Mainspring Energy Headquarters
3601 Haven Avenue, Menlo Park, CA 94025
ACTIVELAST SEEN IN FEDERAL DATA APR 2026 · 3 SOURCES
Operating signal within 12 months from two or more independent sources.
What they make
Motor and Generator Manufacturing335312Where it is
37.48600, -122.18525 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Lcl International, INC | Menlo Park | Power, Distribution, and Specialty Transformer Manufacturing 335311 | UNVERIFIED | 0.1 KM |
| Mainspring Energy INC | Menlo Park | Motor and Generator Manufacturing 335312 | UNVERIFIED | 1.1 KM |
| Vi at Palo Alto | Palo Alto | Motor and Generator Manufacturing 335312 | UNVERIFIED | 5.2 KM |
| Dsw | San Carlos | Power, Distribution, and Specialty Transformer Manufacturing 335311 | LIKELY ACTIVE | 7.2 KM |
| Delta Star INC | San Carlos | Power, Distribution, and Specialty Transformer Manufacturing 335311 | UNVERIFIED | 8.0 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| SAM GOV | OPERATING | APR 2026 | APR 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| EPA FRS | EXISTENCE | SEP 2025 | SEP 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | APR 2026 |
| CAGE CODE | SAM GOV | APR 2026 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | APR 2026 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | APR 2026 |
| REGISTRATION EXPIRATION | SAM GOV | APR 2026 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | APR 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
