methane
gas gasPure methane (CH4) physical properties from the DESNZ 2025 'Fuel properties' sheet. DESNZ lists NO combustion CO2/CO2e factor for pure methane as a distinct row (it is a properties reference). No emission factor is attached here rather than reusing natural gas's (which is a grid mix, not pure CH4) — a combustion CO2 for methane is therefore 'not available' in v0.1 sources. IPCC has no separate methane row either; natural gas is the closest analog.
- Pure methane is treated numerically close to natural gas but is NOT identical to the UK grid mix. No combustion CO2/CO2e factor is available for pure methane in the v0.1 sources, so emissions show 'not available'.
Density
0.716 kg/m³
at gas phase; reference T/P NOT stated by DESNZ
Heating values
Emission factors
Not available. CO₂ and CO₂e factors are shown only when a cited source exists — never derived.
Worked example
Open in converter →Energy
Same energy expressed in other units.
Mass
Volume
Emissions — context required
CO₂ and CO₂e are separate — never derived from each other.
Not available: methane has no emission factor in the data set. No value is invented.
Energy density
Energy per unit of mass or volume.
Assumptions
- density: assumed methane density 0.716 kg/m³ at gas phase; reference T/P NOT stated by DESNZ
- heating value basis: energy on LHV/NCV basis, 50 MJ/kg
- heating value basis: energy on HHV/GCV basis, 55.406 MJ/kg
Sources
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