there
5These revisions follow changes to the wheeling service terms filed by general transmission and distribution utilities on August 24 and September 11, 2026
6Chubu Electric Miraiz and Kansai Electric set their rates after correcting costs that had been miscalculated in the filing dated February 6, 2024
7For questions about the system itself, contact the Agency for Natural Resources and Energy, Electricity Industry and Market Office (03-3501-1511, ext. 4741–6); for your individual bill, contact your own utility