Motor generator sets (except automotive, turbine generator sets) manufacturing · California

Mainspring Energy Headquarters

Name: Mainspring Energy Headquarters Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Menlo Park, CA · ~249 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 0.9
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Mainspring Energy Headquarters runs at 28% of its industry's injury rate - far safer than the typical Motor generator sets (except automotive, turbine generator sets) manufacturing workplace, earning a grade A.

Mainspring Energy Headquarters: 0.9 TCR = 28% of Motor generator sets (except automotive, turbine generator sets) manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Mainspring Energy Headquarters safety composite

Mainspring Energy Headquarters scores strongest on total case rate (tcr) (safer than 84% of same-industry peers) and weakest on dart rate (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

64/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 0.91 per 100 workers

Safer than 84% of industry peers
DART rate: D 0.72 per 100 workers

Safer than 50% of industry peers
Fatalities: D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Rising injury rate

Mainspring Energy Headquarters: 0.0 → 0.7 TCR

Peak year 2021 @ 2.0 TCR · DART/TCR 0.79× in 2023

Mainspring Energy Headquarters's TCR rose 0.7 from 0.0 in 2020 to 0.7 in 2023. Peak filing year was 2021 at 2.0 TCR. In 2023, DART was 0.79× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 335312 · Menlo Park, CA AT/BELOW-IND · MID

Grade A · TCR 0.9 · 28% of ind

DART 0.7 DART
RANK #1/9
PHOTO ABB Motors and Mecha…
BOOK 3y book
INJ 8 inj
SIZE ~249 FTE

Nearest TCR peer: ABB Motors and Mechanical Inc. (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

This site

0.9
ABB Motors and

0.9
Allied Motion

0.9
Moog - Christi

0.9
SRC

0.9

What this shows Mainspring Energy Headquarters averages 0.9 TCR (28% of the Motor generator sets (except automotive, turbine generator sets) manufacturing BLS benchmark).

Mainspring Energy Headquarters TCR series: 2020=0 · 2021=2 · 2023=0.7 · BLS 3.3

Where Mainspring Energy Headquarters falls in its industry

222 Motor generator sets (except a establishments

Safer than 84% of graded establishments in this industry, whose median TCR is 2.3.

Grade A

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #1 safest of 9 Motor generator sets (except a employers in California.

Mainspring Energy Headquarters (249 employees, TCR 0.9) among 29 same-industry peers, split at the industry median of 120 employees and a TCR of 2.3

Mainspring Energy Headquarters has more employees than the Motor generator sets (except automotive, median and a lower injury rate than the industry's median TCR of 2.3. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries
2023	0.7	0.7	3
2021	2.0	1.2	5
2020	0.0	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

335312 · CA · Menlo Park

222 Motor generator sets (except automotive, turbine generator sets) manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 62 employers in Menlo Park, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	ABB Motors and Mechanical Inc.	ATHENS, GA	0.9 TCR
NAICS-TCR	Allied Motion Emoteq	TULSA, OK	0.9 TCR
NAICS-TCR	Moog - Christiansburg	CHRISTIANSBURG, VA	0.9 TCR
NAICS-TCR	SRC	SPRINGFIELD, MO	0.9 TCR
STATE-SIZE	Orange County Water District	FOUNTAIN VALLEY	249 FTE
STATE-SIZE	California Field	SAN DIEGO	249 FTE
STATE-SIZE	MHA RDR LLC	LODI	249 FTE
STATE-SIZE	Baker Electric Home Energy	ESCONDIDO	249 FTE
CITY-NEAR	SH Menlo Park	Menlo Park	628 FTE
CITY-NEAR	Rudolph and Sletten	Menlo Park	516 FTE
CITY-NEAR	Rosewood Sand Hill	Menlo Park	430 FTE
CITY-NEAR	Care Indeed Inc	Menlo Park	381 FTE
NAT-TCR	Venture Construction Company - Kansas City	Overland Park, KS	0.9 TCR
NAT-TCR	Solid Rock Inc	Rocky Mount, VA	0.9 TCR
NAT-TCR	Owens Corning	Houston, TX	0.9 TCR
NAT-TCR	Florida School Book Depository	Jacksonville, FL	0.9 TCR
NAT-SIZE	Autoform Tool & Manufacturing, LLC	Angola, IN	249 FTE
NAT-SIZE	Chandler Hall Health Services	Newtown, PA	249 FTE
NAT-SIZE	Hanon Systems USA, LLC	Carey, OH	249 FTE
NAT-SIZE	CrownQuest Operating, LLC	Midland, TX	249 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2023, 2021, 2020. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.