Emissions Intensity
Per-MWh emissions rates before and after 202(c) orders, across three pollutants. Rates are generation-weighted across all hours the unit was producing electricity. No control technology changes were observed for any unit during the data period — rate shifts reflect operational patterns (output level, cycling frequency), not equipment changes.
Units with zero post-order generation (Craig C1, Schahfer 18) appear with pre-order bars only. Centralia post-order is based on only 73 generating hours — interpret with caution.
Operating output and emissions rate changes
Median gross output (MW) when generating, and per-MWh emissions rates. No control technology changes observed for any unit.
⚠ = fewer than 200 generating hours post-order (small sample — interpret with caution). Output = median gross generation in MW during generating hours.
CO₂ rate quarterly trend
11 quarter-unit observations excluded where total quarterly generation was below 2,000 MWh — these were failed-startup attempts where the boiler burned fuel at near-zero output, producing per-MWh rates 5–10× above steady-state. Excluded: Centralia 2024 Q2; Campbell 2 2024 Q1; Eddystone 3 and 4 in several low-generation quarters.
Key findings
References
Note on AI-generated content: Key Findings narrative interpretations were drafted with AI assistance based on the underlying CAMPD data and the references above. Readers are encouraged to verify specific factual claims against the cited sources. Quantitative values are derived directly from the EPA CAMPD hourly dataset; interpretive framing reflects judgments that should be independently checked.