Does Blue Current Energy's dynamic energy price change every quarter hour or every hour?

Starting October 1, dynamic prices will change every quarter hour, resulting in 96 price changes per day. These will also be billed every quarter hour. For the sake of user-friendliness, we show an average hourly price in the app. 96 quarter hours are too many to fit on one screen. For the same reason, we also show consumption per hour. The consumption costs are calculated per quarter hour and displayed per hour.