Verified Nov 2026
Electronics & Software
·
Tallmadge, Ohio
·
Since 1965
SDMyers provides maintenance, testing, and diagnostics for electrical transformers and substations. Headquartered in Tallmadge, Ohio, and founded in 1965, the company operates with 200–500 employees and estimated revenue of $50–100 million. It serves automotive, electronics, renewable energy, and industrial sectors across the United States and internationally. SDMyers has serviced over 500,000 transformers and operates a transformer oil testing laboratory.
SDMyers at a glance
Revenue
$50-100M
Est. band
Employees
200-500
Founded
1965
Headquarters
Tallmadge, Ohio
Industries
Automotive
Electronics
Plumbing & Hardware
Renewable Energy
Industrial Equipment
Overview
SDMyers provides maintenance, testing, and diagnostics for electrical transformers and substations. Headquartered in Tallmadge, Ohio, and founded in 1965, the company operates with 200–500 employees and estimated revenue of $50–100 million. It serves automotive, electronics, renewable energy, and industrial sectors across the United States and internationally. SDMyers has serviced over 500,000 transformers and operates a transformer oil testing laboratory.
At a glance
Attribute | Detail |
|---|---|
Founded | 1965 |
Headquarters | Tallmadge, Ohio |
Employees | 200-500 |
Revenue | $50-100M (estimated) |
Primary capability | Electronics & Software |
What SDMyers makes
The company offers condition monitoring, oil reclamation, dielectric fluid testing, load tap changer maintenance, online monitoring equipment, and consulting services for transformer asset management.
Latest developments
2026-09-14 — SDMyers is proud to serve as a NETA Corporate Alliance Partner, advancing the standards, safety, and technical excellence that keep the electrical industry reliable. Looking forward to the future of our collaboration! | SDMyers (linkedin.com)
2026-09-09 — 🤝 Welcoming SDMyers as a NETA Corporate Alliance Partner! | NETA - InterNational Electrical Testing Association (linkedin.com)
2026-06-17 — Electrical Safety Starts With Reliability | Jon Bucciarelli, SDMyers - Power Systems Technology (powersystems.technology)
2026-06-13 — SDMyers is headed to Reliable Plant 2026! | SDMyers (linkedin.com)
2026-02-14 — We, at SDMyers, are excited to join Maddox in this endeavor and will provide a 2 yr inspection and sampling maintenance package for this pad mount. Great idea, Maddox! Can’t wait to … | SDMyers (linkedin.com)
2025-10-30 — SDMyers | Transformer Maintenance and Testing Company of the Year 2025 (utilitiesbusinessreview.com)
Company details
SDMyers is privately held with an additional office in West Sacramento, California, serving businesses, municipalities, and industrial plants across multiple industries. SDMyers was founded in 1965, has an estimated 200-500 employees, and is headquartered in Tallmadge, Ohio.
Frequently asked questions
What does SDMyers make?
SDMyers provides maintenance, testing, and diagnostics for electrical transformers and substations. Headquartered in Tallmadge, Ohio, and founded in 1965, the company operates with 200–500 employees and estimated revenue of $50–100 million. It serves automotive, electronics, renewable energy, and industrial sectors across the United States and internationally. SDMyers has serviced over 500,000 transformers and operates a transformer oil testing laboratory.
Where is SDMyers headquartered?
SDMyers is headquartered in Tallmadge, Ohio (180 South Ave, Tallmadge, Ohio, 44278).
When was SDMyers founded?
SDMyers was founded in 1965.
How big is SDMyers?
SDMyers has an estimated 200-500 employees, with revenue in the $50-100M range (estimated).
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Last verified Nov 2026. Is this your company? Request a correction.
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