Arconic US LLC
MASSENA, NY · ST. LAWRENCE COUNTY · NAICS 331318
Last reported 2021. This facility's newest EPA GHGRP report is for 2021, not 2023, so its figures and its rank compare older data with 2023 peers. The ranking tables mark facilities like this one with a "Last reported" label.
Data updated May 2026
Arconic US LLC ranks among smaller GHGRP totals (#7,793 of 8,713 nationally; #220 of 246 in NY), a lower-footprint comparator in Metals.
- National rank #7,793 of 8,713 GHGRP facilities
- #220 of 246 in NY
- #332 of 363 in Metals
- -97.6% since 2011
Arconic US LLC vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
7,987 7793rd of 8713 higher than 920 of 8,713 facilities
GHGRP facilities, banded by latest reported CO₂e (MT)
Each bar is a band; taller bars hold more facilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · 2021
Facility footprint context
Inside the EPA Metals sector it ranks #332 of 363 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2021 | 7,987 |
| 2020 | 14,112 |
| 2019 | 17,478 |
| 2018 | 19,647 |
| 2017 | 18,924 |
| 2016 | 255,641 |
| 2015 | 321,629 |
| 2014 | 313,062 |
| 2013 | 288,607 |
| 2012 | 310,472 |
| 2011 | 330,211 |
Facility insight: Arconic US LLC
Arconic US LLC (ID 1002483) reported 8K MT CO₂e for 2021 in ST. LAWRENCE COUNTY, NY (#7,793 of 8,713 by latest CO₂e).
Across 2011–2021, annual CO₂e fell 97.6%; peak load was 330K MT in 2011. This facility has filed every year from 2011 to 2021, a complete 11-year record.
Peak year was 2011 at 330K MT CO2e; latest 2021 sits 97.6% below that peak (8K MT). The largest year-to-year move was 2016→2017 (-92.6%, 237K MT).
Frequently Asked Questions
Where does Arconic US LLC rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Arconic US LLC ranks #7,793 of 8,713 reporting facilities by latest reported CO₂e, and #220 of 246 facilities in NY (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Arconic US LLC? ▼
Arconic US LLC's 8K MT CO₂e is higher than 920 of the 8,713 GHGRP facilities with reported emissions (11%), an exact count from the full corpus, not an estimate.
How much CO2 does Arconic US LLC emit? ▼
Arconic US LLC reported 8K MT CO2e in 2021.
Where does Arconic US LLC rank inside Metals? ▼
Among EPA GHGRP facilities tagged Metals, Arconic US LLC ranks #332 of 363 by latest reported CO₂e.
Is Arconic US LLC reducing emissions? ▼
Over 11 reporting years (2011–2021), Arconic US LLC's emissions have decreased by 97.6%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Lower-footprint peers outside NY: nearest CO₂e totals and same-sector reporters for context.
Similar reported CO₂e
Nearest latest-year facility totals outside NY (8K MT here).
Similar Metals CO₂e
Nearest same-sector facility totals outside NY.