Figure 1.
![Volumetric calorific value—Wu of natural gas in Poland: AV – average value, D – standard deviationSource: Own elaboration based on data from the GAS-SYSTEM database [GAS-SYSTEM 2023]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64726ab0215d2f6c89dc731c/j_oszn-2023-0014_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKB3E67D57%2F20260122%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260122T072543Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAoaDGV1LWNlbnRyYWwtMSJHMEUCIHTNfYedDUdDVZWwbsI582O5noWkHkXSmsImqtTR9kocAiEAo7cEy%2FaUWEFqbb6Uu71GIluaST5UagjSzPH1bgZO7PAqxgUI0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw5NjMxMzQyODk5NDAiDFYyR9p4024lY2YrlCqaBe6gSiwPs0zPYGAuIDy8s8DuW%2Fl2AR2vJ8V%2FCgOCLQrrTCfTkzY%2B2HTJc9VIVg%2FR%2BOGBArhfy5onrY%2Bnos3ag7Q4m9gUWkU5FEN6i0M7bL9%2B%2FF%2F%2BzKO69v3FWvzfRNqYvoUCKlE%2FTG0CQc5%2FCb%2Fet%2FZ3nHSrmTSW4afDBV4%2F2sdDuk2Y7j1%2FiSOdEAsAUkLxNaT8%2BYY0uzXR2U7tVROer6ZxFJEzMzvMGRWlNbg4aPXygFeSZRhUnf66pHR9Qif8HVwhrrthIUPXJKZPSGqbmSEVz%2FAg80%2Fn3aCrOMNwcqdYy3tkRVCPE2DgNN0Psj%2B0GA2A%2BansdSkNHSEd60TfZlR5JhpR6pxxU0gkXgkTVtPLcR8kVTPduS9%2FZw0b2CUNmjkxNhPu%2FoqDNZIKeSH3eJ%2BDEPAGJ7iWW88ZeVoPC7KZTPrNGGlqSu2JE%2FXqKLbrlC8mR%2BEn66wslULo1ztQ4pSz0u5788zr%2FiCPJQRoTXcgLiSXm7Y39qALq84qY1oRurK2FG%2Bgq%2BJuauKBuPBOMcKqX4qYLplaYHNIPq23ecmmWSJjRsgPziQsMh%2FfOu8TcwgYH3nj0urdg904CBXXCALvS8bbfRlNrW7jh9%2BC8mMTKhpp088mDXE%2BSTtvmJpgznQ%2FAukQGRV6b69Iz2mo%2Baq4Zu6vSK2qeQw%2Fkxy3ywOmvV3O5jdozNP3E7lOZC%2BUSCFCrUuZSidr5NqjDuhzRgQmICGYvif94lXywDxKti4CY7Gc09Rvi120CeeKB7BuoxFW1fOhk1UD9po%2Bx6VCYIsHMazwsdDsf6qqIUQ4GSjr2dPNs7j4CZdAY0D%2FkQF2OmZKTgRx1yKUmoRqkjvC7S%2Fhe3gegWop35Lk0rSRbgV%2Big9AydkfzGPRqjDwkMbLBjqxAYgujYLW%2FTYIEG1yQKh3rR86Pw3ZMS6%2BVvuRZC6rcJc%2Bt8XzBLxkWDfz1RcvhGwy8DKblOZSjxZ7RFjrc8SJ3Gmr6NWFaHd6wuhMaz%2BqSLB8a1QJlmr80lX55ADLIj%2Fd5HJNMaOb4NoKtSx07Dpq02bbK3cE0nbyLTHhZ2M9c5bPX7Qa%2Fpm81H9jwPwdffmOtKfX1ugUs5aigkoQPrzWNVVUKqg1p3qMCqalLN9zxrCmig%3D%3D&X-Amz-Signature=0bb15a13dba73d5e31879628a7197afee2472bd8c09729673abd2aac87cd6d75&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64726ab0215d2f6c89dc731c/j_oszn-2023-0014_fig_002.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKB3E67D57%2F20260122%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260122T072543Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAoaDGV1LWNlbnRyYWwtMSJHMEUCIHTNfYedDUdDVZWwbsI582O5noWkHkXSmsImqtTR9kocAiEAo7cEy%2FaUWEFqbb6Uu71GIluaST5UagjSzPH1bgZO7PAqxgUI0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw5NjMxMzQyODk5NDAiDFYyR9p4024lY2YrlCqaBe6gSiwPs0zPYGAuIDy8s8DuW%2Fl2AR2vJ8V%2FCgOCLQrrTCfTkzY%2B2HTJc9VIVg%2FR%2BOGBArhfy5onrY%2Bnos3ag7Q4m9gUWkU5FEN6i0M7bL9%2B%2FF%2F%2BzKO69v3FWvzfRNqYvoUCKlE%2FTG0CQc5%2FCb%2Fet%2FZ3nHSrmTSW4afDBV4%2F2sdDuk2Y7j1%2FiSOdEAsAUkLxNaT8%2BYY0uzXR2U7tVROer6ZxFJEzMzvMGRWlNbg4aPXygFeSZRhUnf66pHR9Qif8HVwhrrthIUPXJKZPSGqbmSEVz%2FAg80%2Fn3aCrOMNwcqdYy3tkRVCPE2DgNN0Psj%2B0GA2A%2BansdSkNHSEd60TfZlR5JhpR6pxxU0gkXgkTVtPLcR8kVTPduS9%2FZw0b2CUNmjkxNhPu%2FoqDNZIKeSH3eJ%2BDEPAGJ7iWW88ZeVoPC7KZTPrNGGlqSu2JE%2FXqKLbrlC8mR%2BEn66wslULo1ztQ4pSz0u5788zr%2FiCPJQRoTXcgLiSXm7Y39qALq84qY1oRurK2FG%2Bgq%2BJuauKBuPBOMcKqX4qYLplaYHNIPq23ecmmWSJjRsgPziQsMh%2FfOu8TcwgYH3nj0urdg904CBXXCALvS8bbfRlNrW7jh9%2BC8mMTKhpp088mDXE%2BSTtvmJpgznQ%2FAukQGRV6b69Iz2mo%2Baq4Zu6vSK2qeQw%2Fkxy3ywOmvV3O5jdozNP3E7lOZC%2BUSCFCrUuZSidr5NqjDuhzRgQmICGYvif94lXywDxKti4CY7Gc09Rvi120CeeKB7BuoxFW1fOhk1UD9po%2Bx6VCYIsHMazwsdDsf6qqIUQ4GSjr2dPNs7j4CZdAY0D%2FkQF2OmZKTgRx1yKUmoRqkjvC7S%2Fhe3gegWop35Lk0rSRbgV%2Big9AydkfzGPRqjDwkMbLBjqxAYgujYLW%2FTYIEG1yQKh3rR86Pw3ZMS6%2BVvuRZC6rcJc%2Bt8XzBLxkWDfz1RcvhGwy8DKblOZSjxZ7RFjrc8SJ3Gmr6NWFaHd6wuhMaz%2BqSLB8a1QJlmr80lX55ADLIj%2Fd5HJNMaOb4NoKtSx07Dpq02bbK3cE0nbyLTHhZ2M9c5bPX7Qa%2Fpm81H9jwPwdffmOtKfX1ugUs5aigkoQPrzWNVVUKqg1p3qMCqalLN9zxrCmig%3D%3D&X-Amz-Signature=1e432205281529c4e8b16339dcafa0c5ffd688f5fc5aa95de71905937c902637&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64726ab0215d2f6c89dc731c/j_oszn-2023-0014_fig_003.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKB3E67D57%2F20260122%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260122T072543Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAoaDGV1LWNlbnRyYWwtMSJHMEUCIHTNfYedDUdDVZWwbsI582O5noWkHkXSmsImqtTR9kocAiEAo7cEy%2FaUWEFqbb6Uu71GIluaST5UagjSzPH1bgZO7PAqxgUI0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw5NjMxMzQyODk5NDAiDFYyR9p4024lY2YrlCqaBe6gSiwPs0zPYGAuIDy8s8DuW%2Fl2AR2vJ8V%2FCgOCLQrrTCfTkzY%2B2HTJc9VIVg%2FR%2BOGBArhfy5onrY%2Bnos3ag7Q4m9gUWkU5FEN6i0M7bL9%2B%2FF%2F%2BzKO69v3FWvzfRNqYvoUCKlE%2FTG0CQc5%2FCb%2Fet%2FZ3nHSrmTSW4afDBV4%2F2sdDuk2Y7j1%2FiSOdEAsAUkLxNaT8%2BYY0uzXR2U7tVROer6ZxFJEzMzvMGRWlNbg4aPXygFeSZRhUnf66pHR9Qif8HVwhrrthIUPXJKZPSGqbmSEVz%2FAg80%2Fn3aCrOMNwcqdYy3tkRVCPE2DgNN0Psj%2B0GA2A%2BansdSkNHSEd60TfZlR5JhpR6pxxU0gkXgkTVtPLcR8kVTPduS9%2FZw0b2CUNmjkxNhPu%2FoqDNZIKeSH3eJ%2BDEPAGJ7iWW88ZeVoPC7KZTPrNGGlqSu2JE%2FXqKLbrlC8mR%2BEn66wslULo1ztQ4pSz0u5788zr%2FiCPJQRoTXcgLiSXm7Y39qALq84qY1oRurK2FG%2Bgq%2BJuauKBuPBOMcKqX4qYLplaYHNIPq23ecmmWSJjRsgPziQsMh%2FfOu8TcwgYH3nj0urdg904CBXXCALvS8bbfRlNrW7jh9%2BC8mMTKhpp088mDXE%2BSTtvmJpgznQ%2FAukQGRV6b69Iz2mo%2Baq4Zu6vSK2qeQw%2Fkxy3ywOmvV3O5jdozNP3E7lOZC%2BUSCFCrUuZSidr5NqjDuhzRgQmICGYvif94lXywDxKti4CY7Gc09Rvi120CeeKB7BuoxFW1fOhk1UD9po%2Bx6VCYIsHMazwsdDsf6qqIUQ4GSjr2dPNs7j4CZdAY0D%2FkQF2OmZKTgRx1yKUmoRqkjvC7S%2Fhe3gegWop35Lk0rSRbgV%2Big9AydkfzGPRqjDwkMbLBjqxAYgujYLW%2FTYIEG1yQKh3rR86Pw3ZMS6%2BVvuRZC6rcJc%2Bt8XzBLxkWDfz1RcvhGwy8DKblOZSjxZ7RFjrc8SJ3Gmr6NWFaHd6wuhMaz%2BqSLB8a1QJlmr80lX55ADLIj%2Fd5HJNMaOb4NoKtSx07Dpq02bbK3cE0nbyLTHhZ2M9c5bPX7Qa%2Fpm81H9jwPwdffmOtKfX1ugUs5aigkoQPrzWNVVUKqg1p3qMCqalLN9zxrCmig%3D%3D&X-Amz-Signature=953be5e472c01274dbade14e47c4df0eb472d5064dbbb3bfe8df9f8cbd4169e6&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
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 2005–2016Source: Own elaboration based on data from [KOBiZE 2022]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64726ab0215d2f6c89dc731c/j_oszn-2023-0014_fig_013.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKB3E67D57%2F20260122%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260122T072543Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAoaDGV1LWNlbnRyYWwtMSJHMEUCIHTNfYedDUdDVZWwbsI582O5noWkHkXSmsImqtTR9kocAiEAo7cEy%2FaUWEFqbb6Uu71GIluaST5UagjSzPH1bgZO7PAqxgUI0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw5NjMxMzQyODk5NDAiDFYyR9p4024lY2YrlCqaBe6gSiwPs0zPYGAuIDy8s8DuW%2Fl2AR2vJ8V%2FCgOCLQrrTCfTkzY%2B2HTJc9VIVg%2FR%2BOGBArhfy5onrY%2Bnos3ag7Q4m9gUWkU5FEN6i0M7bL9%2B%2FF%2F%2BzKO69v3FWvzfRNqYvoUCKlE%2FTG0CQc5%2FCb%2Fet%2FZ3nHSrmTSW4afDBV4%2F2sdDuk2Y7j1%2FiSOdEAsAUkLxNaT8%2BYY0uzXR2U7tVROer6ZxFJEzMzvMGRWlNbg4aPXygFeSZRhUnf66pHR9Qif8HVwhrrthIUPXJKZPSGqbmSEVz%2FAg80%2Fn3aCrOMNwcqdYy3tkRVCPE2DgNN0Psj%2B0GA2A%2BansdSkNHSEd60TfZlR5JhpR6pxxU0gkXgkTVtPLcR8kVTPduS9%2FZw0b2CUNmjkxNhPu%2FoqDNZIKeSH3eJ%2BDEPAGJ7iWW88ZeVoPC7KZTPrNGGlqSu2JE%2FXqKLbrlC8mR%2BEn66wslULo1ztQ4pSz0u5788zr%2FiCPJQRoTXcgLiSXm7Y39qALq84qY1oRurK2FG%2Bgq%2BJuauKBuPBOMcKqX4qYLplaYHNIPq23ecmmWSJjRsgPziQsMh%2FfOu8TcwgYH3nj0urdg904CBXXCALvS8bbfRlNrW7jh9%2BC8mMTKhpp088mDXE%2BSTtvmJpgznQ%2FAukQGRV6b69Iz2mo%2Baq4Zu6vSK2qeQw%2Fkxy3ywOmvV3O5jdozNP3E7lOZC%2BUSCFCrUuZSidr5NqjDuhzRgQmICGYvif94lXywDxKti4CY7Gc09Rvi120CeeKB7BuoxFW1fOhk1UD9po%2Bx6VCYIsHMazwsdDsf6qqIUQ4GSjr2dPNs7j4CZdAY0D%2FkQF2OmZKTgRx1yKUmoRqkjvC7S%2Fhe3gegWop35Lk0rSRbgV%2Big9AydkfzGPRqjDwkMbLBjqxAYgujYLW%2FTYIEG1yQKh3rR86Pw3ZMS6%2BVvuRZC6rcJc%2Bt8XzBLxkWDfz1RcvhGwy8DKblOZSjxZ7RFjrc8SJ3Gmr6NWFaHd6wuhMaz%2BqSLB8a1QJlmr80lX55ADLIj%2Fd5HJNMaOb4NoKtSx07Dpq02bbK3cE0nbyLTHhZ2M9c5bPX7Qa%2Fpm81H9jwPwdffmOtKfX1ugUs5aigkoQPrzWNVVUKqg1p3qMCqalLN9zxrCmig%3D%3D&X-Amz-Signature=f33e66fd8ae189a333d55909c85fbcdddd100b363fb324fb9a760f52be8fe71f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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 1988–2021Source: Own elaboration based on data from [KOBiZE 2022] [GUS 1988–2022] [IEA 2022]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64726ab0215d2f6c89dc731c/j_oszn-2023-0014_fig_014.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKB3E67D57%2F20260122%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260122T072543Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAoaDGV1LWNlbnRyYWwtMSJHMEUCIHTNfYedDUdDVZWwbsI582O5noWkHkXSmsImqtTR9kocAiEAo7cEy%2FaUWEFqbb6Uu71GIluaST5UagjSzPH1bgZO7PAqxgUI0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw5NjMxMzQyODk5NDAiDFYyR9p4024lY2YrlCqaBe6gSiwPs0zPYGAuIDy8s8DuW%2Fl2AR2vJ8V%2FCgOCLQrrTCfTkzY%2B2HTJc9VIVg%2FR%2BOGBArhfy5onrY%2Bnos3ag7Q4m9gUWkU5FEN6i0M7bL9%2B%2FF%2F%2BzKO69v3FWvzfRNqYvoUCKlE%2FTG0CQc5%2FCb%2Fet%2FZ3nHSrmTSW4afDBV4%2F2sdDuk2Y7j1%2FiSOdEAsAUkLxNaT8%2BYY0uzXR2U7tVROer6ZxFJEzMzvMGRWlNbg4aPXygFeSZRhUnf66pHR9Qif8HVwhrrthIUPXJKZPSGqbmSEVz%2FAg80%2Fn3aCrOMNwcqdYy3tkRVCPE2DgNN0Psj%2B0GA2A%2BansdSkNHSEd60TfZlR5JhpR6pxxU0gkXgkTVtPLcR8kVTPduS9%2FZw0b2CUNmjkxNhPu%2FoqDNZIKeSH3eJ%2BDEPAGJ7iWW88ZeVoPC7KZTPrNGGlqSu2JE%2FXqKLbrlC8mR%2BEn66wslULo1ztQ4pSz0u5788zr%2FiCPJQRoTXcgLiSXm7Y39qALq84qY1oRurK2FG%2Bgq%2BJuauKBuPBOMcKqX4qYLplaYHNIPq23ecmmWSJjRsgPziQsMh%2FfOu8TcwgYH3nj0urdg904CBXXCALvS8bbfRlNrW7jh9%2BC8mMTKhpp088mDXE%2BSTtvmJpgznQ%2FAukQGRV6b69Iz2mo%2Baq4Zu6vSK2qeQw%2Fkxy3ywOmvV3O5jdozNP3E7lOZC%2BUSCFCrUuZSidr5NqjDuhzRgQmICGYvif94lXywDxKti4CY7Gc09Rvi120CeeKB7BuoxFW1fOhk1UD9po%2Bx6VCYIsHMazwsdDsf6qqIUQ4GSjr2dPNs7j4CZdAY0D%2FkQF2OmZKTgRx1yKUmoRqkjvC7S%2Fhe3gegWop35Lk0rSRbgV%2Big9AydkfzGPRqjDwkMbLBjqxAYgujYLW%2FTYIEG1yQKh3rR86Pw3ZMS6%2BVvuRZC6rcJc%2Bt8XzBLxkWDfz1RcvhGwy8DKblOZSjxZ7RFjrc8SJ3Gmr6NWFaHd6wuhMaz%2BqSLB8a1QJlmr80lX55ADLIj%2Fd5HJNMaOb4NoKtSx07Dpq02bbK3cE0nbyLTHhZ2M9c5bPX7Qa%2Fpm81H9jwPwdffmOtKfX1ugUs5aigkoQPrzWNVVUKqg1p3qMCqalLN9zxrCmig%3D%3D&X-Amz-Signature=1a9a2bd3761c7eb995cdd7f795418dcc6d0aea75fcc411aecfcef7fcdcd1532f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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 |
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 |
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 |
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) |
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 |
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 |