B S T Systems, INC.
78 Plainfield Pike, Plainfield, CT 06374
Operating signal within 12 months from two or more independent sources.
What they make
Battery Manufacturing335910- cells
- batteries
- support electronics
- power systems
- prototypes
- production
- deep sea
- s Quality Assurance Program
- ISO 9001
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Products
Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.
Where these came from
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| C & M CORP | Wauregan | Other Communication and Energy Wire Manufacturing 335929 | UNVERIFIED | 7.0 KM |
| Albany Fiber Optics LLC | Danielson | Fiber Optic Cable Manufacturing 335921 | ACTIVE | 13.3 KM |
| Winchester Interconnect Cm Corporation | Dayville | Other Communication and Energy Wire Manufacturing 335929 | ACTIVE | 20.5 KM |
| Plastic Diversity Solutions | Dayville | Custom Compounding of Purchased Resins 325991 | LIKELY ACTIVE | 20.5 KM |
| PPC Putnam | Putnam | Fiber Optic Cable Manufacturing 335921 | LIKELY ACTIVE | 24.3 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
7 sources hold this plant, and 13 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
EPA cross-references this facility in BR, NPDES, OSHA-OIS, RCRAINFO, SIMS, TRIS, TSCA · EPA site type STATIONARY.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord EXUCJZLY91A4 · first seen DEC 2025 · last seen DEC 2025
- Connecticut Secretary of the State business registryOPERATINGRecord CT:001t000000WmYHgAAN · first seen DEC 2025 · last seen DEC 2025
- EPA Toxics Release InventoryOPERATINGfirst seen DEC 2024 · last seen DEC 2024
- DOL Form 5500 retirement plan filingsOPERATINGRecord 061073185|CT|06374|78 plainfield pike rd · first seen DEC 2024 · last seen DEC 2024
- SBA Paycheck Protection Program loan recordsEXISTENCERecord CT|plainfield|78 plainfield pike · first seen JAN 2021 · last seen JAN 2021
- EPA Facility Registry ServiceEXISTENCERecord 110011369731 · first seen APR 2016 · last seen APR 2016
IN NORTHEASTERN CONNECTICUT COUNTY8 other plants share this one’s industry (Other Electrical Equipment and Component Manufacturing, NAICS 3359); 2 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- EPA: B S T SYSTEMS INC · JUL 2026 · ON THIS PAGE
- SAM.gov: B S T SYSTEMS, INC. · DEC 2025 · ON THIS PAGE
- Street addressSOURCES DISAGREE
- EPA: 78 PLAINFIELD PIKE ROAD · JUL 2026
- SAM.gov: 78 PLAINFIELD PIKE · DEC 2025 · ON THIS PAGE
- City
- EPA: PLAINFIELD · JUL 2026 · ON THIS PAGE
- SAM.gov: PLAINFIELD · DEC 2025 · ON THIS PAGE
- State
- EPA: CT · JUL 2026 · ON THIS PAGE
- SAM.gov: CT · DEC 2025 · ON THIS PAGE
- Coordinates
- EPA: 41.682,-71.89989 · JUL 2026
- Employees (band)
- DOL: 20-99 · DEC 2024
- Website
- SAM.gov: http://www.bstsys.com · DEC 2025
- Year established
- CT SOTS: 1983 · JAN 1983
- CAGE code
- SAM.gov: 62399 · DEC 2025
- Retirement plan filing (Form 5500)
- DOL: 41 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
- PPP loan
- SBA PPP: PPP loan x2, approved 2021-01-22, 44 jobs reported · JAN 2021
- SAM registration expires
- SAM.gov: 2026-12-08 · DEC 2025
- State business registration
- CT SOTS: B S T SYSTEMS, INC., registered with the Connecticut Secretary of the State; Corporation; formed 1983-01-07; active, annual report filed 2025-12-09 · DEC 2025