US DOE Y-12 National Security Complex
Oak Ridge, TN · ANDERSON COUNTY · NAICS 332999
Data updated May 2026
According to the EPA Greenhouse Gas Reporting Program, US DOE Y-12 National Security Complex ranks #4,712 of 8,713 U.S. reporting facilities by latest reported CO₂e and #83 of 144 facilities in TN.
- National rank #4,712 of 8,713 GHGRP facilities
- #83 of 144 in TN
- #735 of 1,599 in Other
- 0.1% of US GOVERNMENT parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- -40.0% since 2011
US DOE Y-12 National Security Complex vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
42,083 4712th of 8713 higher than 4,001 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 · 2023
Facility footprint context
This site accounts for 0.1% of US GOVERNMENT reported parent CO₂e (42K MT of 41.4M MT ; #44 of 83 GHGRP facilities under that parent ). Inside the EPA Other sector it ranks #735 of 1,599 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 42K MT CO₂e reported for 2023, non-CO₂ gases are 0.1% , led by N₂O at 0.1% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.9%
- 42K MT
- CH₄
- 0%
- 20 MT
- N₂O
- 0.1%
- 24 MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 42,083 |
| 2022 | 43,224 |
| 2021 | 43,813 |
| 2020 | 46,127 |
| 2019 | 45,971 |
| 2018 | 51,011 |
| 2017 | 50,293 |
| 2016 | 50,672 |
| 2015 | 51,707 |
| 2014 | 58,509 |
| 2013 | 61,650 |
| 2012 | 63,181 |
| 2011 | 70,190 |
Facility insight: US DOE Y-12 National Security Complex
US DOE Y-12 National Security Complex (EPA GHGRP Facility ID 1006655) reported 42K metric tons of CO2-equivalent in 2023, operating in Oak Ridge, TN within ANDERSON COUNTY. Among GHGRP reporters it ranks #4,712 of 8,713 nationally by latest CO₂e and #83 of 144 in TN. The site is classified under Other with NAICS code 332999.
Across 2011–2023, annual CO₂e fell 40.0%; peak load was 70K MT in 2011. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2011 at 70K MT CO2e; latest 2023 sits 40% below that peak (42K MT). The largest year-to-year move was 2011→2012 (-10.0%, 7K MT).
Frequently Asked Questions
Where does US DOE Y-12 National Security Complex rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, US DOE Y-12 National Security Complex ranks #4,712 of 8,713 reporting facilities by latest reported CO₂e, and #83 of 144 facilities in TN (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than US DOE Y-12 National Security Complex? ▼
US DOE Y-12 National Security Complex's 42K MT CO₂e is higher than 4,001 of the 8,713 GHGRP facilities with reported emissions (46%), an exact count from the full corpus, not an estimate.
How much CO2 does US DOE Y-12 National Security Complex emit? ▼
US DOE Y-12 National Security Complex reported 42K MT CO2e in 2023.
What share of US GOVERNMENT does US DOE Y-12 National Security Complex represent? ▼
US DOE Y-12 National Security Complex accounts for 0.1% of US GOVERNMENT's reported GHGRP CO₂e (42K MT of 41.4M MT), ranking #44 of 83 facilities under that parent.
What is US DOE Y-12 National Security Complex's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at US DOE Y-12 National Security Complex, with N₂O the larger non-CO₂ share at 0.1% (CO₂ 99.9%). Shares use the facility's GHGRP gas components for that year.
Where does US DOE Y-12 National Security Complex rank inside Other? ▼
Among EPA GHGRP facilities tagged Other, US DOE Y-12 National Security Complex ranks #735 of 1,599 by latest reported CO₂e.
Is US DOE Y-12 National Security Complex reducing emissions? ▼
Over 13 reporting years (2011–2023), US DOE Y-12 National Security Complex's emissions have decreased by 40%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Two GHGRP-derived peer sets for US DOE Y-12 National Security Complex, both outside TN so the neighborhoods are not state-geo containment.
Similar reported CO₂e
Nearest latest-year facility totals outside TN (42K MT here).
Similar Other CO₂e
Nearest same-sector facility totals outside TN.