# Grid capacity for data centers in Zaragoza

> In Zaragoza, **9 of 244** distribution nodes (4%) publish available demand capacity, **152.7 MW** in total (August 2026, CNMC). **4** offer 10 MW or more and **3** offer 20 MW or more; the largest single node shows 42.3 MW.

Ampervia · Last checked 2026-10-12 · https://ampervia.com/data/spain-grid/zaragoza/

- **9 / 244** — nodes with demand capacity
- **3** — nodes ≥20 MW
- **152.7 MW** — available in total
- **14 / 51** — rank in Spain

| Measure | Zaragoza | Spain |
|---|---|---|
| Distribution nodes | 244 | 6,186 |
| Nodes with demand capacity | 9 | 816 |
| Nodes ≥10 MW | 4 | 200 |
| Nodes ≥20 MW | 3 | 104 |
| Available demand capacity (MW) | 152.7 | 7,078.1 |
| Largest node (MW) | 42.3 | — |
| Change in open nodes since June 2026 | +2 | -46 |
| Transmission nodes with demand capacity | 0 of 28 | 290 of 937 |

## What this means for a data center

3 nodes in Zaragoza publish 20 MW or more of demand capacity, enough in principle for a small data center (roughly 10–20 MW of grid capacity). Whether a specific request succeeds depends on the operator’s study, the site and the land.

Since March 2026, a Spanish demand access permit is tied to the CNAE activity code declared in the request ([RDL 7/2026](https://ampervia.com/rules/spain-rdl-7-2026-data-centers/)), so the request has to be filed as a data center from the start.

## Method

Source: the CNMC’s national access-capacity service, layers _Demanda en Distribución_ and _Demanda en Transporte_,
publication period August 2026, pulled by Ampervia on 2026-10-12. Comparison period: June 2026.


- **Distribution:** each node’s published _available capacity_ (CAP_DISPONIBLE, MW) for new demand, summed and counted by province.

- **Transmission:** a Red Eléctrica node is counted as showing demand capacity if any of its published demand categories is above zero.

- Province names are as published by the CNMC. Ampervia does not publish node or municipality detail.

- Published capacity is indicative and changes as permits are granted, lapse or are surrendered. Only the network operator can confirm capacity for a specific request.

## Sources

- [CNMC — national map of access capacity for demand (distribution and transmission layers)](https://www.cnmc.es/prensa/mapa-capacidad-transporte-20260213)
- [BOE — Real Decreto-ley 7/2026, de 20 de marzo (access permits and CNAE code)](https://www.boe.es/buscar/act.php?id=BOE-A-2026-6544)