The annual point emissions in csv format (sectoral and merged) based on NEI2017:
Annual total emission of VOCs, NOx, PM2.5, SO2, CO, and NH3. The unit is ton/yr

ptegu: Electric generating unit emissions.
ptnonipm: Point source emissions from industrial activities.
pt_oilgas: Point source oil and gas emissions, including emissions from offshore oil rigs in the Gulf of Mexico.
cmv_c1c2_12: Emissions from C1 and C2 commercial marine sources, including ports and navigable waterways. Includes C1/C2 marine emissions in the entire domain, including US, Canada, Mexico, and all bodies of water which lie outside the boundaries of those countries.
cmv_c3_12: CMV_C3: Emissions from C3 commercial marine sources, including ports and navigable waterways. Includes C3 marine emissions in the entire domain, including US, Canada, Mexico, and all bodies of water which lie outside the boundaries of those countries.
othpt: Point source emissions from Canada and Mexico.