Last reviewed on November 2, 2011 at 10:05

Documentation of California's Greenhouse Gas Inventory (First Edition - Last updated on 11/19/2007)

♦ Category: Energy

IPCC: 1A4b - Fuel Combustion Activities - Other Sectors - Residential
Sector: Residential : Household Use

♦ Activity: Fuel combustion - Wood (wet)

♦ Greenhouse gas: Methane ( CH4 )

► Year 1990 —

● Greenhouse gas emission estimate —

Amount: 19,050 tonnes of CH4 Emitted (400,050 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Fuel combustion] * [Heat content] * [Fuel CH4 emission]
Reference: IPCC (1997). Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories (Revised Guidelines). Intergovernmental Panel on Climate Change. Published: IGES, Japan.

● Activity level used in calculations —

Activity: Fuel combustion = 7,937,500 ton of Wood (wet)
Basis: Data
Reference: EIA (2007). Energy Information Administration. State Energy Consumption, Price, and Expenditure Estimates (SEDS). Available online at:

● Parameters and Constants used in calculations —

Parameter: Fuel CH4 emission = 3.000E-04 g / btu
Reference: IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programme, Eggleston H.S., Buendia L., Miwa K., Ngara T., and Tanabe K. (eds). Volume 2, Chapter 2: Energy.
Parameter: Heat content = 8,000,000 btu / ton
Reference: EIA (2007). Energy Information Administration. Form EIA-906 Database: Monthly Utility Power Plant Database. CA Air Resources Board staff used the average value (rounded to 1 significant digit) of values for Utility Power Plant Wood. Available online at:
Constant: Global warming potential of CH4 = 21
Reference: IPCC (1996). Second Assessment Report. Climate Change 1995: WG I - The Science of Climate Change. Intergovernmental Panel on Climate Change; J.T. Houghton, L.G. Meira Filho, B.A. Callander, N. Harris, A. Kattenberg, and K. Maskell (eds.); Cambridge University Press. Cambridge, U.K.

● Greenhouse gas emitted per unit activity —

Amount: 2,400 g (i.e. 2.4 kg) of CH4 per ton of Wood (wet)
50,400 g (i.e. 50.4 kg) of CO2eq. per ton of Wood (wet)