Transformer Resources & Guides
Expert guidance on selecting, specifying, and procuring transformers. Whether you're new to transformer procurement or a seasoned engineer, our resources help you make informed decisions.
Buyer's Guides
FEOC Compliance for Transformer Buyers: What You Need to Know Before Your Next Purchase
The Foreign Entity of Concern rules are reshaping transformer procurement. If your project claims clean energy tax credits, your transformer supply chain is now under the microscope.
Read articleHow to Choose the Right Distribution Transformer (Without Getting Burned)
A complete buyer's guide to selecting distribution transformers. Learn about kVA sizing, voltage classes, cooling types—and why where it's made matters more than ever.
Read articleTransformers 101: Every Type Explained (So You Don't Sound Clueless on Your Next Call)
The complete guide to transformer types: padmount, pole-mount, substation, dry-type, autotransformers, and more. What they are, when to use them, and what they cost.
Read articleRFPs to 5 Suppliers vs. One Search Across 50: Why Smart Buyers Use a Marketplace
Sending RFPs to a handful of OEMs is how transformer procurement has always worked. But it's slow, limited, and leaves money on the table. Here's why a marketplace approach gets better results.
Read articleTechnical Resources
DOE Transformer Efficiency Standards: Compliance, Competition, and China
Complete guide to DOE transformer efficiency standards—and why these regulations matter more than ever for supply chain security.
Read articleTransformer Cooling Classes Explained: ONAN, ONAF, OFAF, and More
Understanding transformer cooling class designations. Learn what ONAN, ONAF, OFAF, and other cooling codes mean and how to select the right cooling for your application.
Read articleDOE 2027 Efficiency Mandates: The End of Cheap Foreign Transformers?
New DOE efficiency standards take effect in 2027. They'll raise costs, tighten supply, and potentially level the playing field between American and foreign manufacturers.
Read articleAmorphous Steel Cores: The Efficiency Secret Most Buyers Don't Know About
Amorphous metal cores slash no-load losses by 70-80% compared to conventional silicon steel. With DOE efficiency mandates tightening, they're about to become a lot more important.
Read articleSolid State Transformers: The Future of Power Distribution or Overhyped Tech?
Solid state transformers replace magnetic cores with power electronics. They promise smaller size, better control, and grid intelligence. But are they ready for prime time? Here's an honest assessment.
Read articleIndustry Insights
Transformer Lead Times Tracker: Real Numbers, Updated Monthly
The definitive source for current transformer lead times by type, size, and source. Updated monthly with data from manufacturers, brokers, and industry reports.
Read articleWhy Buying a Transformer Is So Damn Hard (And How to Make It Easier)
The transformer market is fragmented—hundreds of suppliers, no centralized inventory, weeks for quotes. Here's why procurement is painful and how smart buyers navigate it.
Read articleTransformer Lead Times in 2026: The Chickens Have Come Home to Roost
Current transformer lead times and the real reason they're so long. Spoiler: America's dependence on foreign manufacturing created this mess.
Read articleIs Your Transformer Really Made in America? How to Verify Before You Buy
FEOC compliance is critical for tax credits, but 'Made in USA' claims can be confusing. Assembly vs. manufacturing, component sourcing, corporate ownership—here's how to verify what you're actually getting.
Read articleBillions in Tax Credits for American Manufacturing—Are You Capturing Your Share?
The Big Beautiful Bill rewards projects using domestically manufactured transformers. The bonus is huge. The rules are strict. And most developers are leaving money on the table.
Read articleNeed Expert Advice?
Our engineering team is ready to help with your specific transformer questions. Get personalized guidance for your project.