The IMO EEXI and CII require vessels to become more efficient every year. Along with technical and operational measures, slow steaming could be carried out, affecting transit times and total available transport capacity.
Starting in 2024, under the EU Emission Trading Scheme, shipping companies must acquire and submit CO₂ allowances for the CO₂ emitted by their vessels. This will apply to all vessels above 5,000 GT, for 50% of their emitted CO₂ for voyages from/to Europe and 100% for intra-European voyages. In 2024, 40% of the emissions must be compensated, increasing to 70% in 2025 and 100% in 2026. Prices of allowances in 2023 vary per day. At the time of writing (June 2023) one emission allowance costs around € 100.
As a mt of fossil fuel emits slightly more than 3 mt of CO₂, the additional costs of these allowances vary from € 60 per mt HSFO on a voyage to Europe in 2024 to € 300 per mt HSFO for an inter-European voyage in 2026, subject to the allowances price of that time.
Fuel prices will increase from 2025 onwards, under the Fuel EU directive. Biofuel or synthetic fuels must be used in increasing percentages in order to lower the carbon intensity of fuel used in European ports and on European voyages. Subject to fuel price levels, this will lead to an estimated price increase of € 50 per mt fuel in 2025 and a further increase thereafter.
Although the regulations are not yet finalized by the European Union, under the EU Energy Taxation Directive, the tax exemption of fossil fuels will end. From then on, a new tax structure will be in place for all bunkers sold and used in the EU. The fuels will be taxed depending on their caloric value. A current estimate is that this will increase the price of fossil fuels by almost € 40 per mt.
These extra costs incurred by the move to more sustainable shipping will result in an increase in operational costs. Depending on the type of contract or shipment, the extra costs will be either included in the freight, charged separately or covered by contractual clauses on fuel, allowances and tax prices.