What we buy
Ranges we buy on this page
This guide explains the Department of Energy efficiency rules for distribution transformers and how they affect older units in North Carolina. It is for plant engineers, utility asset managers, facility directors, and contractors evaluating equipment for removal or continued service.
The key distinctions are equipment scope, manufacture date, and documented losses. A nameplate photograph and factory test report tell more than a general claim that a transformer meets DOE requirements.
| Phase | kVA | Voltage | Fluid |
|---|---|---|---|
| 1-phase | 10 - 333 kVA | up to 25 kV | Liquid or dry |
| 3-phase | 25 - 10,000 kVA | 25 kV | Liquid-filled |
Who we buy from
Six kinds of seller
- Recyclers
- Electrical contractors
- Equipment dealers
- End users
- Demo contractors
- Distributors
Fast offers
A written offer the same business day, based on your photographs.
Dedicated logistics
Our own crew, trailer and crane, not a brokered haul.
No broker fees
One buyer from first call to cleared pad, with nothing skimmed.
How it works
Six steps from photograph to payment
- 01
Take pictures
Photograph the nameplate, the inside of the cabinet and the tank from both ends. Four frames on a phone are enough to price most units.
- 02
Send them to us
Email or text the photographs with the site address and whether the unit is still energised. We reply the same business day with questions or a number.
- 03
Review the offer
The offer names the unit, the site, the price and the pickup window. It is written, dated and good for thirty days unless the unit changes hands.
- 04
We schedule freight
A crew, a trailer and a crane if the pad needs one. You get the date and the arrival window, and the site does not have to close for it.
- 05
Testing on arrival
Winding resistance, insulation resistance and a turns ratio check, plus oil analysis where the unit is liquid-filled. Results travel with the unit.
- 06
Get paid
Payment is released against the signed bill of sale and the scale ticket, by check or ACH, with the paperwork copy left on site.
What we handle
The parts sellers dread
Rigging
Crane, skates and a route survey for anything that will not roll onto a trailer.
Oil containment
Pans, absorbent and a spill plan before a drain plug is touched.
Bill of sale
A document that clears a lien, a lease or a bankruptcy file, not a handwritten note.
PCB paperwork
Testing and manifesting for pre-1979 oil, handled before the unit moves.
On the ground
What it is
DOE efficiency standards establish minimum efficiencies for covered distribution transformers manufactured for the United States.
The federal definition generally includes units with input voltage of 34.5 kV or less, output voltage of 600 V or less, and operation at 60 Hz, subject to specific exclusions.
Covered equipment includes liquid-immersed, low-voltage dry-type, and medium-voltage dry-type distribution transformers within defined capacity ranges. A 13,200 V primary and 480Y/277 V secondary can fit that scope.
An autotransformer or certain special-purpose designs may not; classification requires more than reading the secondary voltage.
Local reality
Why it matters when you sell
An older transformer is not automatically disqualified from assessment because a newer efficiency standard exists. DOE rules principally address manufacture, not a blanket retirement deadline for installed equipment.
For a North Carolina plant removal, the manufacture date and service history should accompany the nameplate photographs.
Transformer Buyers NC buys used, surplus, failed, and obsolete transformers across North Carolina. Efficiency documentation helps distinguish a serviceable distribution unit from equipment needing further evaluation.
A missing test report, overheated winding, or leaking radiator introduces separate questions that a DOE compliance statement does not answer.
Around the site
The numbers
The preceding DOE efficiency levels apply to covered transformers manufactured on or after January 1, 2016. Amended levels require compliance for covered units manufactured on or after April 23, 2029.
Neither date, by itself, orders removal of a transformer already operating in a Raleigh facility.
Efficiency tables distinguish kVA rating, phase count, and construction; medium-voltage dry-type tables also distinguish basic impulse insulation level. Evaluation uses 50 percent loading for liquid-immersed and medium-voltage dry-type units, and 35 percent for low-voltage dry-type units.
These reference points are not prescribed operating loads.
Where it sits
Common mistakes
Do not treat a 2016 installation date as proof of compliance with the 2016 requirements. Manufacture and installation can be years apart, especially for surplus equipment.
Read the serial number and manufacture date, then seek the manufacturer's records rather than relying on a facility commissioning sheet.
Another mistake is confusing efficiency with condition. A compliant transformer can have a cracked bushing, wet insulation, or shorted turns. Conversely, an older unit can remain serviceable without meeting the newest manufacturing levels.
Keep electrical test results separate from efficiency records when preparing the removal file.
On the ground
How it affects value
Efficiency affects how an older transformer can be evaluated for potential reuse, but it is not a complete assessment. A documented loss profile is useful alongside voltage ratio, kVA, impedance, and condition.
Missing primary taps or an unusual secondary voltage can narrow potential applications independently of losses.
For failed equipment, an efficiency label does not reverse winding damage or tank contamination. The assessment shifts toward the core, winding material, recoverable components, and handling requirements.
Oil records and PCB documentation remain important for older liquid-filled units, regardless of their claimed DOE efficiency classification.
Local reality
What to do next
Start with clear photographs of the complete nameplate, terminal compartment, tank, and any damage. Include kVA, primary and secondary voltages, phase, serial number, and manufacture date.
For a Charlotte warehouse dry-type unit, photograph the enclosure label as well as the coil assembly if safely accessible.
Gather the factory loss report, recent electrical tests, oil analysis where applicable, and the removal schedule. Note whether the unit remains energized and whether a crane can reach the pad.
Qualified personnel should manage isolation; efficiency paperwork is not permission to open an energized terminal compartment.
Get started
Get an offer in minutes
Five fields is all it takes. Photographs help, but a nameplate and a town are enough to start.
No fee, no obligation. We reply the same business day.
Tell us what you have
We reply the same business day.
Questions
Straight answers
Equipment types
Must older transformers be removed under DOE rules?
The efficiency standards do not impose a general removal deadline on installed transformers. A unit manufactured before January 1, 2016, is not automatically barred from continued service by that date. Condition, application, and applicable safety requirements still need separate review.
Service area
Does a nameplate prove the transformer's efficiency?
A nameplate identifies rating and often manufacture date, but it may not establish measured efficiency. Request the manufacturer's compliance information and factory loss report for the serial number. No-load and load-loss data provide a stronger basis for review than an undocumented DOE claim.
Payment
Which loading point applies to dry-type transformers?
DOE evaluates low-voltage dry-type distribution transformer efficiency at 35 percent loading and medium-voltage dry-type efficiency at 50 percent loading. Confirm the equipment classification before comparing reports. Those test loading points do not mean a North Carolina facility must operate its transformer at those loads.
Logistics
How it affects value: what should a seller know?
Efficiency affects how an older transformer can be evaluated for potential reuse, but it is not a complete assessment. A documented loss profile is useful alongside voltage ratio, kVA, impedance, and condition.