Estimating carbon dioxide emissions from gas plants

From Global Energy Monitor
Part of the
Global Oil and Gas Plant Tracker,
a Global Energy Monitor project.
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The following factors are used to estimate the CO2 emissions from gas-fired power plants:

  • Plant capacity
  • Plant capacity factor
  • Lifecycle emissions factor for a gas-fired power plant
  • Lifetime of a gas plant

Formula

The CO2 emissions from a gas plant can be calculated with the following formula:

Annual CO2 equivalent emissions (in million tonnes/year) = capacity (MW) * capacity factor (%) * lifecycle emissions factor (t CO2/kWh) * 1e6 g/1 t * 1 GW/1000 MW * 8760 hours/year * 1e6 kWh/1 GWh

The total lifetime CO2 emissions from a gas plant can be calculated with the following formula:

Lifetime CO2 equivalent emissions (in million tonnes) = Annual CO2 equivalent emissions (in million tonnes/year) * lifetime of gas plant

Capacity Factor

"Capacity factor" or "load factor," is a measure of the amount of power that a plant produces compared with the amount it would produce if operated at its rated capacity nonstop. A capacity factor of 100% means that a plant is run at its maximum capacity for every hour of the year. Actual capacity factors are lower than 100% because of routine maintenance, fuel availability problems, and variations in demand.

Capacity factor can be calculated as follows:

Capacity Factor (%) = [Generation (GWh) * 1 year/8760 h] / Capacity (GW)

For the Global Oil and Gas Plant Tracker, a country/area-level (or in some cases, regional) capacity factor is used in calculating the CO2 emissions.

The latest gas power generation published by Ember is used for the capacity factor calculation. In some cases, generation data reported is not available for the latest year. For example, for countries where 2021 data is unavailable, 2020 gas power generation is used. Operating capacity at the country/area-level is taken from GEM's latest available Global Oil and Gas Plant Tracker.

Regional Capacity Factor

Regional capacity factors are shown in Table 1 below with the following inputs:


Table 1: Regional Capacity Factors Calculated for Global Oil and Gas Plant Tracker

Region Sub-region GEM Operating Capacity (MW) Ember Power Generation (TWh) Weighted Average Capacity Factor (%)
Africa Northern Africa 104,286 374 41.0%
Africa Sub-Saharan Africa 28,131 101 41.1%
Americas Latin America and the Caribbean 144,025 565 44.8%
Americas Northern America 600,178 1,963 37.3%
Asia Central Asia 28,010 136 55.4%
Asia Eastern Asia 372,761 1,120 34.3%
Asia South-eastern Asia 114,936 383 38.0%
Asia Southern Asia 148,337 551 42.4%
Asia Western Asia 310,319 1,174 43.2%
Europe Eastern Europe 144,762 643 50.7%
Europe Northern Europe 53,739 134 28.5%
Europe Southern Europe 96,890 251 29.6%
Europe Western Europe 72,637 214 33.7%
Oceania Australia and New Zealand 18,379 58 36.0%
Oceania Melanesia 312 5 173.9%
Oceania Micronesia 198 2 98.0%
Total Total 2,237,900 7,675 39.2%

As a comparison, the International Energy Agency (IEA) in their 2021 World Energy Outlook (Table A.3a) reports:

Global gas power production 6,257 TWh
Global gas power capacity 1,822 GW
Global capacity factor 39.20%

Country/Area Level Capacity Factor

Country/area level capacity factors are shown in Table 2 below with the following inputs:

  • GEM's August 2026 Global Oil and Gas Plant Tracker data
  • Ember's yearly electricity data release (downloaded August 2026)
  • In cases where country/area level capacity factors were inaccurate (ie: greater than 100% or large variation between regional and country/area level capacity factor) the regional capacity factor was assumed for the CO2 emissions calculation.


Table 2: Country/area-level Capacity Factors Calculated for Global Oil and Gas Plant Tracker

Country/Area Region Subregion GEM Operating Capacity (MW) Ember 2020 Generation (TWh) Ember 2021 Generation (TWh) Ember 2022 Generation (TWh) Ember 2023 Generation (TWh) Ember 2024 Generation (TWh) Ember 2025 Generation (TWh) Ember 2026 Generation (TWh) Ember Generation data used (TWh) Ember Generation data year Country Capacity factor (%) Regional Capacity factor (%) Country or regional level? Capacity factor to use
Afghanistan Asia Southern Asia 200 0.1 0.1 0.1 0.1 0.1 0 0 0.1 2024 5.7% 42.4% regional 42.4%
Albania Europe Southern Europe 110.2 0 0 0 0 0 0 0 0 29.6% regional 29.6%
Algeria Africa Northern Africa 26457.6 78.49 84.79 90.61 94.97 95.33 0 0 95.33 2024 41.1% 41.0% Country/Area 41.1%
Angola Africa Sub-Saharan Africa 929 4.1 4.14 4.23 4.09 4.1 0 0 4.1 2024 50.4% 41.1% Country/Area 50.4%
Argentina Americas Latin America and the Caribbean 23016.2 96.37 103.56 93.53 86.12 88.31 88.07 0 88.07 2025 43.7% 44.8% Country/Area 43.7%
Armenia Asia Western Asia 1127 3.17 3.38 3.88 3.72 3.52 3.31 0 3.31 2025 33.5% 43.2% Country/Area 33.5%
Aruba Americas Latin America and the Caribbean 102 0.82 0.83 0.83 0.83 0.83 0 0 0.83 2024 92.9% 44.8% regional 44.8%
Australia Oceania Australia and New Zealand 17333.3 57.94 52.78 56.27 52.43 55.52 53.41 0 53.41 2025 35.2% 36.0% Country/Area 35.2%
Austria Europe Western Europe 4826 13.05 13.92 14.06 10.82 10.81 12.07 0 12.07 2025 28.6% 33.7% Country/Area 28.6%
Azerbaijan Asia Western Asia 7140.9 24.43 26.27 27.1 27.19 24.57 24.74 0 24.74 2025 39.5% 43.2% Country/Area 39.5%
Bahamas Americas Latin America and the Caribbean 246.3 2.02 2.03 2.03 2.19 2.23 0 0 2.23 2024 103.4% 44.8% regional 44.8%
Bahrain Asia Western Asia 9281.9 33.36 33.87 35.6 37.38 37.85 0 0 37.85 2024 46.6% 43.2% Country/Area 46.6%
Bangladesh Asia Southern Asia 20524.7 81.06 89 95 88.32 79.53 78.95 0 78.95 2025 43.9% 42.4% Country/Area 43.9%
Barbados Americas Latin America and the Caribbean 110 0.99 0.98 1.01 1.01 1.01 0 0 1.01 2024 104.8% 44.8% regional 44.8%
Belarus Europe Eastern Europe 9215.2 36.82 34.17 31.21 28.65 28.7 27.15 0 27.15 2025 33.6% 50.7% regional 50.7%
Belgium Europe Western Europe 6069 30.41 26.32 26.02 21.74 17.98 19.41 0 19.41 2025 36.5% 33.7% Country/Area 36.5%
Benin Africa Sub-Saharan Africa 127.4 0.98 1.11 0.97 0.97 0.97 0 0 0.97 2024 86.9% 41.1% regional 41.1%
Bermuda Americas Northern America 114 0 0 0 0 0 0 0 0 37.3% regional 37.3%
Bolivia Americas Latin America and the Caribbean 1945.2 6.61 6.69 7.5 8.37 8.93 8.71 0 8.71 2025 51.1% 44.8% Country/Area 51.1%
Bosnia and Herzegovina Europe Southern Europe 0 0 0 0 0 0 0 0 0 29.6% regional 29.6%
Botswana Africa Sub-Saharan Africa 70 0.05 0.09 0.1 0.03 0.05 0 0 0.05 2024 8.2% 41.1% regional 41.1%
Brazil Americas Latin America and the Caribbean 22989.3 74.04 109.59 54.31 50.12 62.47 67.5 0 67.5 2025 33.5% 44.8% Country/Area 33.5%
Brunei Asia South-eastern Asia 586 4.51 4.46 4.39 4.46 4.45 0 0 4.45 2024 86.7% 38.0% regional 38.0%
Bulgaria Europe Eastern Europe 761 2.53 3.33 2.4 2.14 2.3 2.11 0 2.11 2025 31.7% 50.7% regional 50.7%
Burkina Faso Africa Sub-Saharan Africa 165.9 1.29 1.4 1.43 1.42 1.4 0 0 1.4 2024 96.3% 41.1% regional 41.1%
Cambodia Asia South-eastern Asia 800.5 0.45 0.55 0.35 0.05 0.53 0.45 0 0.45 2025 6.4% 38.0% regional 38.0%
Cameroon Africa Sub-Saharan Africa 364 3.51 3.12 2.86 1.93 1.95 0 0 1.95 2024 61.2% 41.1% regional 41.1%
Canada Americas Northern America 29276.5 82.55 90.2 98.49 109.77 116.9 124.22 0 124.22 2025 48.4% 37.3% Country/Area 48.4%
Cayman Islands Americas Latin America and the Caribbean 68 0.67 0.68 0.68 0.68 0.68 0 0 0.68 2024 114.2% 44.8% regional 44.8%
Central African Republic Africa Sub-Saharan Africa 50 0 0 0 0 0 0 0 0 41.1% regional 41.1%
Chad Africa Sub-Saharan Africa 60 0.33 0.41 0.37 0.34 0.35 0 0 0.35 2024 66.6% 41.1% regional 41.1%
Chile Americas Latin America and the Caribbean 6989.2 17.02 18.96 19.15 18.39 12.99 14.04 0 14.04 2025 22.9% 44.8% regional 44.8%
China Asia Eastern Asia 190696.3 305.97 344.16 345.55 374.77 409.6 406.6 0 406.6 2025 24.3% 34.3% Country/Area 24.3%
Colombia Americas Latin America and the Caribbean 4359 17.84 16.59 16.24 19.38 23.25 15.23 0 15.23 2025 39.9% 44.8% Country/Area 39.9%
Costa Rica Americas Latin America and the Caribbean 202.4 0.02 0 0 0.01 0.01
0 0.01 2024 0.6% 44.8% regional 44.8%
Croatia Europe Southern Europe 1420.8 3.46 3.12 3.59 3.88 3.26 2.74 0 2.74 2025 22.0% 29.6% Country/Area 22.0%
Cuba Americas Latin America and the Caribbean 1433 18.13 17.04 14.98 19.02 18.65 0 0 18.65 2024 148.6% 44.8% regional 44.8%
Cyprus Asia Western Asia 1853 4.25 4.34 4.38 4.24 4.4 4.27 0 4.27 2025 26.3% 43.2% regional 43.2%
Czech Republic Europe Eastern Europe 1819 8.72 8.11 5.06 4.31 4.29 4.24 0 4.24 2025 26.6% 50.7% regional 50.7%
Côte d'Ivoire Africa Sub-Saharan Africa 1669 7.82 8.64 9.16 7.67 7.67 0 0 7.67 2024 52.5% 41.1% Country/Area 52.5%
DR Congo Africa Sub-Saharan Africa 0 0.01 0 0 0 0 0 0 0.01 2020 41.1% regional 41.1%
Denmark Europe Northern Europe 1203.2 2.07 2.45 2.3 2.08 2.04 1.84 0 1.84 2025 17.5% 28.5% regional 28.5%
Djibouti Africa Sub-Saharan Africa 108 0.13 0.13 0.13 0.13 0.13 0 0 0.13 2024 13.7% 41.1% regional 41.1%
Dominican Republic Americas Latin America and the Caribbean 3586.2 10.37 11.86 10.92 12.6 12.3 10.69 0 10.69 2025 34.0% 44.8% Country/Area 34.0%
Ecuador Americas Latin America and the Caribbean 1553.64 6.37 6.04 7.93 9.45 9 7.54 0 7.54 2025 55.4% 44.8% Country/Area 55.4%
Egypt Africa Northern Africa 54218.5 174.84 184.3 191.11 195.95 210.81 213.73 0 213.73 2025 45.0% 41.0% Country/Area 45.0%
El Salvador Americas Latin America and the Caribbean 929.5 0.98 0.99 0.61 0.73 0.6 0.6 0 0.6 2025 7.4% 44.8% regional 44.8%
Equatorial Guinea Africa Sub-Saharan Africa 154 0.92 0.96 1.03 1.08 1.09 0 0 1.09 2024 80.8% 41.1% regional 41.1%
Eritrea Africa Sub-Saharan Africa 88 0.36 0.37 0.39 0.44 0.4 0 0 0.4 2024 51.9% 41.1% Country/Area 51.9%
Estonia Europe Northern Europe 458.1 3.11 4.32 6.08 2.94 2.77 2.46 0 2.46 2025 61.3% 28.5% regional 28.5%
Eswatini Africa Sub-Saharan Africa 0 0 0 0 0 0 0 0 0 41.1% regional 41.1%
Ethiopia Africa Sub-Saharan Africa 0 0.01 0 0 0 0 0 0 0.01 2020 41.1% regional 41.1%
Finland Europe Northern Europe 2822 7.58 7.66 4.73 3.35 3.01 2.85 0 2.85 2025 11.5% 28.5% regional 28.5%
France Europe Western Europe 11614.7 45.3 43.41 56.19 39.45 27.64 27.61 0 27.61 2025 27.1% 33.7% Country/Area 27.1%
Gabon Africa Sub-Saharan Africa 496 1.5 1.58 1.66 1.67 1.68 0 0 1.68 2024 38.7% 41.1% Country/Area 38.7%
Georgia Asia Western Asia 1168.2 2.82 2.38 3.39 3.45 2.81 2.75 0 2.75 2025 26.9% 43.2% regional 43.2%
Germany Europe Western Europe 35086.8 116.28 112.55 100.7 97.62 98.8 101.58 0 101.58 2025 33.0% 33.7% Country/Area 33.0%
Ghana Africa Sub-Saharan Africa 3979 12.36 14.4 14.85 14.94 15.48 0 0 15.48 2024 44.4% 41.1% Country/Area 44.4%
Gibraltar Europe Southern Europe 0 0 0 0 0 0 0 0 0 29.6% regional 29.6%
Greece Europe Southern Europe 8402.6 23.35 26.79 23.46 19.96 25.71 27.51 0 27.51 2025 37.4% 29.6% Country/Area 37.4%
Guadeloupe Americas Latin America and the Caribbean 211.2 1.01 0.87 0.85 0.86 0 0 0 0.86 2023 46.5% 44.8% Country/Area 46.5%
Guam Oceania Micronesia 198 1.63 1.66 1.66 1.66 1.7 0 0 1.7 2024 98.0% 98.0% Country/Area 98.0%
Guatemala Americas Latin America and the Caribbean 656 0.39 0.76 0.8 2.5 2.5 0 0 2.5 2024 43.5% 44.8% Country/Area 43.5%
Guinea Africa Sub-Saharan Africa 104 0.97 0.98 1.02 1.02 1 0 0 1 2024 109.8% 41.1% regional 41.1%
Guyana Americas Latin America and the Caribbean 72 1.11 1.1 1.25 1.34 1.34 0 0 1.34 2024 212.5% 44.8% regional 44.8%
Honduras Americas Latin America and the Caribbean 1099.8 4.55 4.23 4.5 5.64 5.5 0 0 5.5 2024 57.1% 44.8% Country/Area 57.1%
Hong Kong Asia Eastern Asia 6095.5 22.03 22.46 23.04 24.83 24.45 0 0 24.45 2024 45.8% 34.3% regional 34.3%
Hungary Europe Eastern Europe 3024.5 9.63 10.19 9.32 7.75 7.58 8.55 0 8.55 2025 32.3% 50.7% regional 50.7%
India Asia Southern Asia 28201.7 77.88 63.79 49.65 54.65 60.53 52.64 0 52.64 2025 21.3% 42.4% regional 42.4%
Indonesia Asia South-eastern Asia 25546 58.06 63.2 62.82 68.62 75.9 0 0 75.9 2024 33.9% 38.0% Country/Area 33.9%
Iran Asia Southern Asia 77390.1 305.15 336.54 344.01 349.94 366.66 374.25 0 374.25 2025 55.2% 42.4% regional 42.4%
Iraq Asia Western Asia 44239.3 112.58 116.73 130.83 143.25 147.3 0 0 147.3 2024 38.0% 43.2% Country/Area 38.0%
Ireland Europe Northern Europe 6752.5 17.84 17.26 18.17 16.05 15.99 15.91 0 15.91 2025 26.9% 28.5% Country/Area 26.9%
Isle of Man Europe Northern Europe 87 0 0 0 0 0 0 0 0 28.5% regional 28.5%
Israel Asia Western Asia 13968 49.3 51.4 52.7 55.2 57.8 65.4 0 65.4 2025 53.4% 43.2% Country/Area 53.4%
Italy Europe Southern Europe 48945 146.53 155.14 157.1 131.81 129.37 132.25 0 132.25 2025 30.8% 29.6% Country/Area 30.8%
Jamaica Americas Latin America and the Caribbean 714 3.69 3.77 3.91 4.19 4.3 0 0 4.3 2024 68.7% 44.8% regional 44.8%
Japan Asia Eastern Asia 99241.7 434.75 417.05 424.62 379.48 371.24 363.03 0 363.03 2025 41.8% 34.3% Country/Area 41.8%
Jordan Asia Western Asia 4522.8 16.78 16.45 17.35 18.55 17.97 0 0 17.97 2024 45.4% 43.2% Country/Area 45.4%
Kazakhstan Asia Central Asia 5159.8 23.15 28.69 29.64 33.88 36.45 38.19 0 38.19 2025 84.5% 55.4% regional 55.4%
Kenya Africa Sub-Saharan Africa 565.1 0.75 1.26 1.58 1.31 1.13 1.39 0 1.39 2025 28.1% 41.1% regional 41.1%
Kosovo Europe Southern Europe 0 0.01 0.02 0.02 0.01 0.01 0.01 0 0.01 2025 29.6% regional 29.6%
Kuwait Asia Western Asia 19509.5 74.55 80.59 83.39 87.85 90.42 87.15 0 87.15 2025 51.0% 43.2% Country/Area 51.0%
Kyrgyzstan Asia Central Asia 0 0.13 0.21 0.16 0.25 0.24 0 0 0.24 2024 55.4% regional 55.4%
Latvia Europe Northern Europe 1087 2.08 2.13 1.21 1.42 1.68 1.62 0 1.62 2025 17.0% 28.5% regional 28.5%
Lebanon Asia Western Asia 2684 17.02 9.38 2.38 4.14 3 0 0 3 2024 12.8% 43.2% regional 43.2%
Liberia Africa Sub-Saharan Africa 0 0.32 0.25 0.26 0.26 0.26 0 0 0.26 2024 41.1% regional 41.1%
Libya Africa Northern Africa 14795 29.49 34.78 35.1 33.74 34.58 0 0 34.58 2024 26.7% 41.0% regional 41.0%
Lithuania Europe Northern Europe 1148 2.13 1.68 1.02 0.86 1.16 1.99 0 1.99 2025 19.8% 28.5% regional 28.5%
Macao Asia Eastern Asia 407.2 0.37 0.29 0.29 0.44 0.54 0 0 0.54 2024 15.1% 34.3% regional 34.3%
Madagascar Africa Sub-Saharan Africa 171 1.07 1.22 1.2 0.88 0.9 0 0 0.9 2024 60.1% 41.1% regional 41.1%
Malaysia Asia South-eastern Asia 17992 54.54 62.1 70.09 70.42 72.47 69.96 0 69.96 2025 44.4% 38.0% Country/Area 44.4%
Maldives Asia Southern Asia 142 0.78 0.79 0.79 0.79 0.79 0 0 0.79 2024 63.5% 42.4% regional 42.4%
Mali Africa Sub-Saharan Africa 254 2.33 2.4 2.48 4.82 4.8 0 0 4.8 2024 215.7% 41.1% regional 41.1%
Malta Europe Southern Europe 547.8 1.9 1.95 2 2.03 1.85 1.84 0 1.84 2025 38.3% 29.6% Country/Area 38.3%
Martinique Americas Latin America and the Caribbean 279.6 1.16 1.13 1.1 1.12 0 0 0 1.12 2023 45.7% 44.8% Country/Area 45.7%
Mauritania Africa Sub-Saharan Africa 420 1.16 1.13 1.19 1.64 1.6 0 0 1.6 2024 43.5% 41.1% Country/Area 43.5%
Mauritius Africa Sub-Saharan Africa 0 1.06 1.1 1.53 1.6 1.46 0 0 1.46 2024 41.1% regional 41.1%
Mexico Americas Latin America and the Caribbean 54275.4 229.88 227.2 235.79 254.5 255.48 253.5 0 253.5 2025 53.3% 44.8% Country/Area 53.3%
Moldova Europe Eastern Europe 1168 5.82 6.22 4.82 5.74 5.42 2.07 0 2.07 2025 20.2% 50.7% regional 50.7%
Montenegro Europe Southern Europe 0 0 0 0 0 0 0 0 0 29.6% regional 29.6%
Morocco Africa Northern Africa 1901 4.15 4.84 4.88 6.09 5.87 6.35 0 6.35 2025 38.1% 41.0% Country/Area 38.1%
Mozambique Africa Sub-Saharan Africa 657.6 3.14 3.21 3.19 3.28 3.28 0 0 3.28 2024 56.9% 41.1% regional 41.1%
Myanmar Asia South-eastern Asia 3095.5 7.18 8 11.58 10.17 10.12 0 0 10.12 2024 37.3% 38.0% Country/Area 37.3%
Namibia Africa Sub-Saharan Africa 0 0.01 0 0 0.01 0 0 0 0.01 2023 41.1% regional 41.1%
Netherlands Europe Western Europe 14985.5 77.52 62.02 52.9 50.42 49.22 52.32 0 52.32 2025 39.9% 33.7% Country/Area 39.9%
New Caledonia Oceania Melanesia 253 1.2 1.12 1.14 1.14 1.14 0 0 1.14 2024 51.4% 173.9% regional 173.9%
New Zealand Oceania Australia and New Zealand 1046 6.57 5.36 4.93 3.92 4.97 4.48 0 4.48 2025 48.9% 36.0% regional 36.0%
Nicaragua Americas Latin America and the Caribbean 380 1.14 1.3 1.55 1.7 1.7 0 0 1.7 2024 51.1% 44.8% Country/Area 51.1%
Niger Africa Sub-Saharan Africa 189 0.44 0.5 0.59 0.78 0.75 0 0 0.75 2024 45.3% 41.1% Country/Area 45.3%
Nigeria Africa Sub-Saharan Africa 11008 30.19 31.1 28.61 31.64 28.17 28.53 0 28.53 2025 29.6% 41.1% Country/Area 29.6%
North Macedonia Europe Southern Europe 418 1.23 1.69 1.56 1.91 1.46 1.26 0 1.26 2025 34.4% 29.6% Country/Area 34.4%
Norway Europe Northern Europe 523 2.25 1.03 1.93 2.32 2.19 1.61 0 1.61 2025 35.1% 28.5% Country/Area 35.1%
Oman Asia Western Asia 13625.3 38.1 40.3 40.5 42.8 46.7 50.44 0 50.44 2025 42.3% 43.2% Country/Area 42.3%
Pakistan Asia Southern Asia 20573 57.59 63.9 58.54 48.91 45.53 41.93 0 41.93 2025 23.3% 42.4% regional 42.4%
Palestine Asia Western Asia 140 0.66 0.69 0.68 0.51 0.6 0 0 0.6 2024 48.9% 43.2% Country/Area 48.9%
Panama Americas Latin America and the Caribbean 1489.9 2.05 2.12 2.29 4.7 3.8 0 0 3.8 2024 29.1% 44.8% regional 44.8%
Papua New Guinea Oceania Melanesia 58.8 2.98 3.41 3.62 3.61 3.61 0 0 3.61 2024 700.9% 173.9% regional 173.9%
Peru Americas Latin America and the Caribbean 7139 19.21 21.76 26.64 27.73 23.65 21.96 0 21.96 2025 35.1% 44.8% Country/Area 35.1%
Philippines Asia South-eastern Asia 7120.3 21.97 20.3 20.4 17.97 19.39 22.19 0 22.19 2025 35.6% 38.0% Country/Area 35.6%
Poland Europe Eastern Europe 5317.5 21.52 20.66 16.18 20.81 25.01 31.24 0 31.24 2025 67.1% 50.7% regional 50.7%
Portugal Europe Southern Europe 4651.5 18.92 16.88 18.72 11.78 7 9.77 0 9.77 2025 24.0% 29.6% Country/Area 24.0%
Puerto Rico Americas Latin America and the Caribbean 4944 15.25 15.28 15.59 15.59 15.6 15.32 0 15.32 2025 35.4% 44.8% Country/Area 35.4%
Qatar Asia Western Asia 12577.5 49.26 51.64 54.03 54.37 54.4 54.9 0 54.9 2025 49.8% 43.2% Country/Area 49.8%
Republic of the Congo Africa Sub-Saharan Africa 534 2.93 3.03 3.87 4.1 4.32 0 0 4.32 2024 92.4% 41.1% regional 41.1%
Romania Europe Eastern Europe 3238.8 9.77 10.25 9.66 9.34 9.33 8.61 0 8.61 2025 30.3% 50.7% regional 50.7%
Russia Europe Eastern Europe 115413 478.3 527.3 546.17 547.71 559.57 547.64 0 547.64 2025 54.2% 50.7% Country/Area 54.2%
Rwanda Africa Sub-Saharan Africa 56 0.3 0.37 0.39 0.39 0.4 0 0 0.4 2024 81.5% 41.1% regional 41.1%
Réunion Africa Sub-Saharan Africa 219.6 0.95 1.29 1.33 0.93 0 0 0 0.93 2023 48.3% 41.1% Country/Area 48.3%
Saudi Arabia Asia Western Asia 97807.3 379.98 391.95 407.83 424.53 444.82 0 0 444.82 2024 51.9% 43.2% Country/Area 51.9%
Senegal Africa Sub-Saharan Africa 713.5 4.89 4.91 5.28 6.72 6.02 0 0 6.02 2024 96.3% 41.1% regional 41.1%
Serbia Europe Southern Europe 594 0.56 1.14 1.53 2.04 1.85 2.62 0 2.62 2025 50.4% 29.6% regional 29.6%
Seychelles Africa Sub-Saharan Africa 58 0.52 0.52 0.53 0.53 0.53 0 0 0.53 2024 104.3% 41.1% regional 41.1%
Sierra Leone Africa Sub-Saharan Africa 162 0.01 0.01 0.01 0.01 0.01 0 0 0.01 2024 0.7% 41.1% regional 41.1%
Singapore Asia South-eastern Asia 15326 51.05 53.5 54.02 54.15 56.1 56.28 0 56.28 2025 41.9% 38.0% Country/Area 41.9%
Slovakia Europe Eastern Europe 1076 4.36 5.5 3.18 3.27 3.67 4.01 0 4.01 2025 42.5% 50.7% Country/Area 42.5%
Slovenia Europe Southern Europe 535 0.6 0.59 0.55 0.51 0.5 0.95 0 0.95 2025 20.3% 29.6% regional 29.6%
Somalia Africa Sub-Saharan Africa 65 0.34 0.34 0.34 0.34 0.34 0 0 0.34 2024 59.7% 41.1% regional 41.1%
South Africa Africa Sub-Saharan Africa 3705.3 1.49 3.27 3.68 3.68 1.94 1.95 0 1.95 2025 6.0% 41.1% regional 41.1%
South Korea Asia Eastern Asia 52419.4 168.56 188.33 181.83 176.59 185.13 180.53 0 180.53 2025 39.3% 34.3% Country/Area 39.3%
South Sudan Africa Sub-Saharan Africa 85 0.55 0.56 0.5 0.55 0.55 0 0 0.55 2024 73.9% 41.1% regional 41.1%
Spain Europe Southern Europe 31265 81.86 83.58 97.79 74.84 62.75 72.09 0 72.09 2025 26.3% 29.6% Country/Area 26.3%
Sri Lanka Asia Southern Asia 1305.4 4.27 2.75 2.59 3.28 2.16 2.36 0 2.36 2025 20.7% 42.4% regional 42.4%
Sudan Africa Northern Africa 1390.9 6.05 6.61 4.74 2.76 3 0 0 3 2024 24.6% 41.0% regional 41.0%
Suriname Americas Latin America and the Caribbean 63 1.06 1.08 1.17 0.81 0.82 0 0 0.82 2024 148.6% 44.8% regional 44.8%
Sweden Europe Northern Europe 2619 2.44 3.06 2.88 2.33 2.08 2.08 0 2.08 2025 9.1% 28.5% regional 28.5%
Switzerland Europe Western Europe 55 1.87 1.72 1.58 1.43 1.49 1.5 0 1.5 2025 311.3% 33.7% regional 33.7%
Syria Asia Western Asia 7384.5 20.23 20.87 19.2 24.14 24 0 0 24 2024 37.1% 43.2% Country/Area 37.1%
Taiwan Asia Eastern Asia 23900.8 106.54 116.03 118.84 117.76 129.25 145.3 0 145.3 2025 69.4% 34.3% regional 34.3%
Tajikistan Asia Central Asia 206 0.33 0.31 0.29 0.22 0.2 0.27 0 0.27 2025 15.0% 55.4% regional 55.4%
Tanzania Africa Sub-Saharan Africa 445 4.59 5.46 6.7 7.77 5.93 0 0 5.93 2024 152.1% 41.1% regional 41.1%
Thailand Asia South-eastern Asia 34444.7 114.58 113.83 116.37 130.29 136.65 123.48 0 123.48 2025 40.9% 38.0% Country/Area 40.9%
Timor-Leste Asia South-eastern Asia 255 0 0 0 0 0 0 0 0 38.0% regional 38.0%
Togo Africa Sub-Saharan Africa 165 0.52 0.55 0.72 0.52 0.5 0 0 0.5 2024 34.6% 41.1% Country/Area 34.6%
Trinidad and Tobago Americas Latin America and the Caribbean 2056.6 9.22 9.26 9.49 9.51 9.54 0 0 9.54 2024 53.0% 44.8% Country/Area 53.0%
Tunisia Africa Northern Africa 5451 20.71 21.22 20.76 20.44 20.43 21.41 0 21.41 2025 44.8% 41.0% Country/Area 44.8%
Turkmenistan Asia Central Asia 7087.2 25.76 28.39 32.59 32.59 33 0 0 33 2024 53.2% 55.4% Country/Area 53.2%
Türkiye Asia Western Asia 26302.6 68.41 107.69 72.59 67.42 64.26 79.39 0 79.39 2025 34.5% 43.2% Country/Area 34.5%
Uganda Africa Sub-Saharan Africa 189 0.12 0.13 0.15 0.17 0.17 0 0 0.17 2024 10.3% 41.1% regional 41.1%
Ukraine Europe Eastern Europe 3729.2 14.44 11.07 7.71 0 0 0 0 7.71 2022 23.6% 50.7% regional 50.7%
United Arab Emirates Asia Western Asia 45143 129.77 129.24 127.57 118.42 121.01 0 0 121.01 2024 30.6% 43.2% Country/Area 30.6%
United Kingdom Europe Northern Europe 37039.2 120.73 132.52 136.18 112.48 97.75 103.68 0 103.68 2025 32.0% 28.5% Country/Area 32.0%
United States Americas Northern America 570787.5 1658.51 1614.39 1725.7 1839.19 1900.37 1839.06 0 1839.06 2025 36.8% 37.3% Country/Area 36.8%
Uruguay Americas Latin America and the Caribbean 1102.2 0.81 2.46 1.37 0.97 0.15 0.26 0 0.26 2025 2.7% 44.8% regional 44.8%
Uzbekistan Asia Central Asia 15556.9 56.32 61.46 62.51 63.5 62.8 64.2 0 64.2 2025 47.1% 55.4% Country/Area 47.1%
Venezuela Americas Latin America and the Caribbean 2012.6 17.97 17.22 17.82 6.95 7.1 0 0 7.1 2024 40.3% 44.8% Country/Area 40.3%
Vietnam Asia South-eastern Asia 9770 36.52 27.1 29.94 28.06 22.45 19.9 0 19.9 2025 23.3% 38.0% regional 38.0%
Western Sahara Africa Northern Africa 72 0 0 0 0 0 0 0 0 41.0% regional 41.0%
Yemen Asia Western Asia 1843.9 2.45 2.42 2.52 4.6 4.66 0 0 4.66 2024 28.8% 43.2% regional 43.2%
Zambia Africa Sub-Saharan Africa 105 0.32 0.12 0 0.01 0.34 0 0 0.34 2024 37.0% 41.1% Country/Area 37.0%
Zimbabwe Africa Sub-Saharan Africa 0 0.04 0 0 0 0 0 0 0.04 2020 41.1% regional 41.1%

Lifecycle emissions factor

The Global Oil and Gas Plant Tracker assumes the median lifecycle emissions as reported in the IPCC 5th Assessment Report Annex 3 (2014)[1] of 490 g CO2eq/kWh for a Combined Cycle (CC) gas-fired power plant.

This lifecycle emissions estimate is in line with other reported values, such as:

  • A natural gas combined cycle plant can emit 403–513 g CO2 eq/kWh from a life cycle perspective, 2021 UNECE Report, Carbon Neutrality in the UNECE Region: Integrated Life-cycle Assessment of Electricity Sources.[2]
  • A natural gas combined cycle plant has a life cycle emissions range of 410-650 g CO2 eq/kWh.[3]
  • A natural gas combined cycle life cycle emissions range of 306 - 681 g CO2 eq/kWh.[4]
  • A natural gas combustion turbine life cycle emissions range of 487 - 987 g CO2 eq/kWh.[5]
  • A natural gas combined cycle life cycle emissions of 499.1 g CO2 eq/kWh.[6]

Lifetime of Gas Plant

Lifetime CO2 estimates by GEM's Global Oil and Gas Plant Tracker assume gas plants operate over a 30 year lifetime[7], and 5 years for plants older than 30 years.

Limitations

The following are limitations with the CO2 emissions estimates calculated in GEM's Global Oil and Gas Plant Tracker:

  • Generation data (from Ember) used to calculate country/area-level capacity factor often lags GEM's Global Oil and Gas Plant Tracker data, which is updated twice yearly. For example, the latest generation for a country/area may be for 2022, but the operating capacity is taken from GEM's February 2024 data release.
  • Lifecycle emissions factor assumes constant value for all gas plant technologies. An older gas turbine or steam turbine gas plant may have higher lifecycle emissions than a newer combined cycle gas plant.
  • Capacity factor is applied at the country/area level, not asset level. Depending on the use of the gas plant (ie: peaker vs. baseload) the actual capacity factor at the asset level may vary.

Articles and Resources

References

  1. "IPCC 5th Assessment Report, Annex III, Technology-specific Cost and Performance Parameters" (PDF). Intergovernmental Panel on Climate Change (IPCC). Retrieved August 25, 2022. {{cite web}}: line feed character in |title= at position 68 (help)CS1 maint: url-status (link)
  2. "Carbon Neutrality in the UNECE Region: Integrated Life-cycle Assessment of Electricity Sources" (PDF). United Nations Economic Commission for Europe. 2021. {{cite web}}: line feed character in |title= at position 39 (help)CS1 maint: url-status (link)
  3. "Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change" (PDF). {{cite web}}: line feed character in |title= at position 92 (help)CS1 maint: url-status (link)
  4. "The role of natural gas and its infrastructure in mitigating greenhouse gas emissions, improving regional air quality, and renewable resource integration". Progress in Energy and Combustion Science. 64. 2018-01-01. doi:10.1016/j.pecs.2017.10.002. ISSN 0360-1285.
  5. "The role of natural gas and its infrastructure in mitigating greenhouse gas emissions, improving regional air quality, and renewable resource integration". Progress in Energy and Combustion Science. 64. 2018-01-01. doi:10.1016/j.pecs.2017.10.002. ISSN 0360-1285.
  6. "Life Cycle Assessment of a Natural Gas Combined-Cycle Power Generation System" (PDF). National Renewable Energy Laboratory.{{cite web}}: CS1 maint: url-status (link)
  7. "Combined-Cycle Plant Life Assessment" (PDF). Sargent & Lundy.{{cite web}}: CS1 maint: url-status (link)