Greenhouse Gas Emissions from Home Energy use

Fuels like LPG, charcoal and gasoline are used at home for several purposes, like cooking and/or heating. The combustion of these fuels produces direct greenhouse gas emissions of carbon dioxide, methane and nitrous oxide.
To estimate the direct emissions from these fuels, the following formula is used:

GHG Emissions per GHG = Activity data x Emission Factor per GHG

The activity data used is the amount of fuel (kilograms or Liters, whatever is applicable). For the emission factors, default values of the IPCC guidelines (See Volume 2, Chapter 2) were used.
On the other hand, electricity use contributes to indirect emissions (Scope 2). The estimation method for this is:

CO2 equivalent emissions from electricity use = Activity data x Grid Emission Factor

Activity data for emissions from electricity is the amount of electricity used, in kilowatt-hours (kWh). The grid emission factor used is from the Philippine Department of Energy.