Installation of photovoltaic panels · California

Ambrose Solar

Vacaville, CA · ~107 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
6.9
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Ambrose Solar runs at 246% of its industry's injury rate - far more dangerous than the typical Installation of photovoltaic panels workplace, earning a grade F.

Ambrose Solar: 6.9 TCR = 246% of Installation of photovoltaic panels BLS 2.8 · 3y Form 300A (see methodology below)

Ambrose Solar safety composite

Ambrose Solar scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 12%), 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).

F

28/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6.9 per 100 workers

Safer than 12% of industry peers

DART rate
F 2.22 per 100 workers

Safer than 30% of industry peers

Fatalities
D 0

Safer than 51% 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%).

TCR Δ

−7.4

2022→2024

Ambrose Solar injury rate improved

Ambrose Solar's TCR fell 7.4 from 9.6 in 2022 to 2.2 in 2024. Peak filing year was 2022 at 9.6 TCR. In 2024, DART was 0.32× this establishment's average TCR (severity share of cases).

2022=9.6 · 2023=8.8 · 2024=2.2

OSHA ITA Form 300A scorecard

Establishment book 238210 · Vacaville, CA ABOVE-IND · MID

Grade F · TCR 6.9 · 246% of ind

  • DART 2.2 DART
  • RANK #451/548
  • PHOTO Allegro Power, LLC
  • BOOK 3y book
  • INJ 22 inj
  • SIZE ~107 FTE

Nearest TCR peer: Allegro Power, LLC (0.0 TCR gap)

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

Ambrose Solar in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Ambrose Solar averages 6.9 TCR (246% of the Installation of photovoltaic panels BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Ambrose Solar TCR series: 2022=9.6 · 2023=8.8 · 2024=2.2 · BLS 2.8

Where Ambrose Solar falls in its industry

4,550 Installation of photovoltaic p establishments

Safer than 12% of graded establishments in this industry, whose median TCR is 2.5.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #451 safest of 548 Installation of photovoltaic p employers in California.

Ambrose Solar (107 employees, TCR 6.9) among 29 same-industry peers, split at the industry median of 63 employees and a TCR of 2.5 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 05001,0001,500 051015 Average employees Total Case Rate Ambrose Solar
Ambrose Solar (107 employees, TCR 6.9) among 29 same-industry peers, split at the industry median of 63 employees and a TCR of 2.5

Ambrose Solar has more employees than the Installation of photovoltaic panels median and a higher injury rate than the industry's median TCR of 2.5. 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 Illnesses Fatalities
2024 2.2 2.2 2 0 0
2023 8.8 8.8 10 0 0
2022 9.6 3.9 10 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238210 · CA · Vacaville

4,550 Installation of photovoltaic panels employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 130 employers in Vacaville, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Allegro Power, LLC 6.9 TCR
NAICS-TCR R.K. Bass Electric, Inc. 6.9 TCR
NAICS-TCR SunPower Corp. - SPNJ2 Cranbury 6.9 TCR
NAICS-TCR Custom Electrical Contractors 6.9 TCR
STATE-SIZE Munger Bros, LLC 107 FTE
STATE-SIZE Growers Transplanting 107 FTE
STATE-SIZE Fondomonte California LLC - Blythe Ranch 107 FTE
STATE-SIZE West Coast Tomato Growers, Inc. 107 FTE
CITY-NEAR California Department of Corrections and Rehabilitation 1,830 FTE
CITY-NEAR Amazon Transportation Services : SMF5 1,686 FTE
CITY-NEAR 2032-02121451 1,665 FTE
CITY-NEAR CDCR California State Prison Solano 1,339 FTE
NAT-TCR Aubin Woodworking, Inc 6.9 TCR
NAT-TCR OKO009 6.9 TCR
NAT-TCR Wilkins, Kaiser & Olsen, Inc. 6.9 TCR
NAT-TCR RVI-Hanceville 6.9 TCR
NAT-SIZE Harco LLC 107 FTE
NAT-SIZE 75 - Portland 107 FTE
NAT-SIZE JANA, Inc. 107 FTE
NAT-SIZE Vineyard Wind 1, LLC 107 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: 2024, 2023, 2022. 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.