GFI Compliance Balance: Draft IMO Regulation 36.1

The GFI compliance balance is the quantity in tonnes of CO2eq that draft regulation 36.1 of the IMO Net-Zero Framework computes for each ship each year: the direct compliance target annual GFI minus the ship’s attained annual GFI, multiplied by its total energy used on board. A balance of zero or more is direct compliance and earns surplus units under regulation 36.11; a negative balance is a compliance deficit, split into Tier 1 and Tier 2 deficits under regulation 36.4.

The full article will cover the sign convention and the grams-to-tonnes conversion the draft leaves implicit, the split into tiers, how the balance is recorded in the IMO GFI Registry, and how it compares with the FuelEU Maritime compliance balance. The attained GFI that feeds it is explained in the Marine Global Fuel Standard methodology .