{anchor:Back to Top}This page explains how emissions from individual facilities are aggregated to industry totals. To learn about what industry groups a facility falls in, visit [Understanding Facility Types].

A large number of facilities only report emissions from a single activity at the facility.  In such cases, ALL the emissions from the facility are allocated to the industry type associated with the facility.  

Other facilities reported emissions from stationary combustion as well as some other type of process occurring at the facility (such as petroleum refining, iron and steel production, cement production, etc.). GHG emissions from these other processes are generally referred to as 'process' emissions. In these cases, ALL the emissions from the facility are allocated to the industry type associated with the process emissions.  For example, for a facility with iron and steel process emissions and stationary combustion emissions, the total emissions for the facility are assigned to the iron and steel industry.

In some cases, a facility may report emissions from two separate and unique processes, but no emissions from stationary combustion. For example, a facility may be both a power plant and an iron and steel mill. In these cases, EPA includes the emissions associated with electricity generation in the electricity generation industry total, and the emissions from iron and steel production in the iron and steel industry total.  

In a small number of cases, facilities report emissions from stationary combustion as well as two or more other processes. For example, a refinery who also produces petrochemicals would report the total process emissions from petroleum refining, the total process emissions from petrochemical production and the total emissions from stationary combustion. EPA is unable to determine the portion of the stationary combustion emissions that should be included in each industry group's total. In these cases, EPA attributes 100% of the stationary combustion emissions to the industry type considered to be most fossil fuel intensive. The list below shows the hierarchy of industry types considered. In the case where a facility reports emissions from 2 or more of the process listed below, the emissions from stationary combustion are attributed to the highest ranking process on this list.


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# Petroleum Refining
# Cement Production
# Iron & Steel Production
# Pulp and Paper Manufacturing
# Aluminum Production
# Petrochemical Production
# Petroleum and Natural Gas Systems: Liquefied Natural Gas (LNG) Import/Export
# Petroleum and Natural Gas Systems: Gas Processing
# Petroleum and Natural Gas Systems: Transmission/Compression
# Petroleum and Natural Gas Systems: Offshore Production
# Petroleum and Natural Gas Systems: Underground Storage
# Petroleum and Natural Gas Systems: LNG Storage 
# Soda Ash Production
# Ammonia Manufacturing
# Adipic Acid Production
# Lime Manufacturing
# Lead Production
# Magnesium Production
# Ferroalloy Production
# Glass Production
# Zinc Production
# Titanium Dioxide Production
# Silicon Carbide Production
# Underground Coal Mines
# Hydrogen Production
# Electronics Manufacturing
# Fluorinated Gas Production
# Municipal Solid Waste Landfills
# HCFC22 Production/HFC23 Destruction
# Phosphoric Acid Production
# Nitric Acid Production
# Electricity Generation
# Petroleum and Natural Gas Systems: Local Distribution
# Petroleum and Natural Gas Systems: Onshore Production
# General Stationary Fuel Combustion
# Industrial Wastewater Treatment
# Industrial Waste Landfills
# Electrical Equipment Manufacturer and Refurbishment
# Electrical Transmission and Distribution
# Miscellaneous Uses of Carbonates
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Source: This page was derived from th Data Publication Factsheet dated December 2011

Approval / Publishing History: Version 1

Expiration : Factsheet was not final when this was extract, as soon as its final this should be updated
{info}{center}{_}Authoring Notes Panel For Internal Use - Not Visible to the Public{_}{center}{show-to}