Top 7 Transformers Manufacturers in California 2026
Last updated
FirmsLedger lists 7 transformers manufacturers headquartered in California. The largest clusters are in Anaheim (2) and Vernon (2), and the other 3 are in 3 more cities. Anaheim listings include Pacific Transformer and Power Plus.
By specialty, California has switchgear (23), electrical wire & cable (20), solar panels (19), wiring harness (7) and control panels (4) listings.
| Company | City | Specialty | Phone | Website |
|---|---|---|---|---|
| Allied Components International | Foothill Ranch | Custom magnetic component design | (949) 356-1780 | alliedcomponents.com |
| Electrical Design Technology / General Switchgear | Sacramento | Engineering design | (707) 578-4848 | edt-global.com |
| MGM Transformers (a Forgent company) | Vernon | Dry-type transformer manufacturing (VPI) | (256) 481-8985 | mgmtransformers.com |
| Pacific Transformer | Anaheim | Custom transformer design and manufacturing (1 VA – 1,000 kVA) | (800) 325-0501 | pactran.com |
| American Electric Components, Inc. | Vernon | Custom transformer design and manufacturing | — | aecinc1.com |
| Power Plus | Anaheim | Generator rental | (714) 685-8600 | powerplus.com |
| Delta Star, Inc. | San Carlos | Power transformer manufacturing | — | deltastar.com |
Allied Components International
Foothill Ranch, California
Allied Components International was founded in 1992 and is headquartered in Foothill Ranch, California. The company began as a designer and manufacturer of custom and standard transformers, later expanding into a broad range of magnetic components.
MGM Transformers (a Forgent company)
Vernon, California1,500 employees
MGM Transformers, based in Vernon, California, has been designing and building transformers since 1974. The company operates as a subsidiary of Forgent, a platform that brings together over 100 years of experience in power infrastructure.
Pacific Transformer
Anaheim, California
Pacific Transformer was founded in 1981 in Anaheim, California, by three softball teammates who each borrowed $1,300 from their parents to start building transformers in a garage. The company remains founder-owned and headquartered in Anaheim, where it operates a domestic production facility alongside international operations in Mexico, Thailand, and China.
Power Plus
Anaheim, California500-999 employees
Power Plus is headquartered in Anaheim, California, and was founded in 1987 by Steve Bray. Bray, a former electrician working on Southern California construction sites, recognized that contractors needed more than equipment—they needed reliable problem-solvers.
Frequently asked questions
Which certifications do transformers manufacturers in California list?
ANSI: MGM Transformers (a Forgent company) and American Electric Components.