SOUTHWEST ENERGY LLC

USDOT 198515 · Tucson, AZ

Not for-hireHazmat

Quick answers

What is SOUTHWEST ENERGY LLC's USDOT number?
SOUTHWEST ENERGY LLC is registered under USDOT 198515, based in Tucson, AZ. FMCSA classifies it as a private (not-for-hire) carrier that is registered to haul hazardous materials.
How large is SOUTHWEST ENERGY LLC's fleet?
SOUTHWEST ENERGY LLC reports 87 power units and 89 drivers in its FMCSA record in Tucson, AZ.

Answers reflect the public FMCSA record as of June 6, 2026; figures can change at any time.

Operating snapshot

87Power units (fleet size)
89Drivers reported
52Years since registration
11MAnnual miles reported (2025)
Tucson, AZHome base
52Inspections (24 mo)

Public FMCSA census & inspection records · as of 2026-06-06

18
Low
HaulReport estimate · highest estimated percentile
Hours-of-Service Compliance is this carrier's highest reconstructed BASIC percentile at the 17.9th percentile among 20,717 safety-event peers. Across 2 rated categories, 2 are estimated Low. Higher percentile = more inspection-violation activity recorded relative to peers. An independent estimate, not an official FMCSA or CSA score.
Estimated from public FMCSA data · updated 2026-06-08 · How we calculate this

SOUTHWEST ENERGY LLC is a private property motor carrier based in Tucson, AZ, operating 87 power units and 89 drivers, and has been registered with FMCSA for about 52 years (since 1974). It is flagged as a hazardous-materials carrier in the FMCSA census. In this public FMCSA inspection snapshot it has 52 recorded inspections, with a vehicle out-of-service rate of 8.0% (below the 21.2% snapshot benchmark) and a driver out-of-service rate of 1.9% (below the 5.2% benchmark). HaulReport's highest reconstructed BASIC percentile for this carrier is Hours-of-Service Compliance at the 17.9th percentile (estimated band: Low), ranked among 20,717 safety-event peers — an independent estimate, not an official FMCSA or CSA score.

HaulReport interpretation — auto-generated from the public FMCSA data below and our percentile estimates.

Estimated BASIC percentiles

Hours-of-Service ComplianceLow
17.9 pctl · CI 1323
BASIC measure: 0.12Insp. w/ violation: 52Peer group: 20,717
Vehicle MaintenanceLow
3.5 pctl · CI 09
BASIC measure: 0.40Insp. w/ violation: 50Peer group: 19,381

Out-of-service rates

Vehicle OOS8.0%below the 21.2% snapshot benchmark · 50 inspections
Driver OOS1.9%below the 5.2% snapshot benchmark · 52 inspections

Out-of-service rate = inspections resulting in an out-of-service order ÷ inspections. The benchmark is the inspection-weighted rate across this FMCSA snapshot — not an official national average. Rates are shown only with at least 5 inspections.

MCS-150 biennial update

Due May 2027
Next biennial update dueMay 2027
Recurring update monthMay, odd-numbered years
Last MCS-150 update on fileApril 15, 2026

FMCSA sets each carrier's biennial update month from the last two digits of the USDOT number (last digit → month, second-to-last digit → odd/even year) — it is required even when nothing has changed. This is a schedule derived from the public rule, not a compliance determination. Verify and file on FMCSA · Deadline calculator

Carrier facts (public FMCSA data)
Verbatim public facts from FMCSA datasets. Only the percentile/band/confidence figures above are HaulReport reconstructions — not official FMCSA or CSA scores.
USDOT number198515
Legal nameSOUTHWEST ENERGY LLC
LocationTUCSON, AZ
Operating classificationNot for-hire (per FMCSA census)
Hazmat carrierYes (per FMCSA census)
Power units (fleet size)87
Drivers89
Reported annual mileage11,456,180 (reported for 2025)
FMCSA registered1974 (~52 years)
Last MCS-150 updateApril 15, 2026
Next MCS-150 update dueMay 2027
Inspections (trailing 24 mo)52
Published BASIC measures2

State reference data: Truck-crash statistics for Arizona — state-wide totals for all carriers registered in Arizona, not specific to this carrier.

FMCSA data as of 2026-06-06 · Last synced 2026-06-08 · Method: how these percentiles are reconstructed · Canonical: https://haulreport.com/carrier/198515/