How many years of comparable data are there for Nigeria and Sierra Leone?

54 years are reported by both, from 1970 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.

Nigeria vs Sierra Leone: Methane (CH4) emissions from Building (Energy) (Mt CO2e), per square

Nigeria

0 Mt CO2e per square kilometre

in 2023

Sierra Leone

0 Mt CO2e per square kilometre

in 2023

Nigeria rank

24th

Sierra Leone rank

22nd

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

Nigeria
Sierra Leone

How they compare

Sierra Leone currently reports 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Nigeria, a difference of 0 Mt CO2e per square kilometre.

Across all 54 years both countries report, Sierra Leone has been ahead every year.

Nigeria ranks 24th and Sierra Leone ranks 22nd of 197 countries.

Sierra Leone has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Nigeria	Sierra Leone	Difference	Ahead
1970s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
1980s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
1990s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2000s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2010s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2020s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone

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, Nigeria or Sierra Leone?: Sierra Leone, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Nigeria as of 2023.
What is the difference in methane (ch4) emissions from building (energy) (mt co2e), per square between Nigeria and Sierra Leone?: 0 Mt CO2e per square kilometre, with Sierra Leone ahead.
How many years of comparable data are there for Nigeria and Sierra Leone?: 54 years are reported by both, from 1970 to 2023.
How do Nigeria and Sierra Leone rank globally for methane (ch4) emissions from building (energy) (mt co2e), per square?: Nigeria ranks 24th and Sierra Leone ranks 22nd 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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Nigeria vs Sierra Leone: 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/nigeria/sierra-leone/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-building-energy-mt-co2e-per-square-kilometre/nigeria/sierra-leone/">Nigeria vs Sierra Leone: 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.