01Price formation
A new price every fifteen minutes.
European power is traded in 15-minute periods, and each has its own price in each bidding zone. The shape of a day follows demand, weather and the grid: low at night, a morning ramp, a midday dip when solar output peaks, and an evening peak as the sun sets.
The more wind and solar on the system, the steeper and less predictable that shape becomes, and the more value there is in forecasting it well.