Firms Race to Add Battery Storage in Spain and Portugal

Estimated reading time: 5 minutes · Last updated: 26 August 2026

Battery storage demand has surged across Spain and Portugal since the 28 April last year blackout, as industrial users add on‑site batteries to avoid costly production stoppages. Red Eléctrica recorded 193MW of battery capacity on the Spanish grid in April 2026, and Spain’s IDAE awarded €827m to 133 storage projects totalling 2,400MW, supporting large-scale deployment. These public funds and corporate purchases are the immediate mechanism: firms buy modular batteries for short-duration backup and to trade power back to the grid, reducing the operational risk that the blackout exposed, as first reported by the BBC.

A backup for a few hours, or even minutes, might guarantee that machines don't get damaged,

Miguel Matias

Why the blackout forced companies to rethink backup

The 28 April last year blackout halted production at firms from meat processors to ceramic makers and forced managers to confront the limits of traditional emergency systems. At Fribin in Binéfar, refrigeration was prioritised but production lines still had to stop, costing the company hundreds of thousands of euros and prompting a shift towards battery backup. The company had ruled batteries expensive until the outage; it then bought a five megawatt-hour module in June 2025 and ordered a second matching module in early June 2026, with the purchases partly funded by the European Union’s Next Generation funds.

For many industrial sites, the rationale is straightforward: a short power interruption can damage machines or force irreversible scrap in continuous processes. That vulnerability is increasing as factories switch from fossil fuels to electricity for heat and motors, a change encouraged by EU subsidies. The immediate outcome is that procurement choices now balance capital cost against avoided production losses and regulatory incentives.

How national numbers and grants accelerate deployment

Deployment at scale is being driven by grid needs and public programmes. Red Eléctrica’s register of 193MW in April 2026 represents almost a sevenfold rise from the roughly 28MW recorded before the blackout, underlining the speed of additions once financing and demand align. Spain’s Institute for the Diversification and Saving of Energy, the IDAE, channelled €827m of EU funding to 133 storage projects whose combined capacity the agency lists at 2,400MW; the IDAE says about 80% of that capacity will be battery systems.

That public envelope matters for vendors and buyers. Projects backed by the award are large enough to change market dynamics: the new capacity will be close to ten times what the grid operator previously registered. For policy planners, the funding shortens payback windows for industrial buyers that can also monetise storage by selling electricity into wholesale or local markets.

What companies are buying and how they use it

Industrial buyers are choosing modular batteries that can do two jobs: provide instantaneous backup and participate in energy markets. Prime examples in the coverage include Vista Alegre, which equipped its Ílhavo plant with modules around 2MWh of storage, and Primus Ceramics, which installed two batteries in 2022 and plans to more than double capacity by the end of this year to store additional solar output. Firms report the same pattern: batteries protect continuous processes and create a revenue stream when market prices allow selling back to the grid.

Vendors say customer requirements have evolved. Where earlier purchases focused only on a few minutes of backup, customers now demand capabilities described in supplier briefings as seamless backup—an uninterrupted, instantaneous transfer from grid to stored power—and faster delivery schedules to meet funding deadlines. That combination changes system design and the supply chain choices of buyers.

Delivery pressures and operational limits that could slow rollout

Rapid growth exposes bottlenecks beyond finance. Suppliers report compressed delivery schedules as buyers race to meet the conditions tied to EU programmes, and shorter lead times increase the risk of delayed commissioning. Manufacturers and installers must coordinate grid connection, control software and in‑plant wiring under tight timetables; any hold‑up can push a project past the funding deadline and weaken its economics.

Weather and network faults remain part of the problem set. The end of January Storm Kristin toppled thousands of poles across central Portugal and left hundreds of thousands without power for periods measured in days or weeks; those events are precisely what firms want to guard against, but they also raise questions about distribution resilience and the location of storage assets relative to vulnerable network segments. Finally, smaller companies face a capital barrier: even with grants, the up‑front cost and the need to integrate batteries with existing systems are non‑trivial obstacles.

How deployment could speed up — and what might slow it

The bottom line

The blackout on 28 April last year crystallised a commercial problem into an investment priority: firms that could not tolerate abrupt power loss started buying modular batteries, and public funding has made larger deployments feasible. Red Eléctrica’s April 2026 register of 193MW and the IDAE’s €827m package together show a clear pipeline of projects, but delivery schedules, grid connection and local network vulnerabilities will determine how quickly that pipeline converts to operational hours of backup. For now, the market is shifting from isolated diesel contingencies to integrated battery systems that can both protect production and participate in energy markets.

What to watch

• Watch for Primus Ceramics to more than double its battery capacity by the end of this year; no firm completion date has been published.
• Watch for the start dates and first commissioning reports from projects funded under the IDAE €827m award; no comprehensive schedule has been released.