Energy

Iberia Announced 10 Gigawatts and Can Wire Four

Iberia has announced 10.5 GW of data-centre power but only 4.5 GW is real, says CBRE. The bottleneck is grid connection, not renewables. What buyers should diligence.

EnergyBy Servola Tech Desk2026-07-173 min read

AI-assisted, edited by humans. | Editor-in-Chief: Leon Soliman | Editorial standards

Iberia Announced 10 Gigawatts and Can Wire Four

Key takeaways

Spain and Portugal have announced about 10.5 gigawatts of data-centre power capacity but only about 4.5 gigawatts is actually deliverable, according to CBRE, so treat announced megawatts as marketing and a firm grid-connection point as the only asset that matters.
The bottleneck is grid connection and permitting, not generation. Iberia has abundant cheap renewables, yet connection queues, substation limits and network reinforcement around hubs like Madrid gate when capacity comes online.
Spain is planning about 13.59 billion euros of grid investment by 2030 to serve high-demand users, which is the real timetable to track because it, not solar output, decides delivery dates.
The European Data Centre Association warns Europe may miss its plan to triple data-centre capacity by 2035, so the announced-versus-deliverable gap in Iberia is a warning for every market chasing AI compute.

The announced number is more than twice the real one

Bloomberg reported on 17 July 2026 that the Iberian data-centre boom is running into an electrical-grid wall, drawing on a new report from the real-estate consultancy CBRE. Of roughly 10.5 gigawatts of capacity announced across Spain and Portugal, only about 4.5 gigawatts is classed as active, meaning tied to a real project with institutional capital and the ability to build.

That gap is not rounding. It means about 57 percent of the headline pipeline is uncertain. For a buyer reading press releases about new Iberian campuses, the practical lesson is that the announced megawatt figure describes ambition, not supply.

Cheap renewables do not fix a connection queue

The constraint is the grid, not the power. Iberia has some of the cheapest renewable electricity in Europe, but the queues to connect, the limits on substation capacity and the network-reinforcement work needed around hubs such as Madrid are what decide whether a site ever energises.

You can build next to a solar farm and still wait years for an interconnection. The scarce input has flipped from generation to permission, and a power-purchase agreement means little without a firm connection date behind it.

Follow the 13.59 billion euro grid plan, not the solar map

Spain is planning about 13.59 billion euros of grid investment by 2030 to serve high-demand users, and that programme is the real timetable for when Iberian capacity arrives. Reinforcement schedules and connection-point allocations, not renewable build-out, set the delivery dates that matter to an operator.

An owner tracking Iberia should follow the network plan and the interconnection queue the way they would once have watched land and power prices. That is where the binding constraint now lives.

Europe's 2035 target is exposed by the same gap

The European Data Centre Association, in its State of European Data Centres 2026 report, warns that limited energy access is blocking many investments and that Europe risks being unable to triple its data-centre capacity by 2035 as planned. Southern Europe is the fastest-growing region, helped by new subsea cables and cloud expansion, yet the same grid ceiling caps it.

Iberia is simply where the announced-versus-deliverable gap shows up most sharply. Any European market now chasing AI compute should expect the same reveal: the pipeline looks larger than the grid can carry.

What a buyer should diligence before signing

Diligence the connection, not the campaign. Before committing to colocation or a compute contract in Spain or Portugal, verify the grid-connection status, the queue position and the firm energisation date, and discount any capacity that rests only on an announcement.

Price the risk that a promised site slips by years, and keep a fallback in a market with a shorter interconnection queue. The buyers who ask about substations rather than sunshine are the ones who will actually have power when they need it.

Frequently asked questions

Why is only 4.5 GW of the announced 10.5 GW considered real?

According to CBRE, active capacity means a project tied to identifiable institutional capital and genuine development capability, rather than a site that has merely been announced. About 4.5 gigawatts of the roughly 10.5 gigawatts announced across Spain and Portugal meets that bar, leaving the rest uncertain and dependent on grid access that may not materialise.

If Iberia has cheap renewables, why is power the problem?

The problem is not generation but connection. Iberia has abundant low-cost renewable electricity, yet connection queues, limited substation capacity and network-reinforcement requirements, especially around Madrid, determine when a data centre can actually draw power. A site can sit beside a solar farm and still wait years for a firm interconnection.

What should I check before committing to an Iberian data centre?

Verify the grid-connection status, the position in the interconnection queue and the firm energisation date, and treat announced megawatts as marketing until a connection is secured. Track Spain's roughly 13.59 billion euro grid-investment plan, because reinforcement schedules, not renewable output, set the real delivery dates.

The scarce input in Iberian compute has flipped from power to permission, and the announced pipeline is more than twice what the grid can carry. The buyers who diligence the connection point rather than the press release are the ones who will have capacity when it counts.

Data centresSpainPortugalGrid connectionCBREEUDCAAI infrastructureInterconnection

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