Open Grid Emissions Initiative

This release primarily fixes a bug that affected the quality of the CO2 emissions data for multiple regions in the Southeastern U.S., namely AEC, SOCO, and TVA. This bug resulted in substantial (>1%) errors in the emission totals and rates for these regions. This bug also affected the CO2 data for a handful of individual plants in MISO, PJM, ERCO, CPLE, SWPP, DUK, and NYIS.

This release includes multiple improvements:

• Fixes a bug that was assigning CO2 data from CEMS to the wrong rows when attempting to fill missing CO2 data (https://github.com/singularity-energy/open-grid-emissions/pull/280)
• Updates the handling of command-line arguments when running the pipeline (https://github.com/singularity-energy/open-grid-emissions/pull/288)
• Whenever net generation in a period is zero, the calculated generated emission rate was previously missing due to dividing by zero. In this release, we now fill apply a zero emission rate to these periods. For all other periods where emissions or generation data is actually missing, the generated emission rate will still be missing (https://github.com/singularity-energy/open-grid-emissions/pull/290)

Validation improvements:

• Raises a warning in allocated net generation or fuel consumption outputted from the EIA-923 generator allocation process is more than 0.1% different than the input data (https://github.com/singularity-energy/open-grid-emissions/pull/278)
• Adds logging to the data pipline, instead of using print statements. This also fixes a bug that was preventing logging messages from pudl from showing when running the pipeline. This allows us to save an output of all warnings to help validate the results. (https://github.com/singularity-energy/open-grid-emissions/pull/285)
• Expands the coverage of multiple existing validation checks to make them more comprehensive (https://github.com/singularity-energy/open-grid-emissions/pull/287)