Spain and Portugal Blackout Tests EV Charging Resilience
Power cuts across Spain and Portugal caused mass disruption, 28 April, from rail travel to sporting events, but for the growing number of EV drivers, the outage creates a fresh challenge.
With mobility depending on electricity, power resilience becomes a key concern not just for homes and businesses, but also for EV infrastructure.
Electricity failure hits EV reliability
Spain and Portugal's power loss cut electricity across key cities including Madrid, Lisbon, Barcelona, Porto and Seville.
This not only disables traffic lights and suspended the Madrid Open, but also stalls electric trains and immobilises EV charging stations.
Spain’s national grid operator, Red Eléctrica de España (REE), refered to the incident as “el cero” (the zero) and confirmed the system failure: “Red Eléctrica and industry companies are working in a coordinated manner to restore power supply throughout the country as quickly as possible.”
It explains that “the peninsular electricity system suffered a power outage this morning in mainland Spain and Portugal” and adds that procedures have been activated to restore supply by powering generation sets which then reconnect to the grid.
As of 7am local time on 29 April, REE reported that 99.95% of demand is restored.
However, this was too late for commuters stranded mid-journey and for EV drivers who rely on a functioning grid to keep vehicles moving.
With EV adoption rising in Iberia, such disruptions test the preparedness of EV infrastructure, including the presence of battery-buffered charging stations and contingency grids.
The outage also exposes how vulnerable EV users are in the absence of decentralised storage or off-grid charging alternatives.
An unknown causative agent
There is still no definitive explanation, Spanish Prime Minister Pedro Sánchez cautions against misinformation, while regional leaders float and then retract claims of cyberattack.
Portugal’s network operator, Redes Energéticas Nacionais (REN), attributes the issue to a major voltage fluctuation in Spain’s grid.
As Portugal was importing energy at the time, the shock prompted safety shutdowns in Portuguese plants.
According to REN, the response followed protocol.
Such fluctuations can stem from rapid temperature or wind changes, although reaching this scale remains rare.
For EVs and charging networks, any large fluctuation threatens voltage-sensitive systems.
At 12:33pm, around when the blackout began, data from ElectricityMaps shows that 60.24% of power in Spain came from solar and 10.6% from wind.
With 7.5% of this exported to Portugal and 2.57% to France, Spain’s grid was under pressure.
When renewable output dips quickly, storage and supplementary sources must respond fast.
But with solar and wind dispersed across regions, it is unlikely all would drop at once due to weather.
Still, instability can grow when renewables dominate the mix without sufficient balancing measures in place.
This matters for EVs: rapid shifts in supply can knock out charging hubs not equipped with local storage or flexible backup systems.
The blackout pushes attention to how EV charging networks manage fluctuating supply.
Leaning on fossil fuels and power backup
By 6am on 29 April, natural gas covers more than 50% of available electricity in Spain – far more than usual.
This reflects a shift towards stable, dispatchable energy as the country restores supply and restarts industry.
The outage affects key sectors including vehicle manufacturing, food production and chemicals – all vital to both the Spanish economy and EV production lines.
Rail systems go offline, assembly plants pause and businesses lacking robust backup face costly downtime.
For EV drivers the interruption reveals a hidden dependency, charging infrastructure needs not just energy but resilient and decentralised systems.
Even those with at-home chargers face outages if the grid fails.
“This is a reminder that energy resilience must be a strategic priority for businesses,” comments Andrew Gordon, Managing Director UK&I at Eaton.
“Not only is it about prevention, but also how quickly and safely businesses can restore power when disruption strikes.
“Right now, organisations across Spain and Portugal will be working to get back up and running again to ensure financial and reputational damage is kept to a minimum.
“Even for those unaffected, this should be a wake-up call to make sure they are investing in the right technologies that can safeguard them from such costly and disruptive situations.”
This incident brings home the reality for EVs and smart transport: the cleaner the fuel, the more crucial the infrastructure behind it.
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