Europe installed 36 GWh of new BESS in 2025, pushing total operational battery storage capacity beyond 100 GWh for the first time, even as a new report and a Telegraph headline tried to turn the battery boom into a blackout scare. The numbers tell a cleaner story than the hand-wringing: the bloc is heading toward around 69 per cent renewable energy by 2030 and 80 per cent by 2050, yet it already wastes millions of euros worth of wind and solar power because grid systems cannot absorb all the electricity generated.
Brussels' Flexibility Fix
That waste is the real scandal. When supply outstrips demand, negative electricity prices can follow, and the system built by governments and market managers leaves renewable power stranded while households and industry are told to accept the rules of the game. Batteries, or BESS, are being sold as the answer because they can store electricity produced during the day, when consumption tends to be low, and release it in the evening when demand rises. That is the basic pitch from the clean-energy camp: use storage to make the grid less stupid.
SolarPower Europe said battery storage is helping integrate growing volumes of renewable energy, strengthen energy security and improve power system resilience. It added that as the continent seeks to reduce its dependence on costly fossil fuel imports, accelerate electrification and meet its climate goals, storage can no longer be viewed as a supporting technology. It is becoming, the group said, a strategic asset, instrumental to strengthening Europe’s resilience, competitiveness and energy sovereignty. The language is pure Brussels: resilience, competitiveness, sovereignty. The machinery of the single market never misses a chance to dress itself up as destiny.
The blackout alarm came after The Telegraph published an article headlined "Britain’s battery boom ‘risks overwhelming the grid’" and said back-up systems supporting wind power could trigger "the blackouts they are trying to avoid". That followed a report from the Panel of Technical Experts, an advisory group of independent consultants appointed by the UK government to advise on technical aspects of electricity market reform. The report did not say batteries will destabilise the grid and did not explicitly express concern over blackouts. It said only that modelling is needed on how batteries react in a Capacity Market Notice situation.
The State Wants Control, Not Clarity
A Capacity Market Notice, or CMN, is a signal four hours in advance that there may be less energy generation available than system operators expect they will need to meet national demand. The report said the PTE continues to consider that some thought needs to be given to the way BESS is likely to behave in a CMNs situation, as storage may then have an incentive to charge in advance to fulfil their CM obligations. It added that this may result in a fast descent into a stress event and that this additional demand may need to be more explicitly modelled when estimating peak demand.
The fear, such as it is, revolves around a familiar problem: grid operators cannot see and cannot control lots of small, distributed installations. If they all operate in unison, they would be difficult to manage. That is the real issue. Not blackouts. Control.
Adrian Hiel, director of the Electrification Alliance, said this is the same challenge managed with solar power for the last 20 years. He said the system has steadily gotten better and better at ensuring installations improve the grid rather than harm it. Realistically, he said, this only becomes a blackout risk if people ignore the fact that millions of batteries are being installed annually. No one is interested in doing that.
Hiel said the main solution is better modelling, which would allow grid operators to anticipate how battery fleets behave in certain situations. He said the models will have relatively large margins of error in the next couple of years, but then they will get more and more precise and accurate, just as they did with modelling how rooftop solar will behave. He also said the other solution is aggregating control by a third party, so instead of a household managing how its individual battery operates, a company will bring together tens or hundreds of thousands of batteries and run them for the maximum household value and the maximum grid benefit. That is the modern energy order in miniature: households, batteries, and demand all folded into systems managed by intermediaries and operators.
He said this idea is already being rolled out with smart electric vehicle charging in many countries and described it as a logical next step for batteries too, because it would let a grid operator contact the battery aggregator to either start consuming quickly, by charging, or start discharging quickly to meet sudden demand increases. Hiel also said batteries are going to be a much bigger help to the grid than hindrance.
Gas, Markets and the Old Threat
An industry voice quoted in the article said batteries are very expensive, but no data was provided to back that up. The International Energy Agency says average battery costs have plummeted by 90 per cent since 2010 because of advances in chemistry and manufacturing. A recent report from energy think-tank Ember found that by 2030, utility-scale batteries could deliver short-term flexibility in the EU at 20 per cent lower cost than new gas plants. It also found that in the next four years, EU batteries could deliver in a single hour more than 80 per cent of the power that all EU gas power plants combined can generate in the same period.
Beatrice Petrovich, a senior energy analyst at Ember, said: "Clean flexibility is here." She added: "Rapid growth in batteries, EV smart charging and heat pumps can reduce reliance on gas for grid balancing and ease grid strain. The task now is not innovation but execution: remove barriers, reward flexibility and scale these solutions fast enough to avoid locking in unnecessary fossil backup."
The Telegraph interviewee suggested that potential cost barriers and blackout risks mean countries should halt the clean energy transition and keep relying on fossil fuels. Hiel rejected that argument, saying: "Claiming that we shouldn’t build intermittent generation because of this tiny risk from batteries is a bit like telling a morbidly obese person that they shouldn’t lose weight because they will have to buy new clothes." He added: "The inconvenience of managing the impact of these millions of batteries is infinitesimally small compared to the benefits of maximising the cheapest sources of energy the world has ever known at a time when the countries who sell us gas talk about dominating Europe energetically and threaten to withhold that gas if we don’t do as they say."
That last line lands where the whole debate really lives. The battery question is not just about engineering. It sits inside a system where gas sellers can threaten Europe, governments can hide behind market reform, and the public is told that managed dependence is somehow prudence.
The UK's Department of Energy Security and Net Zero refused to comment when asked whether it was concerned about blackouts from the battery boom. It did not answer questions from Euronews Earth and instead provided the same quote it gave to The Telegraph. A spokesperson said: "Our capacity market ensures security of supply while providing value for money for consumers." The spokesperson added: "We’ve cut VAT on electricity to give families breathing space and our focus is working to bring bills down for good."
The capacity market, the consultants, the spokespeople, the market language. Same old choreography. The batteries may be new. The state script isn't.