TRANSCO STATION 190
ELLICOTT CITY, MD · HOWARD COUNTY · NAICS 486210
Data updated May 2026
TRANSCO STATION 190 sits in the upper third of EPA GHGRP reporters by latest CO₂e (#2,677 of 8,713 nationally, #25 of 77 in MD).
- National rank #2,677 of 8,713 GHGRP facilities
- #25 of 77 in MD
- #307 of 2,099 in Petroleum and Natural Gas Systems
- 1.6% of THE WILLIAMS COS parent CO₂e
- 2023 mix: 2.6% non-CO₂ (CH₄-led)
- -32.3% since 2011
TRANSCO STATION 190 vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
97,685 2677th of 8713 higher than 6,036 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 1.6% of THE WILLIAMS COS reported parent CO₂e (98K MT of 6.2M MT ; #22 of 65 GHGRP facilities under that parent ). Inside the EPA Petroleum and Natural Gas Systems sector it ranks #307 of 2,099 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 98K MT CO₂e reported for 2023, non-CO₂ gases are 2.6% , led by CH₄ at 2.6% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 97.4%
- 95K MT
- CH₄
- 2.6%
- 2K MT
- N₂O
- 0.1%
- 53 MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 97,685 |
| 2022 | 99,917 |
| 2021 | 108,629 |
| 2020 | 103,462 |
| 2019 | 75,906 |
| 2016 | 8,827 |
| 2015 | 3,059 |
| 2014 | 2,811 |
| 2013 | 28,798 |
| 2012 | 81,436 |
| 2011 | 144,254 |
Facility insight: TRANSCO STATION 190
TRANSCO STATION 190 (GHGRP ID 1006953) is a high-volume reporter at 98K MT CO₂e in 2023 from ELLICOTT CITY, MD (#2,677 of 8,713 nationally) under Petroleum and Natural Gas Systems (NAICS 486210).
Across 2011–2023, annual CO₂e fell 32.3%; peak load was 144K MT in 2011. GHGRP filings are on record for 11 of those 13 years, 2 years missing from the reporting history.
Peak year was 2011 at 144K MT CO2e; latest 2023 sits 32.3% below that peak (98K MT). The largest year-to-year move was 2016→2019 (+759.9%, 67K MT).
Frequently Asked Questions
Where does TRANSCO STATION 190 rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, TRANSCO STATION 190 ranks #2,677 of 8,713 reporting facilities by latest reported CO₂e, and #25 of 77 facilities in MD (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than TRANSCO STATION 190? ▼
TRANSCO STATION 190's 98K MT CO₂e is higher than 6,036 of the 8,713 GHGRP facilities with reported emissions (69%), an exact count from the full corpus, not an estimate.
How much CO2 does TRANSCO STATION 190 emit? ▼
TRANSCO STATION 190 reported 98K MT CO2e in 2023.
What share of THE WILLIAMS COS does TRANSCO STATION 190 represent? ▼
TRANSCO STATION 190 accounts for 1.6% of THE WILLIAMS COS's reported GHGRP CO₂e (98K MT of 6.2M MT), ranking #22 of 65 facilities under that parent.
What is TRANSCO STATION 190's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 2.6% of reported CO₂e at TRANSCO STATION 190, with CH₄ the larger non-CO₂ share at 2.6% (CO₂ 97.4%). Shares use the facility's GHGRP gas components for that year.
Where does TRANSCO STATION 190 rank inside Petroleum and Natural Gas Systems? ▼
Among EPA GHGRP facilities tagged Petroleum and Natural Gas Systems, TRANSCO STATION 190 ranks #307 of 2,099 by latest reported CO₂e.
Is TRANSCO STATION 190 reducing emissions? ▼
Over 11 reporting years (2011–2023), TRANSCO STATION 190's emissions have decreased by 32.3%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Peer sets outside MD for a top-third GHGRP emitter: CO₂e totals first, then Petroleum and Natural Gas Systems neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside MD (98K MT here).
Similar Petroleum and Natural Gas Systems CO₂e
Nearest same-sector facility totals outside MD.