Chubu Electric Overcharged About 5 Million Contracts, Totaling Around ¥1.2bn

This is a story about a system error and who pays for it. Chubu Electric admitted that a mistake in its generation-cost formula led it to overcharge about 5 million contracts since two years ago, totaling around ¥1.2bn. The numbers: 5 million contracts is a wide net, likely affecting many households and businesses in the Chubu region; ¥1.2bn spread across them may be small per contract but adds up to a large sum to refund and explain. For readers, it is a mirror: utility pricing transparency directly affects household wallets, and a single formula error can quietly overtake money from millions until it is caught—why utility oversight matters. Practically, those with power contracts in central Japan (lodging or storefronts) should watch the official refund scope and method to check if they are affected; others should take it as a reminder to review bills regularly. Watch the refund arrangements and whether the affected scope widens.