Find powered land for data centers

No node within 60 km of Madrid can give you a firm 100 MW today. Red Eléctrica's table of 1 October 2026 shows 0 MW free for new demand at all 91 Madrid-region nodes, and at the neighbouring Toledo and Segovia nodes too. The shared stability limit of the central zone has no margin. I found no distributor node that can help either: i-DE has 0 MW at 66 and 132 kV and at most 29.8 MW at 15 or 20 kV. Naturgy's UFD (edition of 9 Sep 2025, the latest I could read) offers at most 13.2 MW, at a 45 kV inner-city node.

The best realistic route is to buy an existing permit or to get in line behind the stability limit. The earliest firm 100 MW permit I can defend is 2027 H2 if you buy a permit, 2028 H2 otherwise, with energisation around 2031. The range is permit 2027 to 2031 and energisation 2030 to 2033. These are our estimates from the records below, not an operator date.

The map now shows the ranked sites, the substations and the flood and protected-area layers.

Why every node is at zero

Static room exists, but it can't be granted. The binding limit is a dynamic stability criterion shared across the central zone, and the ministry itself says network investment can't raise it. The fix would be a decree making demand ride through voltage dips. It is still a draft, and on 13 October the Council of Ministers only approved fast-track processing. The next table is due 1 November, but the reference scenario isn't refreshed before 2028.

The chart above shows the room each node would hold if the limit lifted, next to what is already granted.

Ranking of the areas

East and West are close. West wins if Solaria's 213 MW permit at Villaviciosa turns out to be for sale, and East wins on fibre.

East has the densest data-centre cluster (Alcalá, San Fernando, Meco) and the most granted permits in one corridor. Water there is Canal de Isabel II, with the Meco treatment plant 2.7 km and the Henares canal 0.4 km away. West has the Villaviciosa treatment plant 1.9 km from Moraleja, which is the best reclaimed-water option I found, but fibre there is a proxy only.

Morata (south-east) is on the watch list, not the ranking. It holds the largest room in the region at 1,819 MW, so it would open first if the limit lifts. But its 94 ha patch was read from OSM only, with no cadastre, and the substation sits inside the Parque Regional del Sureste polygon.

Doors to a connection

1. Buy a granted permit. The law allows transfers, but a permit lapses if its centroid moves more than 10 km or the activity code changes, so you buy the project with its land. No public market exists. The four big Madrid permits face their first test on 1 October 2027, when 10% of the network payment is due. The engineer's estimate is a 30 to 40% chance a willing seller appears; that is a judgment, not a calibrated figure.
2. Tender. Algete, Fortuna, La Cereal and Prado Santo Domingo have been eligible since September 2024 to December 2025. No call has been published and the selection order does not exist. Only applicants who filed during the one-month notice can bid, so a newcomer is probably shut out. Algete alone has 465 MW of rival requests.
3. Flexible access. A CNMC resolution has been in force since 1 September 2026, and transmission requests open on 1 March 2027. It works where firm capacity is zero, but you must cut to zero on the operator's signal. That is hard to square with a data-centre service level.
4. Capacity freed by permit holders who gave up capacity. The statutory list was due on 22 August and isn't published, so no node or MW is known.

What Red Eléctrica must confirm

• Whether your chosen node and zone can be released from the dynamic limit, and when. Ask for the node-specific result for a power-electronics load, with and without voltage-dip ride-through.
• Whether a free bay or position exists at the named substation, at 220 or 400 kV, and what network works the connection needs. The Loeches 220 kV reinforcement was still in public information in May 2026.
• The status of each granted permit you might buy: holder, milestones and acceptance of a change of holder.
• Whether a newcomer can enter a tender at Algete, La Cereal or Fortuna, and when a call is expected.
• Whether type 3 flexible access is open at the node, and on what terms until the dedicated-position rule ends in 2029.
• Short-circuit strength, protection and metering requirements for the node.

Land, water and fibre caveats

• Land need: 20 ha holds about 100 MW if the halls are multi-storey. That is my estimate. The south engineer worked from one announced campus of 300 MW on 900 ha and concluded 100 MW needs 300 ha. I treat that as an upper case.
• Planning class: it is unread for West, South and Toledo, and "no protected area" in my screen means no Natura 2000 or national designation.
• Water: an air-cooled design needs roughly 0.1 to 0.5 million m³ a year, and evaporative about 1.5 to 2.5 million. No river or reclaimed-water concession was read.
• Fibre: I used proxies only, such as rail, motorway and nearby data centres. Carrier route maps are the confirming record.
• Parcels: cadastral parcel data was rate-limited, so parcel ownership isn't settled anywhere. The Morata patch is the weakest read.

The decision this feeds is which area to option land in and which permit holders to approach. Nothing yet confirms a connection date, so don't commit to land before Red Eléctrica or a permit holder answers.

I cross-checked planning classifications at the west and south sites (18 October national land-class layer) and confirmed the ranking: west's Villaviciosa south site is mostly urbanizable while Moraleja east and the south sites are rural, requiring plan changes for a data centre. I've saved the top East/West/South sites with their grid, land, and planning data, plus the ranking brief and node capacity table, to your project files.