Transformer Service Inc

USDOT 30728MC-477866USDOT activeAuthority active· DBA T S I· Concord, NH

Transformer Service Inc (USDOT 30728) holds active operating authority as a motor carrier of property under MC-477866 based in Concord, NH. The earliest grant on file is from March 2004, 22 years, 8 months ago. $4,000,000 of liability coverage is on file with National Union Fire Ins. Co. of Pitsbgh. PA. It reported 4 power units and 2 drivers on its last MCS-150 update (August 2024).

Operating authority

Docket	Authority	Status	Insurance required	On file
MC-477866	Motor carrier of property	Active	$1,000,000 liability	$5,000,000 liability

Earliest grant on file: Mar 2, 2004 (22 years, 8 months ago).

Insurance and bonds on file

Type	Insurer	Coverage	Effective	Cancellation
Liability (BIPD) · form 91X	Key Risk Insurance Company	$1,000,000	Jun 6, 2022	—
Liability (BIPD) · form 91X	National Union Fire Ins. Co. of Pitsbgh. PA	$4,000,000	Jan 3, 2006	—

Confirm coverage with the insurer before tendering a load.

Authority history

Date	Docket	Action
Mar 9, 2023	MC-477866	Reinstated · motor carrier of property
Oct 5, 2009	MC-477866	Revoked · motor carrier of property
Mar 2, 2004	MC-477866	Granted · motor carrier of property

Revocations

Docket	Authority	Order served	Effective
MC-477866	Common	Aug 31, 2009	Oct 5, 2009 · involuntary revocation

Registration

USDOT number	30728
USDOT status	Active
Dockets	MC-477866
Legal name	Transformer Service Inc
DBA name	T S I
Operation	Interstate
Classification	Private property, Authorized for hire
Business type	Corporation
Location	Concord, New Hampshire 03301
USDOT added	Jun 1, 1974
Last MCS-150 update	Aug 26, 2024
Safety rating	Satisfactory · Dec 19, 2011
Hazardous materials	Yes

Fleet

Power units	4
Trucks	4
Drivers	2 · 2 with a CDL
Annual miles	36,500 · 2023

Cargo carried

General freight, Liquids/gases, transformers oils

Check it yourself

Data as of Nov 12, 2026. Sources

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