wood
solid biomassDESNZ 2025 Wood Logs. Scope-1 CO2e (CH4+N2O only; biogenic CO2 netted to zero) is a separate factor from the biogenic combustion CO2 (reported 'outside of scopes'). IPCC 2006 Wood/Wood Waste NCV 15.6 MJ/kg (range 7.9–31.0), raw combustion CO2 112,000 kg/TJ (before biogenic accounting) — NOT directly comparable to the DESNZ split.
- Wood energy content depends strongly on species and MOISTURE content — a fresh/green log holds far less usable energy than seasoned wood. Treat the figure as a representative value.
- Biogenic CO2 from wood combustion is reported on a SEPARATE line ('outside of scopes'), not folded into the Scope-1 total — it is not silently zeroed.
Density
425 kg/m³
at stacked/bulk, as sold
Heating values
LHV/NCV
HHV/GCV
Emission factors
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO2e | 0.04698508 kg co2e per kg | Scope 1 (direct) | UK · 2025 | |
| biogenic CO2 | 1.43623 kg co2 per kg | Scope 3 upstream | UK · 2025 |
CO₂ ≠ CO₂e — separate metrics, never converted into one another. Why? →
Worked example
Open in converter →Converting
1 kg · wood
Energy
Same energy expressed in other units.
14.71 MJ
source-based
4.086 kWh
source-based
0.01471 GJ
source-based
13,940 BTU
source-based
16.26 MJ
source-based
4.516 kWh
source-based
0.01626 GJ
source-based
15,410 BTU
source-based
Mass
1,000,000 mg
exact
1,000 g
exact
1 kg
exact
0.001 t
exact
2.20462 lb
exact
Volume
2.353 L
source-based
Emissions
CO₂ and CO₂e are separate — never derived from each other.
~0.047 kg CO2e
region + year
~1.44 kg CO2
region + year
Energy density
Energy per unit of mass or volume.
14.71 MJ/kg
source-based
Assumptions
- density: assumed wood density 425 kg/m³ at stacked/bulk, as sold
- heating value basis: energy on LHV/NCV basis, 14.71 MJ/kg
- heating value basis: energy on HHV/GCV basis, 16.256 MJ/kg
Sources
Follow each source back to its primary document — that traceability is the point. How conversions work →