EPA Clean Air Markets Emissions Data, 1997 - 2018

<b>Project Title:</b> EPA Clean Air Markets Emissions Data, 1995 - 2018 The EPA Clean Air Markets Emissions Data is maintained by the EPA’s Clean Air Markets Division. Continuous monitoring and reporting of sulfur dioxide (SO2), carbon dioxide (CO2), and nitrogen oxide (NOx) emissions is required for sources regulated under Part 75 of Volume 40 of the Code of Federal Regulations, also known as the continuous emissions monitoring rule.[1] This was established in 1990 under Title IV of the Clean Air Act. This regulation was published in January 1993 to establish the continuous emission monitoring (CEM) and reporting requirements for the EPA’s Acid Rain Program (ARP) which was a part of the Clean Air Act. This program is required for electric generating units that burn fossil fuels such as coal, oil, and natural gas and that serve a generator larger than 25 megawatts. Part 75 requires hourly emissions accounting through the use of continuous emission monitoring systems (CEMS) unless a unit qualifies for an alternative monitoring methodology.[2] <br><br>These EPA data were downloaded from EPA Clean Air Markets Data https://ampd.epa.gov/ampd/ as of June 1, 2020. There are options to download prepackaged data or to customize your data query. For this data acquisition, FTP was used to download the prepackaged data at an hourly emissions by month level. All emissions data from 1995 to 2018 were downloaded. The file "datadefinition_04-25-2021_161016484.csv" serves as a codebook (downloaded April 25, 2021).<br><br>The data are provided here thanks to the efforts of Paige Weber (UNC), and are provided as-is, without guarantees or support. <br><br><b>Original Distribution URL:</b> https://ampd.epa.gov/ampd/ <br><br><b>Scope of the Project Universe:</b> Electric generating units that burn fossil fuels such as coal, oil, and natural gas and that serve a generator larger than 25 megawatts, 1995-2018. Unit(s) of observation: electric generating units larger than 25 MW Geographic unit: contiguous United States (does not include Hawaii and Alaska)<br>[1] United States Environmental Protection Agency, Emissions Monitoring, Accessed on April 18, 2020 at: https://www.epa.gov/airmarkets/emissions-monitoring.[2] U.S. Environmental Protection Agency, Clean Air Markets Division, Plain English Guide to the Part 75 Rule, June 2009.<br>