The Greenhouse Gas Protocol Initiative: GHG Emissions from Stationary Combustion
The Greenhouse Gas Protocol tool for stationary combustion is a free Excel spreadsheet calculator designed to calculate GHG emissions specifically from the combustion of fuels in stationary sources such as boilers and furnaces. The methodologies embedded in the tool are based on the Greenhouse Gas Protocol developed by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD). Stationary combustion emissions are most frequently classified as scope 1 emissions. This calculator can be used to develop a GHG emissions baseline specifically for a community's stationary combustion sources and to develop annual inventories to assist in the tracking of emissions thereafter.
Inputs and Outputs
Inputs include: The user must input information about the stationary combustion emissions source, including the sector in which the source is used (e.g., residential, energy, forestry, etc.), the fuel type, and quantity of fuel consumed. The user may also input custom fuels and emissions factors if the community uses fuels that are not included in the tool's defaults.
Outputs include: The tool outputs greenhouse gas emissions for each source as well as total emissions for all stationary combustion sources. Biomass emissions are reported separately.
GHG Protocol's stationary combustion tool relies on IPCC emission factors and global warming potentials, so this tool may be used internationally.
This tool includes a user friendly guide to definitions of fuels and a sector included in the tool and provides instructions and citations for every calculation step. Users can access the full methodology embedded in the tool through an accompanying guidance document. 
This tool represents one of the Greenhouse Gas Protocol Initiative's several cross-sector spreadsheets can be used separately or in conjunction to develop a GHG inventory of various emissions sources within a community. Separate calculators are available for emissions from purchased electricity, transport or mobile sources, refrigeration and air conditioning equipment, and several industrial sectors.