2026-11-12
Kyushu Electric Power Transmission and Distribution unauthorized access (4,139 electricity usage records): usage and sales volumes and supply point numbers may have leaked — what customers should do
On November 5, 2026, Kyushu Electric Power Transmission and Distribution announced that unauthorized access to its system may have leaked part of the electricity data it holds (4,139 records) outside the company. It detected an unnatural error on October 30, investigated, found a possible unauthorized access, and urgently stopped the system. A server log investigation showed that information may have leaked. The information that may have leaked is: electricity usage (monthly values and 30-minute values) with the demand-side supply point identification number, and electricity sold (monthly values and 30-minute values) with the generation-side receiving point identification number. Contract information such as customer names, addresses, phone numbers, email addresses and bank account information is not included, the company says. It reported to the Personal Information Protection Commission and the supervising authority on November 2, and plans to notify affected customers individually around mid-November under the Act on the Protection of Personal Information. The Electricity Usage and Charge Inquiry web service, for customers on remote islands and registered members who sell electricity to the company on mainland Kyushu, is stopped, and no restoration date has been set. The company says the stable supply of electricity is not affected. As of November 12, 2026, we have found no follow-up. Our conclusion: because contact details are not included, wait for the individual notice and be ready for fake notices and for calls that use the supply point number to push a contract switch.