Add Mercury Emissions

[grgmiller]

eGRID reports mercury (Hg) emissions, although the technical guide notes that:

However, while electric generating units started to report mercury data to CAMD’s Power Sector Emissions Data in 2015, the data are incomplete. We have included the unit-level emissions, but since only a subset of the units at one plant may list mercury emissions, we have not summed these emissions to the plant-level. Therefore, we have retained these fields in anticipation of being able to report plant-level mercury emissions and emission rates in a future edition of eGRID

Currently eGRID only reports those mercury emissions that are reported in CAMD, and does not attempt to calculate mercury emissions based on reported EIA-923 data.

To do:

• Investigate whether there are emissions factors for mercury emissions
• Research what factors affect mercury emissions from power generation
• Incorporate reported Hg data from CAMD
• Impute missing Hg emissions from EIA-923 data using emissions factors if available