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The content of this This page explains how emissions from individual facilities are aggregated to totals by industry type in our data settotals. InTo most cases, this is a straight forward exercise but in the case of facilities who report GHG emissions from several distinct processes this can be complicated. To view learn about what industry groups a facility's are placedfalls in, visit [ghgp:Understanding Facility Types].

MostA reporters covered by the Greenhouse Gas Reporting Program solely report direct emissions occurring at the facility. These entities are the ones most prominently displayed on ghgdata.epa.gov in the direct emitters portion of the tool. Other facilities solely report GHG quantities associated with products supplied (e.g. certain fossil fuels and industrial gases). Data reported by these entities is included in a separate portion of ghgdata.epa.gov because the GHG quantities reported by these entities do not take place at the facility, but take place at the location where the product is combusted, oxidized or used. There is a relatively small number of entities who report BOTH direct GHG emissions and GHG data associated with products supplied. It is important to note that direct GHG emissions reported by facilities and GHG quantities associated with products supplied are never aggregated to a facility total in this data set. All data shown in the direct emitters portion of the tool is direct GHG emissions only.

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The following explains how direct GHG emissions reported by facilities are aggregated to the totals for each industry grouping displayed on ghgdata.epa.gov. In the simplest case, where facilities report emissions from only one process, the total emissions reported by that facility are included in the appropriate industry groups total emissions. This is often the case for landfills, and for some facility's who only report emissions from the combustion fossil fuels. For facilities that only reported GHG emissions from fossil fuel   combustion in 2010, the emissions are included in the total for their   industry group as defined .   The Government and Commercial and Other Industrial industry groups are   solely made up of facilities who 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 only (note that some stationary combustion only facilities   are included in other industry groups as well).

Most facilities covered by the Greenhouse Gas Reporting Program reported emissions in 2010 from stationary combustion of fossil fuels 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 other processprocesses are generally referred to as 'process' emissions. TheIn totalthese emissionscases, forALL eachthe industryemissions typefrom presentedthe infacility ourare dataallocated setto includethe bothindustry processtype emissions and emissions fromassociated with the combustionprocess of fossil fuels.emissions.  For example, thefor totala emissionsfacility displayed forwith the iron and steel industryprocess includes both emissions fromand fossilstationary fuelscombustion combustedemissions, atthe thosetotal facilitiesemissions asfor wellthe asfacility processare emissionsassigned inherent to the production of 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 which case it reports the emissions from electricity generation separate fro the emissions from iron and steel production. In these cases, EPA includes the emissions associated with electricity generation in the electricity generation industry's total, and the emissions from iron and steel production in the totaliron forand thatsteel industry.The facility is hence classified as both types, but its emissions are distributed to the two industry groups as appropriate.

Things begin to become complex in the case of facilities that  total.  

In a small number of cases, facilities report emissions from stationary combustion as well as 2two or more other processes. Facilities report their total GHG emissions from stationary combustion, but do not report the quantity of emissions associated with unique processes at the facility. 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, but does not report the quantity of combustion emissions associated with the facility's refining operations and petrochemical operations separately.As such, EPA is unable to determine the portion of the facility'sstationary reportedcombustion emissions from stationary combustion that should be included in each industry group's total. In these cases, EPA attributes 100% of the reported stationary combustion emissions to the industry type considered to be most fossil fuel intensive. The table 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.

{note}Note that emissions from miscellaneous use of carbonate are distributed to industry groups using a logic consistent with how emissions from stationary combustion of fossil fuel are distributed.{note}

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*# Petroleum Refining
*# Cement Production
*# Iron & Steel Production
*# Pulp and Paper Manufacturing
*# Aluminum Production
*# Petrochemical Production
*# Soda Ash Production
*# Ammonia Manufacturing
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*# Adipic Acid Production
*# Lime Manufacturing
*# Lead Production
*# Ferroalloy Production
*# Glass Production
*# Zinc Production
*# Titanium Dioxide Production
*# Silicon Carbide Production
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*# Hydrogen Production
*# Landfills
*# HCFC22 ProdProduction/HFC23 Dest.Destruction
*# Phosphoric Acid Production
*# Nitric Acid Production
*# Electricity Generation
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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
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