Europe's Ports and Airports Face a Grid Bottleneck on the Road to Electrification

Europe’s ports and airports are under a legal mandate to electrify, but the power grid that must supply them is years behind schedule. As Transport & Environment points out, this is essentially the equivalent of buying an electric van for your business and then learning that the cable to the grid will not be laid for another decade.

The European Union has cut its overall greenhouse gas emissions by roughly 30 percent since 1990, yet emissions from international shipping and aviation have climbed by 26 percent and 29 percent respectively during the same period. No other sector has posted comparable growth. These are difficult areas to decarbonize because long-haul voyages and flights demand enormous energy density, and today’s batteries remain too heavy and bulky to compete with fossil fuels at that scale. Still, Brussels has moved ahead with rules requiring direct electrification wherever it is feasible: at berth and at the gate.

Under AFIR and FuelEU Maritime, container and passenger vessels docking at EU ports must switch to Onshore Power Supply by 2030 rather than idling on auxiliary engines, which should mean cleaner air for dockworkers and nearby residents. Ferries and short-sea ships are simultaneously moving toward hybrid and fully electric operation, so ports will soon be not only powering ships at berth but also recharging their batteries. On the aviation side, AFIR requires core and comprehensive TEN-T airports — those above 10,000 annual commercial flight movements — to provide electricity to stationary aircraft at contact stands starting in 2025 and at remote stands by 2030, phasing out diesel ground power units. Ground support equipment is electrifying quickly too, and electric and hybrid-electric regional aircraft are already in prototype form.

The core problem is grid congestion. Some 375 GW of clean energy projects and 455 GW of battery storage projects are queued for connection permission, while demand-side sites such as factories, data centres, ports and airports wait in a parallel line. The queues are formally separate, but both stall because new infrastructure takes far longer to build than the connections require. Europe’s grid was designed for a handful of large power stations and slow, predictable demand growth — not for hundreds of ports and airports switching to electricity at once. A new connection or reinforcement takes four to ten years, and roughly half of that is consumed by permitting before any cable is laid. Meanwhile, many developers request more capacity than they will ever need, and most countries still allocate it on a strict first-come, first-served basis, leaving no mechanism to prioritize a strategically vital TEN-T project over a stalled, speculative application.

T&E recommends that regulators map and plan port and airport electrification at both transmission and distribution system operator level, since policymakers currently have no picture of where the queue is worst or which sites risk missing their 2030 obligations. It also calls for flexible solutions — on-site generation, storage and smart charging — to reduce how much new grid capacity is actually needed, with co-located renewables behind a shared connection point cutting net demand from the public grid. Finally, T&E argues that flexible connection agreements should let ports and airports connect sooner at capacity that can flex up or down, rather than waiting years for a firm full-capacity slot. Such connections provide balancing services to the network and should be rewarded with flexible tariffs, an approach Germany and Belgium are already piloting.