Shore power moved from a voluntary environmental measure to a compliance obligation through two pieces of EU law adopted in 2023: FuelEU Maritime, which regulates the ship, and the Alternative Fuels Infrastructure Regulation (AFIR), which regulates the port. Owners tend to hear about them as a single 2030 deadline. They are worth separating.
What FuelEU Maritime asks of the ship
FuelEU Maritime requires containerships and passenger ships above 5,000 gross tonnage to connect to onshore power supply and use it for their electrical needs while moored at a quayside in a TEN-T port, from the start of 2030. The obligation extends to other EU ports where shore power is installed from 2035. Alongside the at-berth rule, the regulation sets a separate, progressively tightening limit on the greenhouse gas intensity of the energy a ship uses at sea — a different mechanism aimed at fuel rather than berth behaviour.
What AFIR asks of the port
AFIR puts the matching obligation on infrastructure: TEN-T maritime ports handling a threshold number of calls by containerships and passenger ships must provide shore-side electricity for those vessels by the same 2030 horizon. That is deliberate symmetry — the ship rule only works if the socket exists. In practice the roll-out is uneven, and which of your regular berths will actually be equipped, at what voltage and frequency, is a question worth asking terminals now rather than in 2029.
The exemptions worth reading carefully
The at-berth obligation is not absolute. Short calls below the stated duration threshold, unscheduled or emergency calls, and situations where the port simply cannot supply compatible power are treated differently, as is a vessel using an accepted zero-emission technology instead. Exemptions are narrower than they first read, and a plan built on them is fragile — but they matter for vessels whose trade is genuinely dominated by short stays.
EU ETS changed the arithmetic before 2030 did
The extension of the EU Emissions Trading System to shipping means emissions from voyages and time at berth in the EU now carry a direct cost, phased in from 2024. That changes the business case for a conversion independently of the 2030 mandate: fuel burnt on auxiliaries alongside is no longer just fuel, it is fuel plus allowances. For vessels with long port stays, the payback maths often works before the obligation bites.
Why 2030 is not the date that should drive planning
Working backwards from a 2030 first-compliant call, the constraint is not the regulation — it is the queue. A conversion needs a load survey, a class-approved design, long-lead electrical equipment and a dock window. Those compete with every other owner working to the same date, and the transformer and converter market is where that competition shows up first.
- Confirm which of your regular berths will have compatible shore supply, and at what frequency
- Get the vessel's real at-berth load profile measured rather than estimated
- Fix where frequency conversion will live — ship or shore — before specifying anything
- Book the class approval path against the dock window, not the other way round
- Order long-lead electrical equipment against the dock date
This summary reflects the regulations as adopted; scope, thresholds and dates are subject to amendment and to how individual flag states and ports implement them. Confirm the current text against your own vessel class, tonnage and trading pattern before making an investment decision.