Merrimack
BOW, NH · Merrimack · NAICS 221112
Data updated May 2026
Merrimack sits in the upper third of EPA GHGRP reporters by latest CO₂e (#1,831 of 8,713 nationally, #3 of 19 in NH).
- National rank #1,831 of 8,713 GHGRP facilities
- #3 of 19 in NH
- #846 of 1,732 in Power Plants
- 77.8% of GRANITE SHORE POWER parent CO₂e
- 2023 mix: 0.8% non-CO₂ (N₂O-led)
- -91.5% since 2011
Merrimack vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
171,786 1831st of 8713 higher than 6,882 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 77.8% of GRANITE SHORE POWER reported parent CO₂e (172K MT of 221K MT ; #1 of 3 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #846 of 1,732 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 172K MT CO₂e reported for 2023, non-CO₂ gases are 0.8% , led by N₂O at 0.5% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.2%
- 170K MT
- CH₄
- 0.3%
- 484 MT
- N₂O
- 0.5%
- 840 MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 171,786 |
| 2022 | 335,854 |
| 2021 | 299,851 |
| 2020 | 133,722 |
| 2019 | 332,095 |
| 2018 | 661,694 |
| 2017 | 257,922 |
| 2016 | 363,287 |
| 2015 | 798,921 |
| 2014 | 1,098,612 |
| 2013 | 1,376,671 |
| 2012 | 1,275,517 |
| 2011 | 2,026,028 |
Facility insight: Merrimack
Merrimack (GHGRP ID 1000729) is a high-volume reporter at 172K MT CO₂e in 2023 from BOW, NH (#1,831 of 8,713 nationally) under Power Plants (NAICS 221112).
Across 2011–2023, annual CO₂e fell 91.5%; peak load was 2.0M MT in 2011. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2011 at 2.0M MT CO2e; latest 2023 sits 91.5% below that peak (172K MT). The largest year-to-year move was 2011→2012 (-37.0%, 751K MT).
Frequently Asked Questions
Where does Merrimack rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Merrimack ranks #1,831 of 8,713 reporting facilities by latest reported CO₂e, and #3 of 19 facilities in NH (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Merrimack? ▼
Merrimack's 172K MT CO₂e is higher than 6,882 of the 8,713 GHGRP facilities with reported emissions (79%), an exact count from the full corpus, not an estimate.
How much CO2 does Merrimack emit? ▼
Merrimack reported 172K MT CO2e in 2023.
What share of GRANITE SHORE POWER does Merrimack represent? ▼
Merrimack accounts for 77.8% of GRANITE SHORE POWER's reported GHGRP CO₂e (172K MT of 221K MT), ranking #1 of 3 facilities under that parent.
What is Merrimack's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.8% of reported CO₂e at Merrimack, with N₂O the larger non-CO₂ share at 0.5% (CO₂ 99.2%). Shares use the facility's GHGRP gas components for that year.
Where does Merrimack rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, Merrimack ranks #846 of 1,732 by latest reported CO₂e.
Is Merrimack reducing emissions? ▼
Over 13 reporting years (2011–2023), Merrimack's emissions have decreased by 91.5%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Peer sets outside NH for a top-third GHGRP emitter: CO₂e totals first, then Power Plants neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside NH (172K MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside NH.