Table 1.
Types of natural gas [PGNiG 2023]
| Type of natural gas | High-methane E type | Nitrified Ls type | Nitrified Lw type | |
|---|---|---|---|---|
| Composition | Unit | |||
| Methane content | % V/V | 97.8 | 71.0 | 79.0 |
| Ethane, popane and butane content | % V/V | 1.0 | 1.0 | 1.0 |
| Nitrogen content | % V/V | 1.0 | 27.0 | 19.5 |
| Carbon dioxide and residual content | % V/V | 0.2 | 1.0 | 0.5 |
| Combustion heat | MJ/m3 | 40.0 (no less than 34.0) | 27.9 (no less than 26.0) | 31.0 (no less than 30.0) |
Table 2.
Percentage share by volume of individual components in natural gas in Poland
| Component | Percentage content - average value - AV | Standard deviation - D |
|---|---|---|
| Methane | 94.56 | 5.874 |
| Nitrogen | 2.640 | 5.291 |
| Ethane | 1.963 | 1.356 |
| Propane | 0.362 | 0.249 |
| Carbon Dioxide | 0.247 | 0.251 |
| Oxygen | 0.002 | 0.040 |
[i] Source: Own elaboration based on data from the GAS-SYSTEM database [GAS-SYSTEM 2023]

Figure 1.
Volumetric calorific value—Wu of natural gas in Poland: AV – average value, D – standard deviation
Source: Own elaboration based on data from the GAS-SYSTEM database [GAS-SYSTEM 2023]
Table 3.
Data adopted for high-methane (HM) and nitrified natural gas (N) [PGNiG 2023]
| Parameter | Unit | Type of gas | |
|---|---|---|---|
| HM | N | ||
| Wum | MJ/kg | 49.3 | 33.5 |
| WuV | MJ/m3 | 36.0 | 27.9 |
| ϱ | kg/m3 | 0.73 | 0.83 |
| uCH4 | - | 0.98 | 0.79 |
Table 4.
The data connected with the estimation of the carbon dioxide emission factor – WCO2 as well as energy carbon dioxide emission factor – WECO2 for high-methane (HM) and nitrified natural gas (N)
| Parameter | Unit | Type of gas | |
|---|---|---|---|
| HM | N | ||
| mmNG | u | 16.36 | 18.66 |
| uCH4 | - | 0.98 | 0.79 |
| mCO2 | u | 43.03 | 34.76 |
| WCO2 | kg/kg | 2.63 | 1.86 |
| WECO2 | kg/GJ | 53.36 | 55.62 |

Figure 2.
Carbon dioxide emission factor from combustion of high-methane (HM) and nitrified natural gas (N)
Source: Own elaboration based on data from [PGNiG 2023] and [GAS-SYSTEM 2023]

Figure 3.
Energy-related carbon dioxide emission factor from combustion of high-methane (HM) and nitrified natural gas (N)
Source: Own elaboration based on data from [PGNiG 2023] and [GAS-SYSTEM 2023]

Figure 4.
Natural gas consumption (excluding non-energy use) – Q (expressed in energy units) for all types of natural gas (S) in Poland in 1988–2021 by sectors: E&I – energy and industries, T – transport, O – other sectors and A – all sectors

Figure 5.
High-methane natural gas consumption (excluding non-energy use) – Q (expressed in energy unit) in Poland in 1988–2021 by sectors: E&I – energy and industries, T – transport, O – other sectors and A – all sectors

Figure 6.
Colliery gas consumption (excluding non-energy use) – Q (expressed in energy unit) in Poland in 1988–2021 by sectors: E&I – energy and industries, T – transport, O – other sectors, and A – all sectors

Figure 7.
HM excluding CG consumption (excluding non-energy use) – Q (expressed in energy units) in Poland in 1988–2021 by sectors: E&I – energy and industries, T – transport, O – other sectors, and A – all sectors

Figure 8.
Nitrified natural gas consumption (excluding non-energy use) – Q (expressed in energy units) in Poland in 1988–2021 by sectors: E&I – energy and industries, T – transport, O – other sectors, and A – all sectors

Figure 9.
Natural gas consumption (excluding non-energy use) – Q (expressed in energy units) for all sectors of application (A) in Poland in 1988–2021 by types of natural gas: HM, CG, HM-CG, N, and S

Figure 10.
Natural gas consumption (excluding non-energy use) – Q (expressed in energy unit) for energy and industry sectors (E&I) in Poland in 1988–2021 by types of natural gas: HM, CG, HM-CG, N, and S

Figure 11.
Natural gas consumption (excluding non-energy use) – Q (expressed in energy units) for transport sector (T) in Poland in 1988–2021 by types of natural gas: HM, HM-CG, N, and S

Figure 12.
Natural gas consumption (excluding non-energy use) – Q (expressed in energy units) for other sectors (O) in Poland in 1988–2021 by types of natural gas: HM, HM-CG, N, and S

Figure 13.
Aggregated energy carbon dioxide emission factors – WEagr t for particular types of natural gas (HM, CG, and N) in Poland in 1988 – 2021 estimated on the basis of the plant-specific data reported under ETS. The values for 1988–2004 are the arithmetic means of the values for the years 2005–2016
Source: Own elaboration based on data from [KOBiZE 2022]
Table 5.
Aggregated energy carbon dioxide emission factors—WEagr t [kg/GJ]—for individual types of natural gas in Poland in 2005–2021
| Type of natural gas | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|---|---|---|
| High-methane natural gas | 54.71 | 54.73 | 54.97 | 55.09 | 55.20 | 55.11 | 55.14 | 55.22 | 55.49 |
| Nitrified natural gas | 54.97 | 54.99 | 55.04 | 56.17 | 56.12 | 56.18 | 56.08 | 56.07 | 56.00 |
| Colliery gas | 57.24 | 56.20 | 56.72 | 57.81 | 57.21 | 57.87 | 57.01 | 56.95 | 57.91 |
| Type of natural gas | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
| High-methane natural gas | 55.21 | 55.40 | 55.40 | 55.30 | 55.31 | 55.30 | 55.36 | 55.34 | |
| Nitrified natural gas | 55.53 | 56.03 | 55.99 | 55.82 | 56.01 | 56.04 | 56.05 | 56.11 | |
| Colliery gas | 57.39 | 56.94 | 57.64 | 57.50 | 56.02 | 58.24 | 57.86 | 58.03 |
[i] Source: Own elaboration based on data from [KOBiZE 2022]

Figure 14.
Aggregated energy carbon dioxide emission factors—WEagr s—for natural gas combustion in the sectors of energy and industry (E&I) as well as other sectors (O) in Poland in 1988–2021
Source: Own elaboration based on data from [KOBiZE 2022] [GUS 1988–2022] [IEA 2022]
Table 6.
Aggregated energy carbon dioxide emission factors—WEagr s [kg/GJ] —for natural gas combustion in the sectors of energy and industry (E&I) as well as other sectors (O) in Poland in 2005–2021
| Sectors | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Energy and industry (E&I) | 54.85 | 54.84 | 55.06 | 55.36 | 55.41 | 55.33 | 55.32 | 55.37 | 55.63 |
| Other sectors (O) | 54.74 | 54.76 | 54.98 | 55.20 | 55.27 | 55.16 | 55.19 | 55.25 | 55.51 |
| Sectors | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
| Energy and industry (E&I) | 55.34 | 55.58 | 55.54 | 55.41 | 55.42 | 55.44 | 55.48 | 55.47 | |
| Other sectors (O) | 55.22 | 55.43 | 55.43 | 55.33 | 55.35 | 55.33 | 55.39 | 55.37 |
[i] Source: Own elaboration based on data from [KOBiZE 2022] [GUS 1988–2022] [IEA 2022]