Auction block
A fifteen-minute window in which your surplus is listed, bid on, and settled. There are ninety-six a day.
The market clears every fifteen minutes. In each block your surplus is listed at your floor, buyers bid for about fourteen minutes, and the highest bid wins. The sale is logged with the buyer, the kWh and the price.
Ninety-six blocks a day means ninety-six chances to sell, and you do not need to watch any of them.