EPA Air · stack tests by state, industry and year
Utilities (NAICS 2211): stack tests in Massachusetts, 2026
- 13Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2026 at a Massachusetts source whose primary industry code is NAICS 2211. A facility filing more than one industry code is counted under the first one on its record.
Utilities (NAICS 2211) in Massachusetts, other years
Other industries in Massachusetts, 2026
- Waste management and remediation (NAICS 5622) 6
- Machinery manufacturing (NAICS 3332) 5
- Educational services (NAICS 6113) 4
- Utilities (NAICS 2213) 3
- Hospitals (NAICS 6221) 3
- Pipeline transportation (NAICS 4862) 3
- Mining and quarrying (NAICS 2123) 3
Air-emissions stack tests recorded in Massachusetts, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-07-23 | MASSPOWER | SPRINGFIELD, CITY OF, Hampden, MA | Pending | State |
| 2026-07-14 | BERKSHIRE POWER LLC | AGAWAM, Hampden, MA | Pending | State |
| 2026-06-09 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pending | State |
| 2026-06-09 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pending | State |
| 2026-05-22 | NE RENEWABLE POWER FITCHBURG LLC | WESTMINSTER, Worcester, MA | Pending | State |
| 2026-05-22 | NE RENEWABLE POWER FITCHBURG LLC | WESTMINSTER, Worcester, MA | Pending | State |
| 2026-05-07 | IPSWICH MUNICIPAL LIGHT | IPSWICH, Essex, MA | Pending | State |
| 2026-04-07 | STONY BROOK ENERGY CENTER — high-priority violation on file | LUDLOW, TOWN OF, Hampden, MA | Pending | State |
| 2026-04-07 | MEDICAL AREA TOTAL ENERGY | BOSTON, CITY OF, Suffolk, MA | Pending | State |
| 2026-03-10 | SBC ENERGY LLC FKA SOUTHBRIDGE POWER & THERMAL LLC | SOUTHBRIDGE, Worcester, MA | Pending | State |
| 2026-03-03 | STONY BROOK ENERGY CENTER — high-priority violation on file | LUDLOW, TOWN OF, Hampden, MA | Pending | State |
| 2026-03-03 | STONY BROOK ENERGY CENTER — high-priority violation on file | LUDLOW, TOWN OF, Hampden, MA | Pending | State |
| 2026-02-10 | MARBLEHEAD MUNICIPAL-WILKENS | MARBLEHEAD, TOWN OF, Essex, MA | Pending | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.