Brussels' grid queue: 375 GW of clean power waits as ports and airports are told to plug in

The most recent thing Brussels has to show for its electricity market reform agenda is a queue. Transport & Environment's briefing, flagged by CleanTechnica on 1 October, says 375 GW of clean energy projects and 455 GW of battery storage projects are waiting for permission to connect to the grid, alongside demand-side applicants such as factories, data centres, ports and airports. The two queues are technically separate, one for generation and one for demand, but they hit the same wall: new infrastructure takes longer to build than the projects take to arrive.

That is the awkward backdrop to a week of unusually concrete numbers about what electrification is supposed to deliver.

Storage is not generation

On 2 October, Fraunhofer ISE released a free electricity price simulator on its Energy-Charts.info platform, built on actual buy and sell bids from Germany's day-ahead auction. Users can set a hypothetical battery fleet from 0 GW to 20 GW with two to six hours of storage duration, and toggle whether block bids react to prices or whether neighbouring markets are coupled in. Running 2025 data through it, Fraunhofer found that 20 GW of two-hour batteries would have cut the average daily spread between the most and least expensive quarter-hour from €130/MWh to €53/MWh, a 60% fall.

The same fleet would have cut hours above €200/MWh from 169 to 20 and negative-price hours from 575 to 271. On 20 January 2025, the most expensive day of the year, the evening peak would have fallen from €583/MWh to €221/MWh. On 11 May 2025, the cheapest, midday prices would have risen from €-250/MWh to €-20/MWh. The market value of solar would have climbed 35%, from €45.08/MWh to €61.02/MWh.

Leonhard Gandhi, project manager for Energy Charts at Fraunhofer ISE, drew the obvious line: "Storage systems smooth out prices, but they don't generate electricity."

"The simulator illustrates both of these points very clearly and thus also shows that we need to consider storage and reliable power generation together."

Businesses want the rules left alone

The demand side is not waiting quietly. In a letter to Commission President Ursula von der Leyen dated 1 October, EV100 members including IKEA, EDF, Geopost and DFDS urged Brussels not to weaken the CO2 standards for heavy-duty vehicles. The current rules require a 43% cut in carbon dioxide from 2019 levels by 2030, 64% by 2035 and 90% by 2040. CleanTechnica reported the signatories' argument that stable targets are what make the investment case for electric trucks work, with charging infrastructure for heavy duty vehicles as their stated priority.

The letter followed the same outlet's 1 October publication of a separate appeal from European transport businesses, which asked the Commission not to bring forward the planned 2027 review of the standards. That letter cites the targeted amendment already made for the 2025-2030 period, which it says could mean 200,000 fewer electric trucks on Europe's roads over the next decade. Both letters are campaigns, not legislation, and neither carries a decision.

The cost arithmetic behind them is contested but improving. A Transport & Environment total cost of ownership analysis published on 28 September found that electric trucks are already the cheapest choice in six of nine major EU markets, which together account for 46% of new heavy truck sales. Savings over five years reach €100,000 in the Netherlands, €85,000 in Germany and €69,000 in Denmark, with payback after two years, and up to €128,000 in the Netherlands on a Chinese model.

Where the cells come from

Grid reform has a supply chain twin. T&E analysis published on 30 September argues the EU will have enough battery cells by 2030 to cover the Industrial Accelerator Act's scope, corporate and private EVs receiving public support, provided all projects materialise including medium-confidence ones. It also notes that a quarter of announced EU cell capacity since 2022 has been cancelled or shelved, and that Germany's 2035 project pipeline has halved.

A follow-up piece on 1 October put cathode capacity at 121,000 tonnes in the EU in 2027, against estimated demand of 52,000 to 75,000 tonnes to satisfy EU-UK Trade and Cooperation Agreement requirements. RECHARGE, the European battery industry association, is the source for that projection. T&E's claim that more than half of cells in EVs sold in the EU are already made in the EU sits against its own finding that non-European entities, predominantly South Korean manufacturers, account for more than 72% of active cell manufacturing on the continent.

On the demand side, ACEA, the European Automobile Manufacturers' Association, has asked for the EU-UK rules to be postponed again, three months before they enter force. T&E's 1 October response says the sector could be accused of acting in bad faith, a charge it attributes to ACEA's own letter.

The demand curve is not cooperating

Electricity consumption growth from EVs in the United States is slowing, which matters for anyone modelling European load. The US Energy Information Administration estimated on 30 September that light-duty EVs consumed 8% more electricity in the first half of 2026 than in the second half of 2025, down from the 13% to 24% growth seen in recent six-month periods. US EV sales fell 19% in the first half of 2026 against the previous half, after federal purchase credits ended on 30 September 2025.

Europe's car market is heading the other way, at least for one brand. ACEA data cited by Electrek on 2 October shows Kia as the fastest-growing top 10 passenger car brand year to date, with 377,078 registrations between January and August, up 9%, and EV registrations up 58%. The EU, EFTA and UK market grew 5.8% over the same period.

Ports and airports still have to plug in. AFIR requires container and passenger ships at EU ports to use onshore power supply by 2030, and obliges TEN-T core and comprehensive network airports above 10,000 commercial flight movements a year to supply electricity at contact stands from 2025 and remote stands from 2030. T&E notes that international aviation and shipping emissions have risen 29% and 26% respectively since 1990, while the EU cut overall greenhouse gas emissions by 30%.

None of that changes the queue. The reform question in Brussels is no longer whether to electrify, but whether the grid, the cells and the cathode plants can be built in the order the laws assume.