Under sub-category 1.A.4.c ii (b) fuel combustion activities and resulting emissions from off-road vehicles and mobile machinery used in forestry are reported.

Primary activity data (PAD) are taken from National Energy Balances (NEBs) line 67: 'Commercial, trade, services and other consumers' (AGEB, 2020) ¹⁾.

Following the deduction of energy inputs for military vehicles as provided in (BAFA, 2020) ²⁾, the remaining amounts of gasoline and diesel oil are apportioned onto off-road construction vehicles (NFR 1.A.2.g vii) and off-road vehicles in commercial/institutional use (1.A.4. ii) as well as agriculture and forestry (NFR 1.A.4.c ii) based upon annual shares derived from TREMOD MM (Knörr et al. (2020b) ³⁾ (cf. NFR 1.A.4 - mobile).

Table 1: Annual contribution of forestry vehicles and mobile machinery to the primary fuel delivery data provided in NEB line 67

source: own estimates based on ⁴⁾

Table 2: Annual mobile fuel consumption in forestry, in terajoules

The emission factors used here are of rather different quality: For all main pollutants, carbon monoxide and particulate matter, annually changing values computed within TREMOD MM (Knörr et al. (2020b)) ⁵⁾ are used, representing the development of mitigation technologies and th effect of fuel-quality legislation.

Table 3: Annual coutry-specific emission factors from TREMOD MM¹

¹ due to lack of better information: similar EF are applied for fossil and biofuels
² from fuel combustion
³ from gasoline evaporation
⁴ EF(PM_2.5) also applied for PM₁₀ and TSP (assumption: > 99% of TSP consists of PM_2.5)
⁵ estimated via a f-BCs as provided in ⁶⁾, Chapter 1.A.2.g vii, 1.A.4.a ii, b ii, c ii, 1.A.5.b i - Non-road, note to Table 3-1: Tier 1 emission factors for off-road machinery
⁶ from leaded gasoline (until 1997)

For information on the emission factors for heavy-metal and POP exhaust emissions, please refer to Appendix 2.3 - Heavy Metal (HM) exhaust emissions from mobile sources and Appendix 2.4 - Persistent Organic Pollutant (POP) exhaust emissions from mobile sources.

Revisions in activity data result from slightly adapted EBZ67 shares as well as the implementation of primary activity data from the now finalised NEB 2018.

Table 5: Revised annual contribution of 1.A.2.g vii to fuel-specific over-all fuel deliveries provided in NEB line 67

Table 6: Revised activity data, in terajoules

As in contrast, all emission factors remain unrevised compared to last year's susbmission, emission estimates for the years as of 2015 change in accordance with the underlying activity data.