Carrier profile · USDOT 157345 · Updated Jun 21, 2026
National Grid Service Co Inc
DBA NATIONAL GRID
235 power unitsavg 7.3 yrRegional · 4 statesWALTHAM, MA87/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Equipment
Haulable capacity (power units only — trailers are towed context), equipment mix, and the VIN-decoded unit roster. Click any VIN to trace that unit across every carrier that has run it.
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 235
- Observed power (24 mo)
- 11
- Trailers (towed)
- 2
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2025
Newest model yr
2014
Oldest model yr
7.1%
VINs decoded
Unit roster· VIN-decoded from inspections · NHTSA vPIC
Showing 14 · most-inspected first.