PORTSMOUTH NAVAL SHIPYARD
KITTERY, ME · YORK COUNTY · NAICS 928110
Data updated May 2026
According to the EPA Greenhouse Gas Reporting Program, PORTSMOUTH NAVAL SHIPYARD ranks #3,304 of 8,713 U.S. reporting facilities by latest reported CO₂e and #9 of 35 facilities in ME.
- National rank #3,304 of 8,713 GHGRP facilities
- #9 of 35 in ME
- #414 of 1,599 in Other
- 0.2% of US GOVERNMENT parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +38.8% since 2011
PORTSMOUTH NAVAL SHIPYARD vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
72,231 3304th of 8713 higher than 5,409 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 0.2% of US GOVERNMENT reported parent CO₂e (72K MT of 41.4M MT ; #29 of 83 GHGRP facilities under that parent ). Inside the EPA Other sector it ranks #414 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 72K 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%
- 72K MT
- CH₄
- 0%
- 34 MT
- N₂O
- 0.1%
- 41 MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 72,231 |
| 2022 | 58,681 |
| 2021 | 51,422 |
| 2020 | 52,144 |
| 2019 | 51,136 |
| 2018 | 53,982 |
| 2017 | 50,343 |
| 2016 | 46,813 |
| 2015 | 47,921 |
| 2014 | 51,172 |
| 2013 | 49,307 |
| 2012 | 50,776 |
| 2011 | 52,038 |
Facility insight: PORTSMOUTH NAVAL SHIPYARD
PORTSMOUTH NAVAL SHIPYARD (EPA GHGRP Facility ID 1004698) reported 72K metric tons of CO2-equivalent in 2023, operating in KITTERY, ME within YORK COUNTY. Among GHGRP reporters it ranks #3,304 of 8,713 nationally by latest CO₂e and #9 of 35 in ME. The site is classified under Other with NAICS code 928110.
From 2011 to 2023, reported CO₂e rose 38.8% (peak 72K MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Frequently Asked Questions
Where does PORTSMOUTH NAVAL SHIPYARD rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, PORTSMOUTH NAVAL SHIPYARD ranks #3,304 of 8,713 reporting facilities by latest reported CO₂e, and #9 of 35 facilities in ME (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than PORTSMOUTH NAVAL SHIPYARD? ▼
PORTSMOUTH NAVAL SHIPYARD's 72K MT CO₂e is higher than 5,409 of the 8,713 GHGRP facilities with reported emissions (62%), an exact count from the full corpus, not an estimate.
How much CO2 does PORTSMOUTH NAVAL SHIPYARD emit? ▼
PORTSMOUTH NAVAL SHIPYARD reported 72K MT CO2e in 2023.
What share of US GOVERNMENT does PORTSMOUTH NAVAL SHIPYARD represent? ▼
PORTSMOUTH NAVAL SHIPYARD accounts for 0.2% of US GOVERNMENT's reported GHGRP CO₂e (72K MT of 41.4M MT), ranking #29 of 83 facilities under that parent.
What is PORTSMOUTH NAVAL SHIPYARD's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at PORTSMOUTH NAVAL SHIPYARD, 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 PORTSMOUTH NAVAL SHIPYARD rank inside Other? ▼
Among EPA GHGRP facilities tagged Other, PORTSMOUTH NAVAL SHIPYARD ranks #414 of 1,599 by latest reported CO₂e.
Is PORTSMOUTH NAVAL SHIPYARD reducing emissions? ▼
Over 13 reporting years (2011–2023), PORTSMOUTH NAVAL SHIPYARD's emissions have increased by 38.8%. This may reflect expanded operations or increased production.
Nationwide facilities with similar CO₂e or sector
Two GHGRP-derived peer sets for PORTSMOUTH NAVAL SHIPYARD, both outside ME so the neighborhoods are not state-geo containment.
Similar reported CO₂e
Nearest latest-year facility totals outside ME (72K MT here).
Similar Other CO₂e
Nearest same-sector facility totals outside ME.