Constellation Energy Generation LLC
3 facilities · 3 states · 54.0K lbs total releases
According to the EPA Toxics Release Inventory, Constellation Energy Generation LLC is the reported parent of 3 Form R facilities across 3 states, disclosing 54.0K lbs of toxic releases. 5 of 12 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Massachusetts (46.4K lbs). Those TRI figures remain self-reported disclosure pounds for Constellation Energy Generation LLC, including carcinogen-flagged substances, not a measured public-health risk score.
TRI parent disclosure trail
Read Constellation Energy Generation LLC from filing to facility
Largest Form R sites under this parent: Mystic Station; Perryman Generating Station; Eddystone Generating Station. Neighbor parents on the disclosure ladder: Eastman Chemical Co; Callaway Golf Co. Largest disclosed chemicals by pounds: Ammonia; Polycyclic aromatic compounds; Benzo[g,h,i]perylene; 1,2,4-Trimethylbenzene; Benzene. Heaviest-reporting states in this extract: Massachusetts; Maryland; Pennsylvania. Industry labels on the parent rollup: Electric Utilities. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Largest Form R sites under this parent: Mystic Station; Perryman Generating Station; Eddystone Generating Station. Neighbor parents on the disclosure ladder: Eastman Chemical Co; Callaway Golf Co. Largest disclosed chemicals by pounds: Ammonia; Polycyclic aromatic compounds; Benzo[g,h,i]perylene; 1,2,4-Trimethylbenzene; Benzene. Heaviest-reporting states in this extract: Massachusetts; Maryland; Pennsylvania. Industry labels on the parent rollup: Electric Utilities.
Constellation Energy Generation LLC ranks #1,951 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. Constellation Energy Generation LLC files across 3 states, a regional parent portfolio rather than a single-state discloser. Releases are facility-concentrated: Mystic Station accounts for most of Constellation Energy Generation LLC's disclosed pounds, so peer comparisons should weight that site, not an even portfolio average.
Parent aggregation for Constellation Energy Generation LLC follows facility-reported names. Compare the named neighbors (Eastman Chemical Co; Callaway Golf Co) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Constellation Energy Generation LLC sits among TRI parents
Constellation Energy Generation LLC sits on a disclosure ladder beside Eastman Chemical Co and Callaway Golf Co. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Eastman Chemical Co · rank #1,949 · 2.5M lbs
- Callaway Golf Co · rank #1,950 · 1.5M lbs
Largest chemicals disclosed by Constellation Energy Generation LLC
Ammonia; Polycyclic aromatic compounds; Benzo[g,h,i]perylene; 1,2,4-Trimethylbenzene; Benzene lead the Form R pound rollup for this parent, including filings such as Mystic Station. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Ammonia | 54.0K lbs |
| Polycyclic aromatic compounds | 38 lbs |
| Benzo[g,h,i]perylene | 1 lbs |
| 1,2,4-Trimethylbenzene | 0 lbs |
| Benzene | 0 lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Massachusetts | 1 | 46.4K lbs |
| Maryland | 1 | 7.6K lbs |
| Pennsylvania | 1 | 0 lbs |
Facilities (3)
| Facility | Releases |
|---|---|
| Mystic Station Charlestown, MA | 46.4K lbs |
| Perryman Generating Station Perryman, MD | 7.6K lbs |
| Eddystone Generating Station Eddystone, PA | 0 lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest Constellation Energy Generation LLC on total disclosed release pounds (54.0K lbs) and reporting facility count (3). Release-volume peers include Orchid Mps Holdings LLC, Granite Construction Inc, Dover Corp. Facility-count peers include A-Gas US Holdings Inc, Abb Holdings Inc, Adams Resources & Energy Inc. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Massachusetts, Maryland, Pennsylvania; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Constellation Energy Generation LLC's TRI parent record
From Constellation Energy Generation LLC, open Mystic Station or compare against Eastman Chemical Co rather than reading rank alone.
- Open the largest Form R site for Constellation Energy Generation LLC (Mystic Station in MA). Largest facility
- Compare against Callaway Golf Co, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Constellation Energy Generation LLC sits among all slug-merged TRI parents. All parent companies
Rank and peers (Eastman Chemical Co, Callaway Golf Co) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Constellation Energy Generation LLC's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.