No permitted battery capacity remains in any zone
NESO rations connections against the Clean Power 2030 targets by calculating a permitted capacity per technology per zone. Queue formation allocated all of the battery allowance. The remaining column, which is NESO's own figure for what is available in future gated application windows, reads zero in all nineteen zones.
For comparison, at the same moment low carbon dispatchable power keeps 7,821 MW, onshore wind 5,101 MW, offshore wind 1,137 MW, solar 417 MW and long duration storage 162 MW. Battery is the only technology with nothing left anywhere.
Two zones may be different, and the published table does not say which reading is right
The technical principles state that capacity moved during rebalancing does not endure. A zone that received capacity has to fall back below its original ceiling before anyone new can join. A zone that donated capacity has not reached its original ceiling, so new projects can apply there.
For battery there were exactly two shifts and no substitutions. T3 donated 457.6 MW to T2, and D5 donated 127.2 MW to D6. The published remaining table reports zero for T3 and D5 as well. Either it is stated against the adjusted ceiling, in which case 585 MW is contestable now, or against the original ceiling, in which case there is no open door at all. The two readings differ by the whole answer to whether a new project can apply today.
This is the one item in the tool that is unresolved on the face of the published data, and it is a question for NESO rather than an inference anyone should make.
What it means in practice
If there is no permitted capacity, the only way into the queue is through a position somebody else gives up. That is why the tool does not ask where to build. It asks which positions will fail, when, and at which substation the capacity comes back.