Chart of PC1 (Unit 1), PC2 (Unit 2), and Total by Month (2015 thru 2023-06)

Our source spreadsheet for the above chart is PSEC_NetGeneration.xlsx based on U.S. Energy Information Administration data downloaded at Form EIA-923 detailed data with previous form data (EIA-906/920) – U.S. Energy Information Administration (EIA)

For the full years 2015 thru 2022, Prairie State Unit 1 had a total of 392 days where it did not produce any electricity generation which is an average of 49 days per year. Prairie State Unit 2 had a total of 383 days where it did not produce any electricity generation which is an average of 48 days per years. These days with zero generation include both planned and unplanned outage days. See our spreadsheet PSEC_UnitDays_ZeroGeneration.xlsx based on U.S EPA Clean Air Markets data downloaded at Custom Data Download | CAMPD | US EPA