CoachThe imbalance volume of a BRP in a settlement period is its metered net injection minus its scheduled net injection: positive when it is long (delivered more than it sold), negative when short. The imbalance price is the price at which the grid operator settles it, derived from the cost of the balancing energy the operator activated in that period.
Examples
Example 6.4 (A wind farm’s afternoon)
A wind farm sells 80, 90, 100 and 100 MWh day-ahead for four hours at 62, 58, 55 and . Before the last hour its forecast falls by 30 MWh and it buys 30 back at intraday. It meters 82, 88, 101 and 55 MWh; the imbalance prices are 60, 75, 50 and . Its trading revenue is EUR 16 280 (the day-ahead sales less the buy-back), and its imbalances (, , and MWh) cost it EUR 3 580, nearly all in the last hour, when it was short while the system was short too: EUR 12 700 in all.