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

32 years are reported by both, from 1992 to 2023.

Where does this data come from?

Statizoid (derived), published as Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Estonia vs Portugal: Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square

Estonia

0 Mt CO2e per square kilometre

in 2023

Portugal

0 Mt CO2e per square kilometre

in 2023

Estonia rank

68th

Portugal rank

66th

Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square over time

Estonia
Portugal

How they compare

Portugal currently reports 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Estonia, a difference of 0 Mt CO2e per square kilometre.

The two have swapped places 4 times across 32 shared years of data; in 1992 it was Portugal ahead.

Estonia ranks 68th and Portugal ranks 66th of 197 countries.

Across the 4 decades both report, Estonia averaged higher in 2 and Portugal in 2.

Head to head by decade

Decade	Estonia	Portugal	Difference	Ahead
1990s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Portugal
2000s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Portugal
2010s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Estonia
2020s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Estonia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions from building (energy) (mt co2e), per square, Estonia or Portugal?: Portugal, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Estonia as of 2023.
What is the difference in methane (ch4) emissions from building (energy) (mt co2e), per square between Estonia and Portugal?: 0 Mt CO2e per square kilometre, with Portugal ahead.
How many years of comparable data are there for Estonia and Portugal?: 32 years are reported by both, from 1992 to 2023.
How do Estonia and Portugal rank globally for methane (ch4) emissions from building (energy) (mt co2e), per square?: Estonia ranks 68th and Portugal ranks 66th of 197 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Estonia vs Portugal: Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square. Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-building-energy-mt-co2e-per-square-kilometre/estonia/portugal/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-building-energy-mt-co2e-per-square-kilometre/estonia/portugal/">Estonia vs Portugal: Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square</a> — Statizoid

About this data

Indicator: Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square kilometre
Unit: Mt CO2e per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 244 places, 12,543 data points, 1970–2023
Last refreshed: 22 September 2026

Methane (CH4) emissions from Building (Energy) (Mt CO2e) divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.