The Renewable Transport Fuel Obligations (Sustainable Aviation Fuel) Order 2024

The SAF obligation

3.—(1) Subject to paragraph (2), a SAF obligation is imposed on every supplier that, in a specified period, supplies relevant aviation turbine fuel.

(2) An obligation in paragraph (1) does not apply to a supplier that, in a specified period, supplies an amount of relevant aviation turbine fuel that has a total energy content of less than 15.9 terajoules.

(3) For the purposes of the SAF obligation—

“evidence” means SAF certificates issued in accordance with article 18;

“specified amount” means the sum of the main obligation and the power-to-liquid aviation fuel obligation for an obligated supplier for an obligation period;

“specified date” means 15th September of the year immediately following an obligation period (or the next working day after 15th September if 15th September is not a working day); and

“specified period” means a period beginning on 1st January and ending on the following 31st December and any such period is referred to in this Order as an “obligation period”.

(4) A supplier’s main obligation for an obligation period within column 1 of the table in paragraph (7) is the amount of sustainable aviation fuel that has a total energy content equal to the percentage of the supplier’s obligated amount for that period set out in the corresponding entry in column 2 of the table.

(5) A supplier’s power-to-liquid aviation fuel obligation for an obligation period within column 1 of the table in paragraph (7) is the amount of power-to-liquid aviation fuel that has a total energy content equal to the percentage of the supplier’s obligated amount for that period set out in the corresponding entry in column 3 of the table.

(6) The obligated amount for an obligation period is determined as follows—

(a) calculate the notional amount of relevant aviation turbine fuel which the supplier has supplied during the obligation period (see paragraph (8)); and

(b) if the notional amount has a total energy content of less than 344 terajoules, deduct the first 15.9 terajoules of that amount.

(7) The table is as follows—

(1) Obligation period or periods	(2) % which, when applied to the obligated amount, gives the main obligation	(3) % which, when applied to the obligated amount, gives the power-to-liquid aviation fuel obligation
1st January 2025 to 31st December 2025	2.041%	0.000%
1st January 2026 to 31st December 2026	3.734%	0.000%
1st January 2027 to 31st December 2027	5.485%	0.000%
1st January 2028 to 31st December 2028	7.082%	0.215%
1st January 2029 to 31st December 2029	8.952%	0.218%
1st January 2030 to 31st December 2030	10.556%	0.556%
1st January 2031 to 31st December 2031	11.485%	0.560%
1st January 2032 to 31st December 2032	12.465%	0.850%
1st January 2033 to 31st December 2033	13.467%	1.146%
1st January 2034 to 31st December 2034	14.493%	1.449%
1st January 2035 to 31st December 2035	15.882%	1.765%
1st January 2036 to 31st December 2036	17.344%	2.273%
1st January 2037 to 31st December 2037	18.856%	2.798%
1st January 2038 to 31st December 2038	20.421%	3.342%
1st January 2039 to 31st December 2039	22.040%	3.904%
1st January 2040 to 31st December 2040 and subsequent obligation periods	23.718%	4.487%

(8) For the purposes of paragraph (6)(a), the notional amount of relevant aviation turbine fuel, expressed in megajoules, which an aviation fuel supplier has supplied during an obligation period is determined in accordance with the following formula—

where—

• FN is the notional amount of relevant aviation turbine fuel;

• MT is the total mass (in kilograms) of relevant aviation turbine fuel supplied during that period;

• LHV_k is the lower heating value of aviation turbine fuel;

• i is the first consignment of relevant sustainable aviation fuel supplied during the obligation period for which the supplier has submitted an application for certificates to the Administrator in accordance with article 16;

• j is the final consignment of relevant sustainable aviation fuel supplied during the obligation period for which the supplier has submitted an application for certificates to the Administrator in accordance with article 16;

• MA is the total mass (in kilograms) of relevant sustainable aviation fuel which was supplied during that period;

• LHV is the lower heating value of the relevant sustainable aviation fuel;

• R is the percentage of MA which is attributable to a relevant feedstock;

• S is the mass of MA (in kilograms) which meets the sustainability criteria; and

• T is the mass of MA (in kilograms) which is attributable to a relevant feedstock.