In early February the Canadian Environmental Assessment Office released a report on the Woodfibre LNG facility. According to that report greenhouse gas (GHG’s) emissions amount to 129 kilo tones/year from the project and approximately 790 kilo tones/year from upstream activities. My internet search indicates that the total amounts to about 1.5% of annual greenhouse gas emissions in British Columbia.
The published report does not attempt to calculate downstream emissions. If the LNG replaces coal, it would reduce GHG’s as natural gas has about half the GHG’s as coal for the same amount of energy. With a total LNG output of 2.1 megatonnes the GHG emission reduction can be calculated using the ration of the molecular weights of methane and CO2. By these calculations, the emission reduction would be about 5.8 megatonnes per year or roughly 6 times the total GHG emissions of the plant and the upstream activities associated with producing the natural gas.
Exporting LNG from BC will very likely have a very favorable impact on global GHG emissions.
Daniel Potts, Retired, West Vancouver (604) 913-0600