{
  "url": "https://www.epa.gov/power-sector/progress-report-emissions-reductions",
  "retrievedAt": "2026-10-17T08:08:20.043Z",
  "sha256": "2d6d602c979a4dd3485e14c7892ce44d952a4cfcea8e70c2c024eab02b7f3384",
  "figure": "Figure 4: Comparison of SO2 Emissions and Generation, fuel-specific series",
  "years": [
    2000,
    2001,
    2002,
    2003,
    2004,
    2005,
    2006,
    2007,
    2008,
    2009,
    2010,
    2011,
    2012,
    2013,
    2014,
    2015,
    2016,
    2017,
    2018,
    2019,
    2020,
    2021,
    2022,
    2023
  ],
  "series": {
    "so2CoalDataTop": [
      10707589,
      10055246,
      9865496,
      10149151,
      9841549,
      9835384,
      9240311,
      8764796,
      7514057,
      5653331,
      5051638,
      4478888,
      3267930,
      3194102,
      3105147,
      2185019,
      1465798,
      1316450,
      1237424,
      952180,
      770281,
      927253,
      834239,
      639136
    ],
    "so2CoalDataBottom": [
      2014141164,
      1946276123,
      1966888180,
      2018352250,
      2021197052,
      2058988791,
      2039272267,
      2061841197,
      2027959218,
      1819291910,
      1918277344,
      1808118031,
      1584916611,
      1660636289,
      1656998215,
      1433366404,
      1320277012,
      1285802128,
      1227456385,
      1032277454,
      832509441,
      963991138,
      906902785,
      743193014
    ],
    "so2GasDataTop": [
      108146,
      147855,
      61730,
      104548,
      105748,
      91377,
      40321,
      44848,
      29087,
      22608,
      19397,
      6521,
      6704,
      5868,
      7717,
      8444,
      9327,
      7684,
      10010,
      5953,
      5488,
      7960,
      9106,
      6404
    ],
    "so2GasDataBottom": [
      366636640,
      404375732,
      428904777,
      424387336,
      474654252,
      595509907,
      628324800,
      714632070,
      706606532,
      758352516,
      810625123,
      846988073,
      1050913794,
      974466475,
      980088223,
      1191630846,
      1238564059,
      1174496424,
      1349290456,
      1462538809,
      1508415933,
      1459017785,
      1562252167,
      1680762424
    ],
    "so2OilDataTop": [
      384430,
      431970,
      263340,
      337250,
      308046,
      292159,
      104371,
      116568,
      64341,
      37943,
      27918,
      10714,
      3800,
      5910,
      8918,
      10579,
      2664,
      2046,
      4578,
      1010,
      649,
      735,
      3368,
      972
    ],
    "so2OilDataBottom": [
      93302790,
      93215807,
      75284942,
      75011271,
      72675422,
      75657106,
      39358066,
      44327406,
      33319568,
      25080809,
      27165353,
      20132607,
      19536727,
      13198979,
      14068619,
      17247903,
      14060787,
      6358729,
      8450213,
      3958215,
      2180465,
      2042937,
      3573701,
      2697225
    ],
    "so2OtherDataTop": [
      1332,
      1799,
      4281,
      3789,
      3864,
      3714,
      7499,
      7304,
      8964,
      8319,
      21802,
      7180,
      5586,
      6532,
      5838,
      12212,
      12328,
      11711,
      11896,
      10008,
      10774,
      6530,
      4953,
      3847
    ],
    "so2OtherDataBottom": [
      2296490,
      2656505,
      1672492,
      902315,
      1748406,
      1716096,
      2031195,
      2517899,
      2877085,
      2875301,
      3832958,
      5334007,
      4633171,
      6649203,
      8080785,
      7245485,
      7074216,
      7249505,
      7509531,
      5676098,
      5806498,
      6772544,
      5989504,
      3776143
    ]
  },
  "units": {
    "Top": "US short tons of sulfur dioxide",
    "Bottom": "megawatt-hours of electricity"
  },
  "sourceScopeNote": "The data reflect totals for units required to comply with each program in each respective year. CSAPR-only SO2 units are not included before 2015. Fuel type represents primary fuel type; units might combust more than one fuel."
}