How many years of comparable data are there for Japan and Portugal?

55 years are reported by both, from 1970 to 2024.

Where does this data come from?

Statizoid (derived), published as Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Japan vs Portugal: Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per

Japan

0 Mt CO2e per US$ of GDP

in 2024

Portugal

0 Mt CO2e per US$ of GDP

in 2024

Japan rank

64th

Portugal rank

67th

Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per over time

Japan
Portugal

How they compare

Japan currently reports 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Portugal, a difference of 0 Mt CO2e per US$ of GDP.

The two have swapped places 3 times across 55 shared years of data; in 1970 it was Portugal ahead.

Japan ranks 64th and Portugal ranks 67th of 191 countries.

Across the 6 decades both report, Japan averaged higher in 1 and Portugal in 5.

Head to head by decade

Decade	Japan	Portugal	Difference	Ahead
1970s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Japan
1980s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Portugal
1990s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Portugal
2000s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Portugal
2010s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Portugal
2020s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Portugal

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions from power industry (energy) (mt co2e), per, Japan or Portugal?: Japan, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Portugal as of 2024.
What is the difference in methane (ch4) emissions from power industry (energy) (mt co2e), per between Japan and Portugal?: 0 Mt CO2e per US$ of GDP, with Japan ahead.
How many years of comparable data are there for Japan and Portugal?: 55 years are reported by both, from 1970 to 2024.
How do Japan and Portugal rank globally for methane (ch4) emissions from power industry (energy) (mt co2e), per?: Japan ranks 64th and Portugal ranks 67th of 191 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Japan vs Portugal: Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 23 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-power-industry-energy-mt-co2e-per-unit-of-gdp/japan/portugal/

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About this data

Indicator: Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per unit of GDP
Unit: Mt CO2e per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 238 places, 12,139 data points, 1970–2024
Last refreshed: 21 September 2026

Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.