The Critical Role of Power Transformers in the Rise of Electric Vehicles
Electric vehicles (EVs) are no longer a trend — they are the future of transportation. With rising environmental concerns, government incentives, and a shift toward energy efficiency, the EV market in the United States is growing at an unprecedented pace.
Behind every charging station, fleet electrification project, or public transit initiative lies a key component of the electrical infrastructure: THE TRANSFORMER. While often overlooked, transformers are the backbone that supports the entire EV charging ecosystem.
Why Are Transformers So Important for EV Infrastructure?
Whether it’s a public fast-charging station along a highway or a logistics hub electrifying its delivery fleet, EV chargers depend on stable, well-regulated power delivery. And transformers are essential in making that possible.
Their functions include:
- Stepping down high transmission voltages to the appropriate levels required by charging systems.
- Managing energy loads and peak demands, especially when multiple EVs charge simultaneously.
- Protecting the electrical system by ensuring consistent voltage levels and reducing losses.
Which Transformers Are Used in EV Charging Projects?
The most commonly used types for EV infrastructure are pad-mounted transformers and substation-style transformers. Their design is compact, robust, and ideal for both urban and industrial applications.
For example:
- A single 150 kW fast-charger may require a transformer rated at 225 kVA or more, depending on load factors and system design.
- Large commercial installations — such as EV bus depots or fleet facilities — may use transformers upwards of 500 kVA to 2,500 kVA, depending on their operational scale.
These transformers are often placed outdoors and must operate reliably under continuous load conditions.
Tailored for the EV Revolution
At our company, we specialize in custom-manufactured power transformers designed to meet the specific demands of modern EV charging infrastructure. Our products are built with:
- High energy efficiency (low-loss cores).
- Robust protection against overload and voltage fluctuations.
- Outdoor durability and compact footprint.
- Full compliance with ANSI, IEEE, and DOE efficiency standards.
We are already partnering with EV infrastructure developers, public utilities, and commercial fleet operators to deliver high-performance, future-ready transformer solutions.
Preparing for What’s Next
As the EV market continues to expand across the U.S., the need for reliable and scalable electrical infrastructure is critical. Whether you’re building a Level 3 DC fast-charging station, electrifying a delivery fleet, or developing a public transit charging network — your project needs the right transformer at its core.
Partner with a Manufacturer Who Understands the EV Challenge
With years of experience in custom transformer design and manufacturing, we help power the future of mobility — one charge at a time.
→ Contact us today to discuss how we can support your EV charging project with tailored transformer solutions that meet your performance, safety, and regulatory needs.
sales@unitedtrselectric.com 214-876 0184