What happens if I run out of electricity points?

Payment will be made with the credit card you registered when you signed up with Minna Denryoku.
You can check your registered credit card by following the steps below.
Access Minna Denryoku MyPage (https://portal.minden.co.jp) and log in. Click ""MENU"" on the top right of the top page.
Click ""Confirm/change credit card"" under ""Payment information"" at the bottom of the page.