Norway has proposed a technical multiplier under the IMO’s proposed Net-Zero Framework (NZF) to encourage the early uptake of zero- and near-zero-GHG-emission marine fuels and technologies.
In a submission to the IMO’s Intersessional Working Group on GHG Emissions from Ships this month, Norway said the mechanism would provide a “long-term, quantifiable incentive” for adopting cleaner energy options.
“Norway sees merit in a ZNZ technical multiplier,” the country said, adding that the incentive would not be “dependent on a revenue stream”.
Under the proposal, ships using eligible zero- and near-zero-emission fuels and technologies (ZNZs) would receive additional surplus units based on the amount of GHG emissions avoided.
These units could be used to balance compliance deficits under the framework.
Norway suggested the multiplier should start at 1.25 in 2029 before falling to 1.10 in 2030, 0.70 in 2031 and 0.50 in 2032. It would then remain at 0.30 from 2033 to 2036.
The multiplier effectively increases the weight given to ZNZ energy when calculating a ship’s attained greenhouse gas fuel-intensity (GFI).
Norway said the mechanism should be technology-neutral, covering eligible low-emission fuels, zero-emission technologies and onboard carbon capture, with emissions assessed on a well-to-wake basis.
However, the country acknowledged concerns that the multiplier could affect the framework’s environmental objectives and the market for surplus units.
Norway said the framework’s environmental integrity could be safeguarded by assessing the multiplier alongside the GFI trajectory.
It proposed strengthening the GFI targets to ensure emissions reductions remain aligned with the IMO’s 2023 GHG Strategy.
The country also proposed reviewing the multiplier after three years and during subsequent five-year reviews to assess its impact.
The proposal forms part of a wider package of amendments to the draft NFZ intended to address concerns raised by member states while retaining incentives for direct emissions reductions.
China has also backed the use of multipliers to improve the economic viability of ZNZ marine fuels.
The ISWG-GHG 23 will meet on November 23-27, ahead of MEPC 85 on November 30-December 3, to discuss the NZF, which failed to secure adoption in October 2025.
