Figure 1.

Figure 2.

Figure 3.

Pollutant emissions for different types of urban buses operating in Poland in 2020 [g/km]
| Bus types | NMVOC | NOX | PM2.5 | PM10 | SO2 | CO23 |
|---|---|---|---|---|---|---|
| Urbino 12 Diesel | 0.0844 | 1.0578 | 0.1099 | 0.2207 | 0 | 1031 |
| Urbino 12 Hybrid | 0.0633 | 0.7933 | 0.1099 | 0.2207 | 0 | 873 |
| Urbino 12 Hybrid plug-in | 0.0633 | 0.9096 | 0.1099 | 0.2258 | 0.1168 | 904 |
| Urbino 12 Electric | 0 | 0.7323 | 0.0814 | 0.1454 | 0.7323 | 1076 |
| Urbino 12 Hydrogen | 0 | 2.2725 | 0.0814 | 0.2125 | 2.2725 | 3341 |
| Urbino 12 CNG | 0.0988 | 4.0218 | 0.1099 | 0.2207 | 0 | 985 |
CO2 emission factor for Poland in the period 2014–2020 [kg/kWh]
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|---|---|
| 0.825 | 0.798 | 0.781 | 0.778 | 0.765 | 0.719 | 0.698 | 0.708 |
Projected CO2 emission factors in Poland in the period 2021–2030 [kg/kWh]
| 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|---|---|---|
| 0.680 | 0.662 | 0.644 | 0.626 | 0.608 | 0.590 | 0.572 | 0.554 | 0.536 |
Sensitivity analysis for the CO2 emission factors
| electric | ON |
| 0.692 | |
| electric | plug-in hybrid |
| 0.582 | |
| electric | hybrid |
| 0.562 | |
| plug-in hybrid | hybrid |
| 0.454 | |
| hydrogen | ON |
| 0.146 | |
| hydrogen | hybrid |
| 0.104 | |
| hydrogen | plug-in hybrid |
| 0.086 |
Emission factors for NOx, SO2, TSP in 2021 [kg/kWh]
| SO2 | NOx | TSP |
|---|---|---|
| 0.505 | 0.505 | 0.022 |