Spain is benchmarked. Here is why it is not live yet.
Spain runs clean on the worker. It is also the heaviest domain we have benchmarked - which is exactly why it is waiting for its own release rather than slotting into the batch.
Spain is benchmarked. The domain runs, the output is clean, the configuration is sat in the repo ready to go. It is also not on the API, not on the schedule, and not promoted anywhere - and the reason is worth explaining, because it is the same reason the project has a roadmap at all rather than just switching on every country at once.
The reason is compute. The mainland-and-Balearics domain benchmarks at around one hour fifty end-to-end, with the WRF integration alone taking about one hour forty. For comparison, Slovenia runs in about 9 minutes, Czechia 19, Austria 23, and even Germany - the heaviest live country - lands in around 54. Spain on its own runs about as long as the entire rest of the European batch combined, and far heavier than any single country in it. That is not a problem with the domain; it is just a big, high-terrain country with a lot of cells.
The live setup runs all six countries sequentially through one batch per forecast cycle. Dropping a near-two-hour domain into that sequence would blow the cycle window - the whole point of the four-cycle-a-day cadence is that the 06z forecast lands before late morning, and a single country that doubles the batch length breaks that for everyone. So Spain is not a 'next country in the batch' decision. It is a 'second worker, or its own release slot' decision, and that is the call being deferred until the high-resolution work forces the second-worker question anyway.
There is a second Spanish domain too. The Canaries do not fit in the mainland rectangle - they are most of a thousand kilometres out into the Atlantic - so they run as a separate small domain, about 16 minutes a cycle, on `Atlantic/Canary` local time. That one is cheap, but it ships with the mainland rather than ahead of it, so the Spanish coverage story is told once rather than in two confusing halves.
The plan, in order: stabilise the 4 km base, stand up a second heavier worker for the 2 km UK work, and once that worker exists, Spain gets a clean slot that does not crowd anyone out. After Spain the candidates are Poland, which benchmarks around 42 minutes and would slot into the existing batch easily, France, which is heavy like Spain at nearly two hours, and Italy.
For the record, the mainland box runs roughly 10.2 W to 5.0 E and 35.3 N to 44.4 N, buffered into Portugal, Andorra, southern France and Morocco. Spain matters for soaring out of all proportion to how often it gets mentioned in a UK-centric sport: enormous flatland cross-country in the central meseta, the Pyrenees in the north, and a season that runs when the rest of Europe has packed the gliders away. It is coming. It is just not jumping the queue ahead of the infrastructure that lets it run without breaking everything else. If you fly Spanish XC and want it prioritised, the waitlist on the coverage page is the signal I use.