NATCARB
CO2 Stationary Sources
CO2 Stationary Source Emission Estimation Methodology
DOE's Regional Carbon Sequestration Partnerships (RCSPs) employed carbon dioxide (CO2) emissions estimate methodologies that are based on the most readily available representative data for that particular industry type within the respective partnership area. Carbon dioxide emissions data provided by databases (for example, eGRID, IEA GHG, or NATCARB) were the first choice for all of the RCSPs, both for identifying major CO2 stationary sources and for providing reliable emission estimations. Databases are considered to contain reliable and accurate data obtained from direct emissions measurements via continuous emissions monitoring (CEM) systems. One drawback of formal databases can be the delay between data collection and publication, but this does not present a significant problem for the RCSPs as the dates of information are clear. When databases were not available, stationary source facility production or fuel usage were coupled with CO2 emissions factors to estimate annual CO2 emissions from the production or fuel usage data. Emissions factors, fuel usage data, and facility production data were obtained from various databases, websites, and publications. Stationary source spatial location data (latitude and longitude) were determined from a variety of sources. Some databases (eGRID) contain latitude and longitude information for each stationary source. Where spatial location information was not available through an emissions database, other spatial location methods were utilized. These include the use of mapping tools (Google Earth, TerraServer, and USGS Digital Orthophoto Imagery) equipped with geospatially defined data, along with web-based databases (Travelpost) containing latitude and longitude information for various U.S. locations.
More information on the RCSPs' CO2 stationary source methodology is available in Atlas III's Appendix A: CO2 Stationary Source Emission Estimations Methodologies Summary. Detailed CO2 stationary source data is available in Atlas III's Appendix C: CO2 Stationary Source and Geologic Storage Resource Estimates by States/Province.
All data, metadata, and high resolution jpgs are available on NATCARB's Data Download and Custom Maps Request webpage.
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United States and Canadian
CO2 Stationary Sources. (click image to enlarge) |
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There are two types of CO2 emission sources: stationary sources and non-stationary sources. Carbon dioxide stationary source emissions come from a particular, identifiable, source, such as a power plant, while non-stationary source emissions include CO2 emissions from the transportation sector and other diffuse sources. Carbon dioxide emissions from stationary sources can be separated from stack gas emissions and subsequently transported to a geologic storage injection site. The “United States and Canadian CO2 Stationary Sources” map displays the location and relative magnitude of a variety of CO2 stationary sources.
According to the U.S. Environmental Protection Agency (EPA), total U.S. greenhouse gas (GHG) emissions were estimated at 6,960 million metric tons (7,670 million tons) CO2 equivalent in 2008. This estimate includes CO2 emissions, as well as other GHGs, such as methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. Annual GHG emissions from fossil fuel combustion, primarily CO2, were estimated at 5,570 million metric tons (6,140 million tons) with 3,780 million metric tons (4,170 million tons) from stationary sources.
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The "CO2 Stationary Source Emissions by Category" pie chart contains values, gathered by the RCSPs and NATCARB (illustrated on the "United States and Canadian CO2 Stationary Sources" map), showing that CO2 stationary source emissions result largely from power generation, energy use, and industrial processes. |
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CO2 Stationary Source
Emissions by Category. (click image to enlarge) |
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While not all potential GHG sources have been examined, NETL’s RCSPs have documented the location of 4,507 CO2 stationary sources with total annual emissions of 3,470 million metric tons (3,825 million tons) of CO2 in the United States. In Canada, the locations of CO2 stationary sources with total annual emissions of 350 million metric tons (385 million tons) of CO2 were also identified. The “CO2 Stationary Source Emissions by RCSP and Canada” pie chart displays the amount of CO2 stationary source emissions identified by each RCSP. |
CO2 Stationary Source Emissions
by
RCSP and Canada. (click image to enlarge) |
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