Skipedia measures the cost of out-of-merit dispatch in the GB balancing mechanism. For each settlement period, we compare actual costs with what would have been paid if the cheapest available units dispatched first. The excess is attributed to each skipped unit proportionally.

Battery storage units are disproportionately affected, accounting for around a third of all skip costs despite offering competitive prices. Batteries are skipped significantly more often than comparable CCGT units, with the gap widest in northern regions where network constraints are tightest.